2010 Lexus RX 450h FWD 4dr Hybrid

Introduction

As vehicles become more complex, driving becomes more like operating a computer. Yet the new 2010 Lexus RX 350 and RX 450h seems uncommonly easy to operate. And they are brimming with new technology. If the RX were a computer, and in more ways than ever, it is, it would have a plug-and-play operating system and an inviting, engaging user interface.

When driven back-to-back against the previous model, it's clear the new 2010 RX offers more than cosmetic improvements. Mechanical improvements for the all-new Lexus RX include an independent rear suspension, a 10-airbag safety system, a six-speed sequential transmission, and an improved all-wheel-drive system. Upgraded accommodations include better seats, integrated satellite radio, acoustic glass, automatic high beam control, and a heads-up display among other things. Many of the improvements are due to more and better computer logic for integrated control of driving systems such as the transmission, all-wheel-drive, navigation, steering and brakes. Perhaps the key interior upgrade is the introduction of a mouse-like controller which Lexus calls Remote touch. It's used instead of a touch screen to operate climate, audio and the navigation system.

Compared to competing SUVs, such as the current Acura MDX, Mercedes ML 350 and BMW X5 3.0, the RX 350 gets better mileage and cleaner emissions ratings. The RX 450h hybrid gets better mileage yet, and is among the cleanest vehicles yet devised by man.

The RX 350 and RX 450h are offered with front-wheel drive or all-wheel drive. The all-wheel-drive system is completely new, lighter and more efficient. It works electronically without the locking center differential in previous models.

The RX 350 comes with a 3.5-liter V6 mated to a six-speed automatic multi-mode transmission. Compared to the current model, the RX 350 is a little heavier due to stouter rear suspension components, which provide upgraded crash performance.

Walkaround

Edging away from the current RX look, the 2010 RX 350 has a wider stance, with more pronounced front fenders and crisper lines overall. As in the previous generation, the grille is placed lower than the headlights, so the Lexus family resemblance carries on, but the headlights are more sharply defined and the roofline is flatter. In essence, the rounded egg-shaped body has been redefined at the corners to retain fluid RX cues in an updated format.

In the process, the new RX got slipperier, with a coefficient of drag of 0.33, down from 0.35.

The RX has a new keyless entry system that has a better-integrated sensor on the front doors. It looks sleeker, and the door handles themselves have been redesigned for a more comfortable grip. Fog lamps are integrated into the front bumper, and the outside mirrors are heated.

The RX 450h is distinguished by a different, more finely slotted grille and front bumper treatment, and by energy-saving LED headlights that are exclusive to the hybrid. Both the RX 350 and RX 450h have LED brake lights and turn signals, but the hybrid has auto-dimming outside mirrors. The 450h also has blue emblems and logos, and is available in an exclusive White Pearl color.

The RX comes with 18-inch, five-spoke aluminum wheels with 235/60R18 tires; 19-inch wheels are available as part of the Sport Package or as a stand-alone option.

Driving Impression

Over the period of two days in Sonoma, California, we had the opportunity to switch in and out of standard a RX 350, both with front-wheel drive and all-wheel drive, plus an RX 450h hybrid, and a brief drive in the current RX 330. We spent most of our time in a Matador Red RX 350 AWD with the Navigation package.

Out on the road, the big V6 in the RX 350 responds well to throttle. Part of that is the new six-speed transmission, which has a lower first-gear ratio than the old five-speed, so it gets the RX quickly up to speed for merging or highway entry. Lexus told us to expect 0-60 times in the neighborhood of 7.4 seconds, and a quarter mile time of 15.8, and that's about the way it felt. We didn't go there, but top speed is electronically limited to 112 mph.

The transmission quickly selects gears based on throttle input, so you can ask for a gentle downshift just by giving it a little more gas. If you floor the accelerator, it kicks down two gears and moves out. It's also possible to select your own gears in multi-mode shifting, but the automatic's logic seemed so intuitive that we would probably drive in Auto 95 percent of the time, using the manual mode for downhill control on the highway or long uphill when heavily loaded. There is no V8 option for the RX, but if there were, we'd wager that performance would not be much improved, and mileage would suffer.

We did not feel much torque steer in the front-wheel-drive models, and particularly, the hybrid. Full-throttle starts in the previous hybrid elicited a waggle as various components of the powertrain kicked in that we found disconcerting. First, you'd feel the engine, then two electric motors, one after the other. These steering affectations are far better tamed in the new RX 450h. Our assumption is that the transmission's computer is managing torque more progressively, and the flywheel is more heavily damped.

The RX 350 is not built for road racing, but more for passenger comfort. The new rear suspension, a double-wishbone independent, has a lot to do with that. Still, it has a nice, clean turn-in and good lateral grip for an SUV. The new RX is just a little longer than the old model, and stands 2.6 inches wider, so there is a noticeable gain in agility.

We expect Lexus vehicles to be exceptionally quiet, and the new RX is no exception. That said, the 19-inch wheels on the Sport Package do allow for more road input, and a little more noise and vibration seep through. The suspension is tuned slightly differently with the Sport Package, but the end result is still not as aggressive as Porsche's Cayenne or the BMW X5. To us, that's fine. We think SUVs are better at grocery-getting than corner-carving anyway. Bigger wheels, thinner tires and tighter damping tend to compromise Lexus ride quality and noise control, without delivering all that much gain. So our preference is for the 18-inch wheels.

Regardless of the tire choice, we found it easy to maintain a conversation using a low tone of voice at normal speeds. Lexus pioneered the science of quietness in a car, with the result that almost all cars are significantly quieter than they were five years ago. New tricks, such as optimized wheelwell damping coatings and fender liners, have been incorporated into the new RX. The underbody of the car has also received attention against wind noise. And the addition of a sixth gear in the transmission has allowed for quieter cruising, with less engine noise, on the highway.

All those things also hold true for the RX 450h, but because it is a hybrid, it regularly operates with the engine off altogether. During those times, noise reduction is even greater, bordering on eerie.

The brakes feel strong and progressive, with just a little squish at the top of the pedal before stronger grip kicks in. The hybrid brakes, which are regenerative, are now much more smoothly modulated than early hybrid brakes. The transition between light braking, when the generator reclaims power, and the serious stopping power that comes on when more pedal is applied, can still be felt, but you have to look for it.

Steering effort is light, but seems better proportioned than past electric steer-by-wire systems we've tested. It's more accurate than before, especially at the center. The new power-assist logic is based on vehicle speed. The slower you go, the less effort required, so it can be just as appropriate in the parking lot as in the fast lane on the way to Las Vegas. Lexus uses the electric steering system on a number of its vehicles, because it reduces drag on the motor and thus, improves fuel economy. It's also more compact, so there are packaging advantages, and once you have a computer controlling steering, you can add VDIM.

VDIM is not a system easily tested in normal driving, because it requires driving out of control, and then recovering. At which point, nothing will have happened, except maybe a brief flash of an icon on the dash. But it's a system that looks at steering, braking, throttle and motion sensors in the cabin to predict what will actually happen, compared to what the driver is asking for. If there is any difference between the two, the system intervenes and selectively brakes individual wheels to correct the path of the car. It happens so fast you might not notice.

We've tested VDIM on race tracks and lonely dirt roads. It works without slowing down the car much, unlike VSC, which is the standard traction/stability control system. It's an expensive option, but one we wish was on every car.

The RX is an easy SUV to see out of, and fairly easy to keep track of the area around the vehicle when backing up or parking. Driver visibility is enhanced by small windows in the A-pillar, and by small TV cameras that track the rear and passenger-side of the RX. One camera is located in the right side mirror, the other in the rear bumper. We found we could toggle between the two views, front and side, to see how close we were to the curb or pedestrians.

We found the RX to be a relaxed and comfortable ride, so we spent time trying out some of the new electronics systems.

We actuated the heads up display and found it makes it easy to stick to speed limits in unfamiliar ground. Bright white, high-contrast figures were easy to read, even heading into sunlight. It's the best we've seen so far. It's possible to project the display anywhere on the windshield; we liked it best low and to the left.

Voice recognition, something we've never really trusted, still takes a little getting used to, but the new system is much closer to something we might use every day. We began by asking it to switch to channel 143 on XM, which it had no problem doing. It also seemed to quickly be able to supply the nearest gas stations, although not the cheapest prices, and turn down the air conditioning. However, when we asked it to play Grateful Dead, it did not find the channel on its own, so evidently there are limits to Hal's intelligence.

The RX 450h is offered in front-wheel drive or all-wheel drive, but the all-wheel-drive system is different; it incorporates a separate rear electric motor to power the rear wheels. Because it is a hybrid, the transmission is a continuously variable automatic and the brakes are different due to the need to regenerate electricity. And there are a few packaging and styling differences to consider when making a decision between the two. Because of the addition of electric motors, the RX 450h has 20 more horsepower than the RX 350, which compensate for a weight penalty of about 300 pounds.

From a purely economic point of view, the hybrid becomes attractive if you believe the cost of fuel will again rise sharply. The hybrid RX gets about 7 mpg better fuel economy, so it goes 134 miles farther on a tank of gas. That translates into a savings of $12.80 per tank if gas stays at $2 per gallon, or $25 per fill-up if gas goes back up to $4 per gallon. If the premium for the hybrid system is $4000, you would have to drive 83,700 miles before the cost is amortized. Over 100,000 miles, you would burn almost 1200 gallons less gas, but save only $786.

In short, dollar savings would be modest, even if prices rise. For that reason, most current hybrid buyers chose the vehicle because they want to drive the most fuel-efficient, cleanest SUV possible, one that reduces dependency on imported oil. The new RX450h takes that reasoning further, delivering up to 12 percent better fuel economy and 27 more system horsepower than the current-generation RX 400h hybrid. Total emissions are approximately the same as the current RX400h, even though the 450h has a bigger engine and more power. Which is to say extremely low.

The RX 450h we drove averaged 23.4 mpg over 120 miles of mostly around-town driving.

The hybrid brake system uses the same ventilated four-wheel discs in the RX 350, but has an electronically controlled regenerative brake feature that charges the batteries when the brakes are applied gently. The hybrid system includes ABS, Electronic Brake-force Distribution (EBD), Brake Assist and more important, Vehicle Dynamics Integrated Management system (VDIM) as standard equipment. We've tested VDIM on controlled proving-grounds settings, and consider it a remarkable safety system. It's also available on the RX 350 as an option.

The hybrid can drive in three modes: Normal, Eco for best mileage, and EV Mode which allows the vehicle to operate on battery only. Lexus tech sources estimate the EV-only mode operating distance at about a mile. The EV feature is aimed at allowing the RX to be used as an electric car in closed urban areas where internal combustion engines are banned altogether, such as in Europe.

Interior

It's strangely exciting to sit in the cockpit of the new Lexus RX 350 and RX 450h. There is a sensation of having so much to do, just like configuring a new computer. There are seating adjustments to lock in, preferences for the Remote Touch controller, operating modes to select and dashboard combinations to try out. We have a feeling an RX owner would be surprised to discover new features after months of ownership.

The RX comes to life with the push of a button. The instruments are bright and engaging, and shaded from outside light. The seats now have slightly higher side bolsters for support during cornering, but they're still easy to get into. They feel firm at first, but medium-soft once you settle in, and are easily adjusted to a variety of positions. Mood lighting in the footwells and cabin supports a sense of quality and well-being.

The new cockpit provides a step up in sophistication, conveyed in part by a gifted design scheme that includes no straight lines or sharp corners. Every element of the interior is curved, arched or rounded in some way, so lines blend with subtle grace and harmony. California Walnut wood trim accents are mixed with three different interior color combinations, complementing black, light gray, and parchment tones.

The cockpit is divided into two separate zones. The first is for information functions, located higher up where they are easy to see. The second is for control functions, located lower and within easy reach of both front seat occupants. This division is made possible by Remote Touch.

The Remote Touch system is essentially a computer mouse. It's located exactly where your hand would fall if your elbow were resting on the center console. This mouse will be immediately familiar to anyone who has used a computer. It replaces the need to reach out and touch the screen to use the Navigation system, or adjust audio or climate settings. We found it was simple to use while driving. It allowed us to avoid focusing on the navi screen to tune the climate control or turn down the volume. Plus, no more fingerprints on the screen.

The center console is bridge-like with open storage under the center. The shifter is immediately above the Remote Touch mouse.

There are a number of redundant hard buttons on the steering wheel, and at various points on the dash, 52 in all, but the Remote Touch mouse really does reduce the need to use them. Like a computer mouse, Remote Touch can be adjusted for sensitivity to your preference.

The navigation system is a sixth-generation version, with casual speech voice recognition capability for hands-free operation of audio, climate, and Bluetooth. The system runs from a hard disc, not a DVD, so it's faster and allegedly smarter than the previous system. Among the improvements are easier phonebook transfer, voice command access to the phonebook, and smart auto-fill when selecting destinations.

XM satellite capability is built in, and the first three months are free when you buy the RX. Three services are available: real-time traffic, advance weather forecasts and XM Satellite Radio. It costs $23.99 a month to subscribe to all three services after the trial period.

The standard audio system has 9 speakers, a 6-disc CD changer and can play MP3 and WMA files from your iPod. A 12-speaker system comes with the navigation system, and a 15-speaker Mark Levinson Surround Sound system is available for those who require an audio system consistent with the very best home systems.

The front seats now have longer cushions, with higher backrests, and are fitted with active headrests as standard equipment. The headrests are designed to adjust upward in the event of a rear-end collision, reducing whiplash. Because of the active headrests, rear-seat entertainment screens are independently mounted in pods behind the headrests. The two seven-inch LCD screens can operate separately so one passenger can play a game while another passenger watches a DVD. The seats are covered in fabric in standard trim, with leather and semi-aniline leather offered as available options.

One of our test units had seats covered in the consistently flawless semi-aniline leather, and we were hard pressed to find a misplaced stitch or shadow of stain anywhere. In fact, the leather is so supple and uniformly perfect we first thought it must be synthetic material. Regardless of the covering, both front seats are 10-way adjustable, with memory, and heated/air conditioned seats are available.

The rear seat can accommodate five and has a 40/20/40 fold-down split. The new design makes it easier to release one or both seats from the back, without having to walk around to the side, when loading cargo.

The rear seats also have a fold-down center console with a covered wood grain cupholder and separate covered storage compartment. The rear seats are shorter, with less reclinability than the front seats, but with good legroom for average-size adults like ourselves, much better than a seat on a 757 these days. There are four grab handles, one for each door. There are two rear air conditioning vents to cool the rear compartment.

Cargo room behind the rear seats has been slightly increased to 40 cubic feet, enough for four average golf bags.

When it comes to the interior, the hybrid 450h is essentially the same as the 350, except that the 450h has an Eco driving indicator that displays fuel economy using a bar graph. A hybrid system indicator replaces the tachometer to provide driving feedback.

Lineup

The 2010 Lexus RX 350 comes with front-wheel drive ($37,625) or all-wheel drive ($39,025). The RX 450h ($42,685) and RX 450h AWD ($44,275) are similarly equipped. The Lexus RX models comes standard with fabric upholstery, automatic dual-zone climate control, AM/FM/6CD with nine speakers and a luxury level of standard equipment.

The optional Luxury Package ($4,900) includes semi-aniline leather trim interior; one-touch-open/close Moonroof; Power Retractable Electrochromic Outside Mirrors; Wood and Lather Steering Wheel and Shift Knob; Wide Angle Side-View Monitor, 19-inch Alloy wheels with Mud and Snow Tires; MP3 MiniPlug with USB Audio Plug; Power Rear Door; Illuminated Scuff Plate and Headlamp Cleaner. Comfort Package ($2,000) includes bi-xenon high intensity discharge (HID) projector headlamps; adaptive front lighting system; automatic high beams; rain-sensing automatic wipers.

Dual-Screen Rear Seat Entertainment with Navigation ($5,615) includes DVD rear-seat entertainment system with wireless headphones, audio/video inputs, 120V AC power outlet and navigation system with voice command, backup monitor, XM Nav Traffic and Nav Weather with 90-day trial subscription and Remote Touch controller.

Options include Heads Up Display ($1,200), Heated/Ventilated Front Seats ($640); 19-inch Aluminum Alloy Wheels with Mud and Snow Tires ($660); and Bi-Xenon High Intensity discharge Headlamps with AFS and Automatic High Beams ($875). Mark Levinson Audio ($1,610) and Intuitive Parking Assist ($500) are available as stand-alone options. Navigation System ($2,465) includes Hard Disc Drive Navigation System with voice command; Backup Monitor; XM Nav Traffic and Nav Weather with 90-day trial subscription; Remote Touch controller. Sports Package ($1,300) includes 19-inch Sport finish alloy wheels with mud and snow tires, sport-tuned suspension, Vehicle Dynamic Management (VDIM).

Safety equipment includes front airbags; front-seat mounted side airbags; roll-sensing front and rear side-curtain air bags; driver and front passenger knee airbags and side airbags; active headrests for front seats; force-limiting seatbelt pre-tensioners for driver and front passenger seats; three-point seatbelts with pre-tensioners for all rear seating positions (3); direct-type tire pressure monitoring system; four-sensor, four-channel anti-lock brake system (ABS) with Brake Assist; enhanced VSC (Vehicle Stability Control). Optional safety features include Pre-collision System and Dynamic Radar Cruise Control ($1500); Vehicle Dynamics Integrated Management (VDIM) come with Sports Package.

Assembled In: Kyushu, Japan and Ontario, Canada.

Options As Tested: Luxury Package ($4,900); Mark Levinson Audio ($1,610); Navigation System ($2,465); Sports Package ($1,300); Towing Prep Package ($238).

Model Tested: Lexus RX 350 AWD ($39,025).

Model Lineup: Lexus RX 350 FWD ($37,625); RX 350 AWD ($39,025); RX 450h ($42,685); RX 450h AWD ($44,275).

Summary

This third-generation Lexus RX has been updated in dozens of ways to make it more efficient, more comfortable, and broadly more advanced than the previous generation. It's quieter, safer, and more driver-friendly. And in our opinion, better looking as well. If you like the current RX 330, you'll love the Lexus RX 350. It's a good choice for people who don't tow much or need to move more than five at time. The RX 450h offers a clear step forward in hybrid technology.

John Stewart filed this report to NewCarTestDrive.com from Sonoma, California.

Car Connection Review

Car Review: TheCarConnection.com
2010 LEXUS RX STYLING | [8 out of 10]
Edmunds: "Cabin feels just like the RX 350's and offers all the same amenities"

ConsumerGuide: "Navigation screen is placed conveniently high in dashboard and deeply inset"

Motor Trend: "Appears conspicuously similar to the 2009 model"

If you've seen the less expensive RX 350--or even previous model-year RX models--you've essentially spotted the pricier 2010 Lexus RX 450h hybrid model. That's the case according to most reviews read by TheCarConnection.com. Even though the Lexus RX crossover utility vehicles have been redesigned, they bear a striking resemblance to previous RX Lexus models and could easily be mistaken for them from the outside.

The exterior styling of the Lexus RX 450h is familiar for a reason--it works, and Lexus doesn't want to mess with the unbridled success of the RX lineup. Motor Trend is quick to point out that "it's unlikely the neighbors will be able to detect that the 2010 RX is all-new," although they mention that the Lexus RX 450h features a "unique front grille and bumper and blue-tinted badges." Kelley Blue Book says the 2010 Lexus RX 450h is "slightly larger inside and out," while Cars.com adds that the Lexus RX 450h "is the latest Lexus to receive the brand's 'L-finesse' styling language." The key aspects of the new styling, according to Cars.com, are "sharp, angular design elements, such as the headlights." Road & Track picks up the new elements, remarking that "the new body has a much more muscular look," but for the most part it's the same RX you know and love.

The interior of the 2010 Lexus RX 450h is another story, however, and it features a significant styling makeover. Road & Track calls the new look the "'dual-zone' cockpit design," which features "a display zone centered around the dash-mounted 8-in. navigation display, while the operation zone, closer to the driver, includes a remote touch-navigation controller and steering wheel-mounted multi-information switch." Automobile Magazine likes what Lexus has done inside, noting that the interior "now sports more angular faces than the Sydney Opera House" and claims "it's interesting to look at [and] even more intriguing to use."

Cars.com reports that other changes include "solid or two-tone color schemes" and "sweeping lines" across the dashboard. Another major change, according to Edmunds, is the "mouse-operated, hard-drive-based Remote Touch navigation system [that]...attracts a Gizmodo crowd that revels in technology for technology's sake."

Conclusion: The interior of the 2010 Lexus RX 450h wins praise for its user-friendly layout, while the refreshed exterior maintains a conservative appeal.



2010 LEXUS RX PERFORMANCE | [7 out of 10]

Kelley Blue Book: "An even more engaging driving experience than the RX 400h original"

Edmunds: "The blending of the power sources is a bit smoother and quieter"

ConsumerGuide: "Impressive thrust and outstanding passing punch"

The 2010 Lexus RX 450h shines in city driving, where it can make the most of its hybrid powertrain, but loses some of its fuel economy advantage on the highway.

The latest hybrid in the RX Lexus lineup, the Lexus RX 450h, is powered by a potent combination of gasoline and electric engines. Kelley Blue Book reviewers state that the Lexus RX 450h uses "a new 3.5-liter V-6 that employs mileage-making Atkinson Cycle valve timing [and] is teamed with the latest take on the Hybrid Synergy System." Motor Trend reports that the Lexus "RX 450h's hybrid system makes 27 hp more than that of [the] previous 400h," while also noting that "FWD hybrids utilize a 167-horsepower electric motor while AWD versions supplement that with a 68-horse electric motor that drives the rear wheels. Either way, combined system power is rated at 295 horses."

The combination proves more than adequate, as ConsumerGuide finds that the 2010 Lexus "RX 450h has impressive thrust and outstanding passing punch." According to their best estimates, Edmunds feels that the 2010 Lexus RX 450h should run at about "7.2 seconds from a standstill to 60 mph."

Along with a unique engine, the 2010 Lexus RX 450h differs from the RX 350 in the transmission utilized. While the conventional RX Lexus comes with a six-speed automatic, Edmunds says that the Lexus RX 450h features a "planetary continuously variable transmission (CVT)." These types of transmissions usually don't score very well with reviewers, but TheCarConnection.com's research reveals a surprising amount of praise for this latest version of CVT. Edmunds points out that "the transmission incorporates hill logic this year, and there are several specialized driving modes, our favorite being the six-speed mode with manual shifting," although the gear changes are simulated. ConsumerGuide adds that the "CVT transmission is responsive," while the "well-integrated hybrid/electric powertrain exhibits very little of the surging and bogging typical of hybrid vehicles." Both front- and all-wheel-drive versions of the 2010 Lexus RX 450h are available.

Despite a significant power boost over the previous Lexus RX 400h, the 2010 Lexus RX 450h still manages to provide an improvement in fuel economy. According to the official EPA estimates, the 2010 Lexus RX 450h should return 28 mpg city, 27 mpg highway in FWD models, while the AWD only drops to 26 mpg on the highway.

The RX Lexus lineup hasn't been known for sharp handling, but it can usually be counted on for a comfortable ride. The same holds true in the latest Lexus RX 450h, where a bump in overall weight has hurt handling, but a revised suspension keeps occupants riding in comfort. Motor Trend is impressed to find that "the electric power steering has been retuned and delivers commendable feedback and linearity," and Edmunds notes that it "stops and steers better, but still [is] not nimble." One sore point for many hybrids is brake pedal feel, but even here ConsumerGuide says the "brakes are strong, with a smooth, progressive pedal feel."

Conclusion: The 2010 Lexus RX 450h proves you can have your cake and eat it too, offering both an increase in power and fuel economy.



2010 LEXUS RX COMFORT AND QUALITY | [9 out of 10]

Kelley Blue Book: "More space for five people and their cargo"

ConsumerGuide: "Luxurious, high-grade cabin materials, with many soft-touch surfaces"

Motor Trend: "Jumps in legroom (0.6 inch front, 0.2 inch rear) and shoulder room (0.5 inch)"

The 2010 Lexus RX 450h boasts a larger cargo space than previous RX Lexus models, as well as all-day comfortable seats. Unfortunately, seating for five is the only option, as Lexus continues to resist the trend to add a third row to its mid-size SUV offering.

ConsumerGuide reviewers contend that "this premium midsize crossover SUV seats five" in a very comfortable arrangement, with front seats that are "shaped and padded for long-haul comfort, with an excellent blend of cushioning and support." Other reviews read by TheCarConnection.com echo that sentiment, with Cars.com noting that "the optional leather seats are power-adjustable up front." Motor Trend reviewers appreciate the extra space on the new 2010 Lexus RX 450h, measuring "jumps in legroom (0.6 inch front, 0.2 inch rear) and rear shoulder room (0.5 inch)" that are attributable to the increased exterior dimensions of the Lexus RX 450h.

The rear seats also score well, as ConsumerGuide mentions that the back bench of the Lexus RX 450h offers "ample headroom and foot space for adults sitting outboard." The rear seats are also customizable--Cars.com says that "the backseat folds in a 40/20/40 split; like before, it reclines and adjusts forward and backward."

Interior storage space wasn't all that bad on the previous version of the RX Lexus lineup, but a few design changes for the 2010 Lexus RX 450h result in even more capacity. Cars.com reports that "the RX's cargo area measures 40 cubic feet," which means there is "more space than a Lincoln MKX (32.3 cubic feet)." Kelley Blue Book compares it favorably with previous versions of the RX Lexus, declaring that the latest Lexus RX 450h has "more space for five people and their cargo." In terms of hard numbers, Motor Trend says that the 2010 Lexus RX 450h has "an additional 1.7 cubic feet of cargo space, thanks to an all-new rear control-arm suspension." In the passenger area, ConsumerGuide remarks that "interior small-items storage is a bit below average for an SUV."

Both build and materials quality are excellent in the 2010 Lexus RX 450h. Cars.com states that "leather upholstery is optional (cloth seats are standard)," but otherwise this Lexus RX 450h comes standard with premium materials. ConsumerGuide notes that "RX models feature luxurious, high-grade cabin materials, with many soft-touch surfaces and comfortable padding" throughout. One of the new material touches, according to Motor Trend, is the use of an "OLED (organic LED) multi-information display, which is thinner and more efficient than LCD." Cars.com also comments that the Lexus RX 450h "makes wide use of soft-touch materials," which lend an air of luxury and quality to the cabin.

Occupants will feel comfortable, even when the road is less than smooth. ConsumerGuide raves that, on the Lexus RX 450h, "the ride is absorbent yet composed and controlled--nearly on par with a premium sedan." Edmunds does, however, reports that on straight roads the "RX 450h settles in and delivers a relaxed, serene ride that we simply can't fault."

Unlike its corporate sibling, the Lexus RX 350, the 2010 Lexus RX 450h doesn't have any significant cabin noise issues. Much to the contrary, ConsumerGuide says that "overall noise levels are pleasantly low," although "there is a noticeable wind whistle at highway speeds."

Conclusion: The 2010 Lexus RX 450h goes a long way toward justifying its price tag on the basis of its high quality and comfort levels.



2010 LEXUS RX SAFETY | [9 out of 10]

Edmunds: "Structural reinforcements to improve crashworthiness"

ConsumerGuide: "Visibility to the rear corners is slightly impeded by the roof pillars"

Cars.com: "Standard safety features include all-disc antilock brakes, side-impact airbags"

The 2010 Lexus RX 450h hasn't yet completed the full round of crash tests, but that alone isn't enough to keep this perennial safety standout from earning high marks in the safety category. The 2010 Lexus RX 450h is packed with active and passive safety features, as well as a few nifty visibility-enhancing devices that will prove invaluable.

As of this writing, no U.S. crash tests have yet been conducted on the 2010 Lexus RX 450h, but previous versions of the RX Lexus lineup have fared quite well. There's little reason to believe that the story will be any different for the Lexus RX 450h, especially considering that Edmunds reports "structural reinforcements to improve crashworthiness."

In terms of safety features, there's little more you could ask for than what comes on the 2010 Lexus RX 450h. Cars.com reports that "standard safety features include all-disc antilock brakes, side-impact airbags for the front and outboard rear seats, front and rear side curtain airbags, knee airbags for front-seat occupants, an electronic stability system and active head restraints." ConsumerGuide adds that "Lexus' Pre-Collision System, which is designed to tighten the seatbelts and ready full braking power when sensors detect an imminent collision," is also available on the Lexus RX 450h, while "Hill-start assist is a new standard feature." One other noteworthy safety feature, according to reviewers at Motor Trend, is the new set of headlamps "that automatically switch from high to low beams when a camera in the rearview mirror detects lights from vehicles ahead."

Speaking of cameras, reviews read by TheCarConnection.com show that the RX Lexus lineup offers a few to help with driver visibility. Along with the usual backup camera, which Cars.com says is "included with the navigation system option," Cars.com states that the Lexus RX 450h is available with a "wide-view side monitoring system. Featuring a wide-angle camera mounted under the right mirror, the system can show an image on the navigation screen of the ground around the right side of the RX, to make parking easier."

Conclusion: Few vehicles on the road offer the combination of driver-awareness features and active-safety measures found on the 2010 Lexus RX 450h.



2010 LEXUS RX FEATURES | [9 out of 10]

Kelley Blue Book: "A host of new features"

Edmunds: "Slick technology like the mouse-operated, hard-drive-based Remote Touch navigation system"

Cars.com: "Head-up display and a dual-screen backseat entertainment system are also optional"

The 2010 Lexus RX 450h packs on high-tech features without unduly complicating the driving experience.

The features on the 2010 Lexus RX 450h draw lots of attention in reviews read by TheCarConnection.com, which is understandable when you consider that Motor Trend claims the RX Lexus lineup is "crammed with about as much tech as the International Space Station." ConsumerGuide notes the availability of some "welcome high-tech features," including "a hard drive for storing digital music files."

The most interesting new feature on the Lexus RX 450h is the Remote Touch interface--Edmunds reports that this new mouse-operated system "feels instantly natural" for those accustomed to working on computers, and "eventually users perceive it to be just as easy to use as a touchscreen." Motor Trend, meanwhile, states that the Lexus RX 450h includes "intuitive park assist, Smart Key access system, XM NavTraffic and Weather, heads-up display...and standard Bluetooth."

The 2010 Lexus RX 450h can be equipped with much more technology than just what is offered in the base version, though that may prove to be enough for most people. For those interested in additional features, ConsumerGuide reports that "an available side-view monitoring system uses TV cameras to show a wide-angle passenger-side view of the vehicle on the navigation screen," while additional features for the Lexus RX 450h include "dual-screen DVD entertainment [and] adaptive cruise control." Audiophiles will be delighted to learn that Motor Trend reviewers list a "15-speaker Mark Levinson audio" system as one of the available upgrades for the RX Lexus lineup.

Conclusion: The 2010 Lexus RX 450h borrows a lot from Silicon Valley, but easily keeps it all in check.


The 2010 Lexus RX 450h Expert Review was originally published at TheCarConnection.com

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