The Lexus RX 400h falls into the midsize luxury SUV category. Launched in 2004, additional cosmetic options and the ability to switch off the stability and traction control systems are the only changes for 2008 over last year's model.
The RX 400h underscores Toyota's prowess as a pioneer in hybrid automotive power systems. Its hybrid powertrain - two powerful electric motors on the all-wheel-drive version and 30 battery modules - adds less than 300 pounds. The Toyota system configures electric motors assisted by a gas engine. Other hybrid systems usually focus on a gas engine with electric-motor assistance. As a full-hybrid system, the RX 400h can operate in gas or electric mode or combine both.
The front-wheel-drive RX 400h has a single electric motor in front, while the all-wheel-drive model has one up front and one in back to power the rear wheels, as the front and rear axles don't have a connecting driveshaft. Driving the RX 400h is an unusual aural experience. Turn the key and you'll hear silence. Reviewers found it a bit strange moving the gear lever into Drive without any engine sound. Gliding through parking lots and through the city, drivers will need to look out for pedestrians, who will not hear you coming. The EPA estimates reflect this driving experience, with a 28/25 mpg city/highway rating; most of the time - up to 40 mph - you'll run off the 30 battery modules packed under the rear seats in the city.
When an extra surge of power becomes necessary, step on the gas and the aluminum 3.3-liter V6 kicks in quickly and seamlessly with plenty of thrust. Combined with the 12,000-rpm-capable high-torque electric motors, you'll have a total of 268 hp available. The transmission is a planetary gear transaxle, which acts like a conventional CVT transmission. 0-60 in the front-wheel-drive model comes up in 7.5 seconds, while the all-wheel-drive version takes 7.3 seconds. The RX 400h handles beautifully, being responsive and firm as it corners, with less lean than its non-hybrid sibling, the RX 350. The cabin is quiet at all speeds - Lexus engineers even aerodynamically shaped the roof rack.
Inside, you'll find Lexus quality. The RX 400h is easy to enter and exit due to comfortable seat heights. On the dash, a power level meter that displays the power output of the hybrid system replaces the tachometer. Switches and controls are Lexus-quality, and while the rear seats are most comfortable for two, there are seatbelts for three. Folding the rear seats provides 84.7 cubic feet of cargo space - more than the BMW X5, the Mercedes-Benz M-Class, or the Infiniti FX.
Standard safety features include front airbags along with a driver knee airbag. Front side-impact airbags with curtain-style head protection airbags that cover both rows will deploy in the event of a rollover. Advanced ABS and electronic stability and traction control are also standard.
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Its a Toyota/Lexus and looks like the inside of a Jaguar yet runs as dependable as a Toyota.Apr 23, 2023
by Ben P
Dec 08, 2022
Good value drives well. Decent fuel economy . Needs to be serviced Dec 08, 2022
by Noura S
Jul 28, 2022
I did purchase this car and am enjoying it. The issues are cosmetic. Clear coat and some rock damage. High beam an turn signal bulb need replaced. I’m pleased altogether with the purchase Jul 28, 2022
User rating:
by Dean H
Apr 23, 2023
Its a Toyota/Lexus and looks like the inside of a Jaguar yet runs as dependable as a Toyota.Apr 23, 2023
by Ben P
Dec 08, 2022
Good value drives well. Decent fuel economy . Needs to be serviced Dec 08, 2022
by Noura S
Jul 28, 2022
I did purchase this car and am enjoying it. The issues are cosmetic. Clear coat and some rock damage. High beam an turn signal bulb need replaced. I’m pleased altogether with the purchase Jul 28, 2022
by Archie P
May 15, 2022
Mine has been good to me over the years. Not as efficient as it used to be, and pretty expensive for maintenance, but overall quite pleased.May 15, 2022
by Tasha E
Aug 29, 2021
Love, love, love this car. I’ve been wanting this car for a very long time. I think that I paid a reasonable price for this car. The only wonder I have is how can I get better gas mileage. Other than that, I love this vehicle. It drives very well and is a very comfortable ride.Aug 29, 2021
by Anonymous
May 04, 2021
As most Lexus, it’s a good vehicle. Older hybrid models, to replace the battery is about $2500., and typically I am being told their life expectancy is around 200k miles May 04, 2021
by Lonna J
Aug 11, 2020
Loved it , drive nice, just couldnt get financed due to year. So had to pass it up . Really wanted itAug 11, 2020
by No T
Dec 22, 2014
This vehicle does great in the snow. I have learned that you don’t “rock” it when stuck, you just sit there with your foot on the gas and it will spin the wheels independently until they have traction, then it will push you a little bit until you spin again (repeat) or are able to drive away. There was no storm in the past two years (in Maine), which I couldn't just drive out of my driveway (without clearing it first). I love that!
I also like that is tows (Hybrids with a grille logo which has holes in it, has the towing package). I have a small trailer to get bark mulch or take my lawn tractor to the dealer and while the mileage takes a hit, the weight of the vehicle is well suited for this kind of towing. I have towed a boat before and it did pretty good, but that is out of my comfort zone for my skillset.
The mileage can be pretty impressive, particularly when your driving is between 35-50. I have gotten as much as 36 mpg diving secondary roads through the mountains from Maine to Vermont. In the Summer, I typically see about 25-27 mpg and in the Winter it’s more like 20-22. Some of that is due to the engine needing to run to produce heat for the cabin, some is due to idling (to thaw windows before driving) but even without the idling, the batteries function better when they are warm so you will take a hit in cooler months. Still, the hybrid offers more power (if that’s your thing), and I love that the engine shuts of when coasting or stopped. We call it stealth mode.
There are two areas for which I am disappointed with the vehicle. First is the interior space. That back seat is positioned on top of the batteries, so there is a little less headroom in the back. Additionally, when the front seats are all the way back, adult rear passengers will be cramped. The front seats are adequate for 90% of the people. I am of the other 10%. Having wide shoulders and being overweight, I feel cramped. Again, 90% of you won’t likely have this experience but I thought is was worth mentioning for the other 10. The newer model style is more spacious.
The second area is about the gadgets/features/amenities. It sounds pretentious to say that a Lexus is short of luxury but in my opinion it is. Here’s some of what it has: auto adjusting headlights, auto turning headlights (when in motion, the headlights turn with the steering wheel based on your speed), motorized back door, lighted door sills (OK, that’s cool), cruise, power seats, windows, mirrors, etc., auto dimming mirrors, sun roof, navigation, nice storage space (pockets and cubbies), rain sensing wipers, auto clearing front side windows (they shed water like Rain-X is on them), and headlight washers. Ya, it’s got a lot of stuff but I want more. I would like to be able to shut off the headlights (DRL) when I go to the drive-in without having to shut off my car, I would like laser cruise, I would like turn signals in the mirrors, I would like exterior approach lighting, I would like touch sensitive locking/unlocking and push button start.
I should also mention the brakes. Hybrids are designed with regenerative braking, meaning that it uses the electric motors which propel the vehicle to recapture some of that energy when braking. It makes the brakes a but grabby, which I like. What I don't like is when you are braking, if you hit a bump in the road, or get below 20mph or so the regenerative braking shuts off and you are on the disc brakes. They work fine, but there is a bit of a lurch at the moment of transition. It's not anything that puts you at risk, but it is an uneasy feeling I would prefer not to experience.
Overall, it has been very reliable and it drives very nicely. Another great point of note has been Lexus Service. I have all my servicing done at the Lexus dealership and they provide me with a loaner without any question. This sole reason will be enough to get me to buy another Lexus.Dec 22, 2014
by Anonymous
Jul 26, 2014
This car handles well, looks great, fits a whole bunch of stuff-it has so many storage spots especially in the cargo area, gets fabulous mileage. Plus you are treated like royalty when you take it to Lexus dealer for services.Jul 26, 2014
by Scott M
Jan 06, 2013
This is a pleasant car to drive with good visibility. It is smooth and quiet. Although the hybrid works well fuel economy is not great. It has a nice interior and it is comfortable. There is little extraneous cabin noise. Jan 06, 2013
by - Netify -
Nov 16, 2012
All the good of the stock RX330 line, but with better build quality, and the phenomenal CVT transmission. If you've ever used a Polaris 4-wheeler or snow mobile, you know about CVTs, but put it behind a multi-motor (gas/electric) 268HP power plant AND AWD, and you have an amazing power and acceleration band - nearly seamless acceleration from slow to 70 - it will blow away everything non-hot-rod (not the Cayenne Twin Turbo, for example, but then that's also a V8) when you need to get on at a freeway on-ramp. My wife loves it and feels much safer and more assured knowing the power and acceleration are there when needed.
To quote the detail on the transmission/engine:
"Producing up to 268 horsepower and working through a specialized continuously variable transmission (CVT), Lexus claims the front-drive RX 400h can go from zero to 60 mph in 7.5 seconds and an even quicker 7.3 seconds for all-wheel-drive models."
Also, get the integrated video system - run video on both screens (on dash (when stopped / parking break engaged) and overhead at the same time... slick).Nov 16, 2012
by Steve M
Sep 28, 2012
.This is our first hybrid and so far, Im impressed. The change from engine to motor power and vice versa, is quite seamless and the visual of it happening on the dash is pretty captivating, intuitively letting you know how the process works.Sep 28, 2012
by Anonymous
Jul 21, 2011
Grate car mixes Luxury, Performance, Fuel Convenience, and a spacious family car
Quite. Its a well rounded good car. I would recommend it. I have most options including backup cam and reverse censers leather seating conveniences package heated seats, Gps Navigation, Sync ...ectJul 21, 2011
by Alex W
Apr 03, 2009
I absolutley love this car. It is up to date with all technology. Rides beautifly and looks great. It could be a little faster and that 270 hp v6 is a little sluggish. Overall I rate the car 5 out of 5Apr 03, 2009
by Len W
Jan 17, 2009
Great acceleration w/ good mileage. Very smooth ride, good utility. Aimable HID lights ROCK. Levinson stereo is OUTSTANDING! Hybrid drive system is very clean - this emits 75% less than a typical sedan, and Lexus hybrids can run up to 40mph completely on electric.Jan 17, 2009
by Ian M
Jun 20, 2008
there is a tray in the rear armrest that I keep a living air plant in, the rear seats reclineJun 20, 2008
by Joseph P
Apr 07, 2008
nice ride but weird when power source switches between gas and electricApr 07, 2008
For 2 days now, every time I start the car, this message appears "Check VSC System". What does it mean? Today, the car failed to start at all. The "Ready" light will not come on. Is the starting battery dead. Its been 30 months since I replaced it. This is a 2008 RX 400h with 75,200 miles on it.
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Driver knee airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Front side curtain airbags
Audio System
Antenna Type: diversity · Wireless headphones · 6 disc in-dash CD · Premium Brand: Mark Levinson · AM/FM radio · Total Number of Speakers: 11 · 210 watts
Brakes
ABS: 4-wheel · Front brake diameter: 12.6 · Front brakes: disc · Rear brake diameter: 11.3 · Rear brakes: disc
Comfort Features
Armrests: rear center folding with storage · Center console trim: alloy · Dash trim: alloy · Door trim: cloth · Floor Mat Material: carpet · Floor Mats: front · Shift knob trim: wood · Steering wheel trim: wood
Convenience Features
Cargo area power outlet: 12V · Cargo cover: retractable · Center console: front console with storage · Cruise control: adaptive · Cupholders: front · Dimming rearview mirror: auto-dimming · Memorized settings: steering wheel · Multi-function remote: keyless entry · Power outlet(s): 115V · Reading lights: front · Steering wheel: power tilt and telescopic · Steering wheel mounted controls: audio · Storage: storage organizer · Vanity mirrors: dual illuminating
Driver Seat
Adjustable lumbar support: power · Power adjustments: 10
Engine
Electric Motor Battery Type: nickel-metal hydride · Electric Motor HP: 165 · Electric Motor Power Output (Kilowatts): 123 · Electric Motor Torque: 247 · Hybrid Gas Engine HP: 208 · Hybrid Gas Engine HP@RPM: 5600 · Hybrid Gas Engine Torque: 212 · Hybrid gas Engine Torque@RPM: 4400
Front wipers: rain sensing · Liftgate window: fixed · Power windows: remote operation · Rear wiper: with washer
Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Driver knee airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Front side curtain airbags
Audio System
Antenna Type: diversity · Wireless headphones · 6 disc in-dash CD · Premium Brand: Mark Levinson · AM/FM radio · Total Number of Speakers: 8 · 210 watts
Brakes
ABS: 4-wheel · Front brake diameter: 12.6 · Front brakes: disc · Rear brake diameter: 11.3 · Rear brakes: disc
Comfort Features
Armrests: rear center folding with storage · Center console trim: alloy · Dash trim: alloy · Door trim: cloth · Floor Mat Material: carpet · Floor Mats: front · Shift knob trim: leather · Steering wheel trim: wood
Convenience Features
Cargo area power outlet: 12V · Cargo cover: retractable · Center console: front console with storage · Cruise control: adaptive · Cupholders: rear · Dimming rearview mirror: auto-dimming · Memorized settings: steering wheel · Multi-function remote: keyless entry · Power outlet(s): 12V front · Reading lights: front · Steering wheel: power tilt and telescopic · Steering wheel mounted controls: audio · Storage: storage organizer · Vanity mirrors: dual illuminating
Driver Seat
Adjustable lumbar support: power · Power adjustments: 10
Drivetrain
4WD Type: on demand
Engine
Electric Motor Battery Type: nickel-metal hydride · Electric Motor HP: 165 · Electric Motor Power Output (Kilowatts): 123 · Electric Motor Torque: 247 · Hybrid Gas Engine HP: 208 · Hybrid Gas Engine HP@RPM: 5600 · Hybrid Gas Engine Torque: 212 · Hybrid gas Engine Torque@RPM: 4400