2011 Mercedes-Benz E-Class - Road Test Specs

2011 Mercedes-Benz E-Class Convertible

(3.5L V6 7-speed Automatic)
Vehicle
Model year2011
MakeMercedes-Benz
ModelE-Class
StyleE350 2dr Convertible (3.5L 6cyl 7A)
Base MSRP$57,725
Options on test vehicleP02 Package ($6,450 -- includes keyless entry/ignition, COMAND multifunction controller, navigation system, Harman Kardon audio, satellite radio, bi-xenon headlights, rearview camera, iPod interface, heated/ventilated front seats, Airscarf neck warmers); Distronic Plus Package ($2,650 -- includes adaptive cruise control, front/rear park assist); Appearance Package ($1,990 -- includes multicontour front seats, sport-tuned suspension, 18-inch AMG alloy wheels, cross-drilled brake rotors, sport pedals, shift paddles); Mbrace Telematics ($660).
As-tested MSRP$69,475
Drivetrain
Drive typeRear-wheel Drive
Engine typeNaturally aspirated, direct-injected gasoline V6
Displacement (cc/cu-in)3,498cc (213 cu-in)
Block/head materialAluminum/aluminum
ValvetrainDOHC, four valves per cylinder, variable intake + exhaust-valve timing
Compression ratio (x:1)10.7
Redline (rpm)6,250
Horsepower (hp @ rpm)268 @ 6,000
Torque (lb-ft @ rpm)258 @ 2,400
Fuel typePremium unleaded (required)
Transmission typeSeven-speed automatic
Transmission and axle ratios (x:1)I= 4.377; II=2.859; III=1.921; IV=1.368; V=1.00; VI= 0.82; VII= 0.728 FD=2.82
Chassis
Suspension, frontIndependent MacPherson struts, coil springs, twin-tube dampers, stabilizer bar
Suspension, rearIndependent multilink, coil springs, twin-tube dampers, stabilizer bar
Steering typeHydraulic-assist, speed-proportional rack-and-pinion power steering
Steering ratio (x:1)14.7
Tire brandContinental
Tire modelContiSport Contact 3
Tire typeSummer
Tire size, frontP235/40ZR18 95Y
Tire size, rearP255/35ZR18 94Y
Wheel size18-by-7.5 inches front -- 18-by-8.5 inches rear
Wheel materialCast aluminum
Brakes, front12.7-inch ventilated cast-iron discs
Brakes, rear11.8-inch ventilated cast-iron discs
Track Test Results
Acceleration, 0-30 mph (sec.)2.6
0-45 mph (sec.)4.5
0-60 mph (sec.)6.8
0-75 mph (sec.)10.0
1/4-mile (sec. @ mph)15.0 @ 93.1
0-60 with 1 foot of rollout (sec.)6.5
Braking, 30-0 mph (ft.)28
60-0 mph (ft.)110
Slalom, 6 x 100 ft. (mph)64.4
Skid pad, 200-ft. diameter (lateral g)0.86
Sound level @ idle (dB)41.4
@ Full throttle (dB)74.8
@ 70 mph cruise (dB)67.1
Test Driver Ratings & Comments
Acceleration commentsThere's an optimal wisp of spin that gets the E350 off the line smartly, but ultimately it makes little difference. Consistent runs across the board. Upshifts at redline whether in Comfort or Sport mode.
Braking ratingGood
Braking commentsBelt-cinching with each full-ABS panic stop from 60 mph. Acceptable amount of fade without pedal effort change. Short distance for a 2-ton convertible.
Handling ratingGood
Handling commentsSlalom: Good balance and crisp turn-in had me smacking cones with the rear wheels, forcing me to take what felt like a wide line. Eventually, understeer became the limiting factor. However, having the ESC on eliminated the understeer and improved the ultimate speed through the cones. Skid pad: Remarkable amount of grip here -- more even than E550 coupe. Easy to balance with the throttle to maintain smooth, consistent arc with ESC off. Steering is a little "distant" but has the precision and feel of a sports car. With ESC on, it subtly keeps the car dead on the painted line with no steering.
Testing Conditions
Elevation (ft.)0
Temperature (F)69
Relative humidity (%)53
Wind (mph, direction)2.8, head
Fuel Consumption
EPA fuel economy (mpg)17 city/25 highway/20 combined
Edmunds observed (mpg)17.6
Fuel tank capacity (U.S. gal.)17.4
Dimensions & Capacities
Curb weight, mfr. claim (lbs.)3,883
Curb weight, as tested (lbs.)4,026
Weight distribution, as tested, f/r (%)51.3/48.7
Length (in.)185.0
Width (in.)70.3
Height (in.)55.0
Wheelbase (in.)108.7
Track, front (in.)60.8
Track, rear (in.)60.6
Turning circle (ft.)35.9
Legroom, front (in.)42.0
Legroom, rear (in.)30.1
Headroom, front (in.)38.3
Headroom, rear (in.)36.2
Shoulder room, front (in.)54.1
Shoulder room, rear (in.)47.8
Seating capacity4
Cargo volume (cu-ft)11.5
Max. cargo volume, seats folded (cu-ft)11.5
Warranty
Bumper-to-bumper4 years/50,000 miles
Powertrain4 years/50,000 miles
Corrosion4 years/50,000 miles
Roadside assistanceUnlimited
Safety
Front airbagsStandard
Side airbagsDual front
Head airbagsFront
Knee airbagsDriver only
Antilock brakesFour-wheel ABS
Electronic brake enhancementsBraking assist, electronic brakeforce distribution
Traction controlTraction control
Stability controlStability control
Rollover protectionSide curtain airbag, rollover sensor, convertible occupant rollover protection
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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