2008 Lexus RX 400h Road Test Specs | Edmunds

2008 Lexus RX 400h - Road Test Specs

2008 Lexus RX 400h SUV

(3.3L V6 Hybrid AWD CVT Automatic)


Model year2008
ModelRX 400h
Style4dr SUV AWD (3.3L 6cyl gas/electric hybrid CVT)
Base MSRP$43,480
Options on test vehiclePremium Package, Towing Prep Package, Navigation System/Mark Levinson Package, Genuine Wood Interior Trim, Heated Front Seats w/Rain Sensing Wipers
As-tested MSRP$50,885


Drive typeAll-wheel drive
Engine typeV6, Atkinson cycle
Displacement (cc/cu-in)3,311cc (202cu-in)
Block/head materialAluminum
ValvetrainDouble overhead camshaft, 4 valves per cylinder, variable valve timing
Compression ratio (x:1)10.8:1
Redline (rpm)5,600
Horsepower (hp @ rpm)208 @ 5,600 (gasoline engine); 268 when blended with the electric motors
Torque (lb-ft @ rpm)212 @ 4,400 (gasoline engine); 247 @ 0-1,500 (front electric motor); 96 @ 0-610 (rear electric motor)
Transmission typePlanetary continuously variable


Suspension, frontIndependent, MacPherson Struts, Coil Springs, and Stabilizer Bar
Suspension, rearIndependent, MacPherson Struts, Coil Springs, and Stabilizer Bar
Steering typeElectric power steering
Steering ratio (x:1)15.6:1
Tire brandMichelin
Tire modelEnergy LX4
Tire typeAll-season
Tire size, front225/65R17 101S
Tire size, rear225/65R17 101S
Wheel size17 X 6.5 front & rear
Wheel materialAluminum alloy
Brakes, front12.6-inch ventilated disc
Brakes, rear11.3-inch disc

Track Test Results

0-45 mph (sec.)4.7
0-60 mph (sec.)7.2
0-75 mph (sec.)10.3
1/4-mile (sec. @ mph)15.2 @ 92.2
0-60 with 1 foot of rollout (sec.)6.8
Braking, 30-0 mph (ft.)35
60-0 mph (ft.)133
Slalom, 6 x 100 ft. (mph)59.6
Skid pad, 200-ft. diameter (lateral g)0.68
Sound level @ idle (dB)31.8 (electric mode)
@ Full throttle (dB)73.6

Test Driver Ratings & Comments

Acceleration commentsPrior to the first run, I gathered as many battery bars (on the display) as possible. Launch is enhanced by brake torque to wake-up the internal combustion engine, and it gets off the line quickly. Obviously seamless transmission makes the most of the combined output, pegging the electric motors' contribution. Slight tire nibble just shy of what I'd call torque steer.
Braking ratingAverage
Braking commentsSome delay between mashing the brake pedal and actual slowing. Once engaged, ABS is pretty quiet and shudder-free. No noticeable fade in pedal or distances. Noticeable body pitch.
Handling ratingAverage
Handling commentsSkid pad: Non-defeat VSC limits performance. Contrary to most Toyota systems, however, the RX's grabs brakes before the warning beeps begin. Steering doesn't load much and borders on numb. Slalom: Again the VSC limits the RX's performance, but there's still quite a lot of agility here. Steering is light and precise, body roll is pronounced but grip is trustworthy. In the end, I could sense the weight of this vehicle and the VSC clamps down right before it gets away from itself.

Testing Conditions

Elevation (ft.)421
Temperature (°F)85.7
Wind (mph, direction)5.3

Fuel Consumption

EPA fuel economy (mpg)26 City / 24 Highway
Edmunds observed (mpg)24.6
Fuel tank capacity (U.S. gal.)17.2

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)4,365
Curb weight, as tested (lbs.)4,519
Weight distribution, as tested, f/r (%)57/43
Length (in.)187.2
Width (in.)72.6
Height (in.)66.4
Wheelbase (in.)106.9
Track, front (in.)62.0
Track, rear (in.)61.2
Turning circle (ft.)37.4
Legroom, front (in.)42.5
Legroom, rear (in.)36.4
Headroom, front (in.)39.4
Headroom, rear (in.)37.5
Shoulder room, front (in.)57.9
Shoulder room, rear (in.)57.1
Seating capacity5
Cargo volume (cu-ft)38.3
Max. cargo volume, seats folded (cu-ft)84.7


Bumper-to-bumper4 years/50,000 miles
Powertrain6 years/70,000 miles
Corrosion6 years/Unlimited miles
Roadside assistance4 years/Unlimited miles
Free scheduled maintenanceUnlimited within the first 5,000 miles


Front airbagsStandard
Side airbagsStandard dual front
Head airbagsStandard front and rear
Knee airbagsDriver only
Antilock brakes4-wheel ABS
Electronic brake enhancementsBraking assist, electronic brakeforce distribution
Traction controlStandard
Stability controlStandard
Rollover protectionStandard
Tire-pressure monitoring systemTire-pressure monitoring
Emergency assistance systemNot available
NHTSA crash test, driver5 stars
NHTSA crash test, passenger5 stars
NHTSA crash test, side front5 stars
NHTSA crash test, side rear5 stars
NHTSA rollover resistanceNot tested

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