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Engine Technical Data
Engine type - Number of cylinders
Inline 6
V 6
Inline 5
Engine Code
OM 656 D 29 SCR
Fuel type
Diesel
Diesel
Petrol
Fuel System
Common Rail
Common Rail
Direct Injection
Engine Alignment
Longitudinal
Longitudinal
Transverse
Engine Position
Front
Front
Front
Engine displacement
2925 cm3 / 178.5 cu-in
2967 cm3 / 181.1 cu-in
2480 cm3 / 151.3 cu-in
Bore
82.0 mm
3.23 inches
83.0 mm
3.27 inches
82.5 mm
3.25 inches
Stroke
92.4 mm
3.64 inches
91.4 mm
3.6 inches
92.8 mm
3.65 inches
Number of valves
24
24
20
Aspiration
Turbo Intercooler
Turbo Intercooler
Turbo Intercooler
Compression Ratio
15.5
16.0
10.0
Total System Power
340 PS / 335 HP / 250 kW
286 PS / 282 HP / 210 kW
400 PS / 395 HP / 294 kW
Total System Torque
700 Nm / 516 lb-ft
620 Nm / 457 lb-ft
500 Nm / 368 lb-ft
Horsepower
340 PS / 335 HP / 250 kW @ 3600–4400 rpm
349 PS / 344 HP / 257 kW @ 3850 rpm
400 PS / 395 HP / 294 kW @ 5600 rpm
Maximum torque
700 Nm / 516 lb-ft @ 1200 rpm
700 Nm / 516 lb-ft @ 2500-3100 rpm
500 Nm / 368 lb-ft @ 2250 rpm
Drive wheels - Traction - Drivetrain
AWD
AWD
AWD
Transmission Gearbox - Number of speeds
9
8
7
Clutch Type
Sequential Automatic
Automatic
Dualclutch Automatic
Size, Dimensions, Aerodynamics and Weight
Body
Sedan
Estate
Sedan
Num. of Doors
4
5
4
Num. of Seats
5
5
5
Wheelbase
293.9 cm / 115.71 inches
292.4 cm / 115.12 inches
263.1 cm / 103.58 inches
Length
492.3 cm / 193.82 inches
493.9 cm / 194.45 inches
454.2 cm / 178.82 inches
Width
185.2 cm / 72.91 inches
188.6 cm / 74.25 inches
185.1 cm / 72.87 inches
Height
146.8 cm / 57.8 inches
149.4 cm / 58.82 inches
141.2 cm / 55.59 inches
Front Axle
161.9 cm / 63.74 inches
163.0 cm / 64.17 inches
159.2 cm / 62.68 inches
Rear Axle
161.9 cm / 63.74 inches
161.7 cm / 63.66 inches
152.4 cm / 60 inches
Front Brakes - Disc dimensions
Vented Discs
Vented Discs (400 mm / 15.75 inches)
Vented Discs
Rear Brakes - Disc dimensions
Vented Discs
Vented Discs
Vented Discs
Front Tyres - Rims dimensions
225/55 R17
255/40 R20
265/30 R19
Rear Tyres - Rims dimensions
225/55 R17
255/40 R20
245/35 R19
Curb Weight
2023 kg / 4460 lbs
1987 kg / 4381 lbs
1661 kg / 3662 lbs
Dry Weight
1905 kg / 4200 lbs
1865 kg / 4112 lbs
1550 kg / 3417 lbs
Max. Towing Capacity Weight
2100 kg / 4630 lbs
2000 kg / 4409 lbs
Weight/Power Output Ratio
5.95 Kg/hp
6.95 Kg/hp
4.15 Kg/hp
Trunk / Boot capacity
540 L / 19.1 cu-ft
565-1680 L / - cu-ft
321 L / 11.3 cu-ft
Turning circle
11.6 m / 38.1 feet
12.1 m / 39.7 feet
12.0 m / 39.4 feet
Front Suspension
Independent Double wishbone. Coil Springs. Anti-roll bar.
Multi-link. Coil Springs. Anti-roll bar.
Independent. MacPherson. Coil Springs. Anti-roll bar.
Rear Suspension
Multi-link. Coil Springs. Anti-roll bar.
Multi-link. Coil Springs. Anti-roll bar.
Multi-link. Coil Springs. Anti-roll bar.
Top Speed
250 km/h / 155 Mph
250 km/h / 155 Mph
250 km/h / 155 Mph
Acceleration 0 to 100 km/h (0 to 62 mph)
4.9 s
5.0 s
3.8 s
Fuel Consumption (Economy), Emissions and Range
Fuel Consumption - Economy - Combined
5.8 L/100 km
49 MPG UK
41 MPG US
Fuel Consumption - Economy - City NEDC
7.4 L/100 km
38 MPG UK
32 MPG US
11.1 L/100 km
25 MPG UK
21 MPG US
Fuel Consumption - Economy - Open road NEDC
5.6 L/100 km
50 MPG UK
42 MPG US
6.5 L/100 km
43 MPG UK
36 MPG US
Fuel Consumption - Economy - Combined NEDC
5.8 L/100 km
49 MPG UK
41 MPG US
6.2 L/100 km
46 MPG UK
38 MPG US
8.2 L/100 km
34 MPG UK
29 MPG US
Fuel Consumption - Economy - Combined WLTP
7.7 L/100 km
37 MPG UK
31 MPG US
8.9 L/100 km
32 MPG UK
26 MPG US
Range
1137 km / 707 miles
Range WLTP
948 km / 589 miles
618 km / 384 miles
Fuel Tank Capacity
66 L
17.4 US gallons
14.5 UK gallons
73 L
19.3 US gallons
16.1 UK gallons
55 L
14.5 US gallons
12.1 UK gallons
CO2 emissions
154 g/Km (Mercedes Benz)
164 g/Km (Audi)
188 g/Km (Audi)
CO2 emissions WLTP
202 g/Km (Audi)
202 g/Km (Audi)