2014 Mercedes-Benz S550 Sedan Full Test Specs | Edmunds

2014 Mercedes-Benz S-Class - Road Test Specs

2014 Mercedes-Benz S-Class Sedan

(4.7L V8 Twin-turbo 7-speed Automatic)


Year Make Model2014 Mercedes-Benz S-Class S550 4dr Sedan (4.7L 8cyl Turbo 7A)
Vehicle TypeRWD 4dr 5-passenger Sedan
Base MSRP$93,825
Options on test vehicleIridium Silver Metallic, Sport Package ($5,900 -- includes Sport body styling [front airdam, flared side sills and rear valence and polished chrome highlights}; 19-inch AMG twin five-spoke wheels), Premium 1 Package ($4,500 -- includes Parktronic with Active Parking Assist; power rear window sun blinds; heated and active ventilated front seats; active multicontour seats with massage; Keyless Go/hands-free access; front heated seats), Magic Body Control ($4,450 --scans the road surface for variations and counteracts the effects of the road surface to deliver a more smooth ride), Rear Seat Package ($3,000 -- includes power right rear footrest; four-zone automatic climate control; easy-adjust rear-seat head restraints; PreSafe rear seatbelt buckles; rear seatbelt airbags), Driver Assistance Package ($2,800 -- includes Distronic Plus with steering assist; Bas Plus with Cross-Traffic Assist; PreSafe Brake with pedestrian detection; PreSafe Plus; Active Blind Spot Assist; Active Lane Keeping Assist), Power Outboard Rear Seats With Memory ($1,515), Air Balance Package ($350)
As-tested MSRP$116,340
Assembly locationSindelfingen, Germany


ConfigurationLongitudinal, front engine, rear-wheel drive
Engine typeTwin-turbocharged, direct-injected V8, gasoline with auto stop-start
Displacement (cc/cu-in)4,663/285
Block/head materialAluminum/aluminum
ValvetrainDOHC, 4 valves per cylinder, variable intake + exhaust-valve timing
Compression ratio (x:1)10.5
Redline, indicated (rpm)6,250
Fuel cutoff/rev limiter (rpm)6,250
Horsepower (hp @ rpm)449 @ 5,250
Torque (lb-ft @ rpm)516 @ 1,800
Fuel typePremium unleaded (required)
Transmission typeSeven-speed automatic
Transmission ratios (x:1)I=4.38, II=2.86, III=1.92, IV=1.37, V=1.0, VI=0.82, VII=0.73
Final-drive ratio (x:1)2.65
Differential(s)Rear: open


Suspension, frontIndependent multilink, pneumatic springs, self-adjusting two-mode continuously variable dampers, stabilizer bar
Suspension, rearIndependent multilink, pneumatic springs, self-adjusting two-mode continuously variable dampers, stabilizer bar
Steering typeElectric-over-hydraulic-assist, speed-proportional
Steering ratio (x:1)15.5
Tire make and modelPirelli Cinturato P7
Tire typeAll-season front and rear
Tire size, front245/45R19 102H M+S
Tire size, rear275/40R19 101H M+S
Wheel size, front19-by-8.5 inches
Wheel size, rear19-by-9.5 inches
Wheel materialAlloy
Brakes, front14.6-inch two-piece ventilated cross-drilled cast-iron discs with four-piston fixed calipers
Brakes, rear14.2-inch two-piece ventilated cross-drilled cast-iron discs with single-piston sliding calipers

Track Test Results

Acceleration, 0-30 mph (sec.)2.2
0-45 mph (sec.)3.5
0-60 mph (sec.)4.9
0-75 mph (sec.)7.0
1/4-mile (sec. @ mph)13.1 @ 108.2
0-60 with 1 foot of rollout (sec.)4.6
0-30 mph, trac ON (sec.)2.3
0-45 mph, trac ON (sec.)3.5
0-60 mph, trac ON (sec.)5.0
0-75 mph, trac ON (sec.)7.1
1/4-mile, trac ON (sec. @ mph)13.2 @ 108.1
0-60, trac ON with 1 foot of rollout (sec.)4.7
Braking, 30-0 mph (ft.)29
60-0 mph (ft.)115
Slalom, 6 x 100 ft. (mph)65.6
Slalom, 6 x 100 ft. (mph) ESC ON65.6
Skid pad, 200-ft. diameter (lateral g)0.89
Skid pad, 200-ft. diameter (lateral g) ESC ON0.89
Sound level @ idle (dB)37.5
@ Full throttle (dB)67.6
@ 70 mph cruise (dB)60.1

Test Driver Ratings & Comments

Acceleration commentsThough its 0-60 time is still impressive, there's a soft spot in the S550's acceleration just after it leaves the line. Still, this is a big car that goes really fast. Acceleration is virtually seamless and builds impressively as speeds increase. After the initial softness, there's a mountain of torque pushing the S550 down the track. Manual mode is required to launch in 1st gear, though the difference at the end of the quarter-mile is small. Won't hold gears at redline, which isn't a burden with the wide lattitude of power available.
Braking commentsThough braking tests produced inconsistent distance fade, pedal feel remained solid and consistent during six 60-0 stops. There was a minor but noticeable reduction in brake performance during our acceleration tests, which required repeated slowing from 110 mph to 30 mph at the end of the quarter-mile. Still, these brakes seem adequate for any normal use this car will likely see.
Handling commentsActive Body Control is largely responsible for the S550's character in both handling tests, where the car is flat and responsive regardless which mode (Sport of Comfort) it's in. Slalom: Overall, this is an amazing performance for a 2.5-ton sedan. Steering is intuitive and responsive and though stability control is instrusive, the S always goes where it's pointed. The electronics do their best to rotate the car and understeer is largely kept at bay. Skid pad: Comfort mode, which has more body roll, produced the best compliance and therefore the best grip. It's fairly easy to follow a line in the S, though doing so does require more commitment than I was initially comfortable with. The limits are defined by ESP here, as the throttle is eliminated long before the grip limits are found. Bottom line? The S will corner faster than you need it to in most any situation.

Testing Conditions

Test date2/4/2014
Elevation (ft.)1,121
Temperature (°F)58.4
Relative humidity (%)46.69
Barometric pressure (in. Hg)28.9
Wind (mph, direction)1.5, tail and cross
Odometer (mi.)8,583
Fuel used for test91 octane
As-tested tire pressures, f/r (psi)32/32

Fuel Consumption

EPA fuel economy (mpg)20 combined/17 city/25 highway
Edmunds observed (mpg)16.8
Fuel tank capacity (U.S. gal.)21.1
Driving range (mi.)527.5

Audio and Advanced Technology

Stereo description13-speaker Burmester surround-sound system with six-CD changer, HD radio, Tune-in Internet radio
iPod/digital media compatibilityStandard iPod via USB jack, Bluetooth streaming audio
Satellite radioOptional
Hard-drive music storage capacity (Gb)Standard 10GB music storage capacity
Rear seat video and entertainmentOptional DVD player, screen incorporated into front-seat headrests
Bluetooth phone connectivityStandard
Navigation systemStandard hard-drive based with traffic, 12.3-inch display screen (measured diagonally)
Telematics (OnStar, etc.)Standard Mbrace2 with 6 -month trial period, 3 months for mbrace Plus and MB apps
Smart entry/StartStandard ignition, doors, trunk/hatch
Parking aidsStandard parking sonar front and rear, optional active parking assist and cross-traffic assist
Blind-spot detectionOptional
Adaptive cruise controlOptional with steering assist
Lane-departure monitoringOptional departure warning with active correction
Collision warning/avoidanceOptional
Night VisionOptional
Driver coaching displayStandard

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)4,729
Curb weight, as tested (lbs.)4,883
Weight distribution, as tested, f/r (%)52/48
Length (in.)206.5
Width (in.)74.8
Height (in.)58.7
Wheelbase (in.)124.6
Turning circle (ft.)40.0
Legroom, front (in.)41.4
Legroom, rear (in.)43.0
Headroom, front (in.)39.7
Headroom, rear (in.)39.2
Shoulder room, front (in.)59.7
Shoulder room, rear (in.)59.1
Seating capacity5
Trunk volume (cu-ft)16.3
Payload, mfr. max claim (lbs.)1,576


Bumper-to-bumper4 years/50,000 miles
Powertrain4 years/50,000 miles
Corrosion4 years/50,000 miles
Roadside assistanceLifetime

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