2011 Mercedes-Benz S-Class S400 Hybrid Road Test Specs | Edmunds

2011 Mercedes-Benz S-Class - Road Test Specs

2010 Mercedes-Benz S400 Hybrid

(3.5L V6 Hybrid 7-speed Automatic)


Model year2010
StyleS400 Hybrid 4dr Sedan (3.5L 6cyl gas/electric hybrid 7A)
Base MSRP$87,950
Options on test vehicleSport Package ($5,800 -- includes 19-inch AMG wheels, sport body styling); Premium II Package ($4,950 -- includes bi-xenon headlights with active curve illumination, LED daytime running lights, adaptive high beams, heated and cooled active front seats, multicontour front seats with massage, keyless ignition/entry, front and rear parking sensors, rearview camera); Rear-Seat Package ($2,990 -- includes eight-way power-adjustable outboard rear seats, four-zone automatic climate control, heated and ventilated outboard rear seats); Driver Assistance Package ($2,900 -- includes advanced adaptive cruise control, PreSafe brake, blind spot warning system and lane departure warning system); Rear-Seat Entertainment Package ($2,450 -- includes two display screens, two monitors, two wireless headphones and a separate DVD input); Night View Assist Plus ($1,740); Panorama Sunroof ($1,070); Diamond White Paint ($795); Wood/Premium Leather Steering Wheel ($580).
As-tested MSRP$112,100


Drive typeRear-wheel drive
Engine typeV6
Block/head materialAluminum/aluminum
ValvetrainDouble overhead camshaft
Compression ratio (x:1)10.7
Redline (rpm)6,500
Horsepower (hp @ rpm)295 @ 6,000
Torque (lb-ft @ rpm)284 @ 2,800
Transmission typeSeven-speed automatic
Transmission and axle ratios (x:1)I=4.38, II=2.86, III=1.92, IV=1.37, V=1.00, VI=0.82, VII=0.73, R=3.42, Final=2.23
Differential(s)3,498cc (213 cu-in)


Suspension, frontMultilink
Suspension, rearMultilink
Steering typeElectric speed-proportional power steering
Steering ratio (x:1)17.83
Tire brandContinental
Tire modelContiProContact
Tire typeAll-Season
Tire size, front255/40R19
Tire size, rear255/40R19
Wheel size19-by-8.5 inches front and rear
Wheel materialAlloy
Brakes, frontVentilated disc
Brakes, rearVentilated disc

Track Test Results

Acceleration, 0-30 mph (sec.)2.8
0-45 mph (sec.)5.1
0-60 mph (sec.)7.7
0-75 mph (sec.)11.2
1/4-mile, mfr. claim (sec. @ mph)15.6 @ 89.8
0-60 with 1 foot of rollout (sec.)7.3
Braking, 30-0 mph (ft.)30
60-0 mph (ft.)121
Slalom, 6 x 100 ft. (mph)Stability Control Off = 61; On = 62.3
Skid pad, 200-ft. diameter (lateral g)Stability Control Off = 0.76; On = 0.75g
Sound level @ idle (dB)36.7
@ Full throttle (dB)68.9
@ 70 mph cruise (dB)65.2

Test Driver Ratings & Comments

Acceleration commentsI started acceleration runs with 97 percent showing on battery capacity and by run 5, it had gone down to 82 percent, but this didn't appear to affect the acceleration or trap speed (much). Still, the launch is pretty lazy as the car pauses momentarily while it realizes you want "both barrels blazing." Once under way, the power is remarkably linear and upshifts are buttery smooth.
Braking ratingGood
Braking commentsBelts cinch up with full-ABS stops! The first stop was shorter than the remaining five that were tightly grouped, showing good fade resistance. Pedal effort was low and felt a little squishy. Also noticed an atypical (not like hot brakes) odor with no loss in performance.
Handling ratingAverage
Handling commentsSoft and compliant in Comfort setting, but even with the throttle closing with ESP on, the grip is about the same as Sport with ESP off (which it is not, by the way). Steering feels a little distant and vague. Steering feels buttery smooth in the slalom, but a little numb in terms of feeling the surface. Appropriately stately (moderate) turn-in and yaw reactions and neutral attitude -- you really notice that there are no heavy batteries. Good transition in Sport, and also in Comfort, though slightly delayed. Not an embarrassing performance -- especially for a hybrid lux sedan.

Testing Conditions

Temperature (°F)52.06
Relative humidity (%)57.25
Wind (mph, direction)2.0, Crosswind

Fuel Consumption

EPA fuel economy (mpg)19 city/26 highway
Edmunds observed (mpg)Best=21.1; Worst=15.4; Overall=17.7
Fuel tank capacity (U.S. gal.)23.8

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)4,390
Curb weight, as tested (lbs.)4,735
Weight distribution, as tested, f/r (%)52.8/47.2
Length (in.)206.5
Width (in.)73.7
Height (in.)58.0
Wheelbase (in.)124.6
Track, front (in.)63.0
Track, rear (in.)63.2
Turning circle (ft.)40.0
Legroom, front (in.)41.9
Legroom, rear (in.)42.3
Headroom, front (in.)37.8
Headroom, rear (in.)38.5
Shoulder room, front (in.)59.1
Shoulder room, rear (in.)58.7
Seating capacity5
Cargo volume (cu-ft)16.4
Max. cargo volume, seats folded (cu-ft)16.4


Bumper-to-bumper4 years/50,000 miles
Powertrain4 years/50,000 miles
Corrosion4 years/50,000 miles
Roadside assistance4 years/unlimited miles
Free scheduled maintenanceNot available


Front airbagsStandard
Side airbagsDual front and dual rear
Head airbagsFront and rear
Antilock brakes4-wheel ABS
Electronic brake enhancementsBraking assist, electronic brakeforce distribution
Traction controlTraction control
Stability controlStability control
Rollover protectionSide curtain airbag rollover sensor
Tire-pressure monitoring systemTire-pressure monitoring
Emergency assistance systemPre-collision safety system
NHTSA crash test, driverNot tested
NHTSA crash test, passengerNot tested
NHTSA crash test, side frontNot tested
NHTSA crash test, side rearNot tested
NHTSA rollover resistanceNot tested
IIHS offsetNot tested

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