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Engine Technical Data
Engine type - Number of cylinders
Inline 4
Inline 6
Engine Code
M254
M 256.830
Fuel type
Hybrid / Petrol
Hybrid / Petrol
Electric
Fuel System
Direct Injection
Direct Injection
Engine Alignment
Longitudinal
Longitudinal
Engine Position
Front
Front
Engine displacement
122 cu-in / 1999 cm3
183 cu-in / 2999 cm3
Bore
3.27 inches
83.0 mm
3.27 inches
83.0 mm
Stroke
3.64 inches
92.35 mm
3.64 inches
92.4 mm
Number of valves
16
24
Aspiration
Turbo Intercooler
Turbo Intercooler
Compression Ratio
10.5
10.0
Total System Power
383 HP / 388 PS / 285 kW
537 HP / 544 PS / 400 kW
611 HP / 619 PS / 455 kW
Total System Torque
442 lb-ft / 600 Nm
553 lb-ft / 750 Nm
748 lb-ft / 1015 Nm
Horsepower
249 HP / 252 PS / 185 kW @ 5800 rpm
443 HP / 449 PS / 330 kW @ 5800-6100 rpm
Maximum torque
295 lb-ft / 400 Nm @ 2000-3000 rpm
413 lb-ft / 560 Nm @ 2200-5000 rpm
Total electric power
134 HP / 136 PS / 100 kW
134 HP / 136 PS / 100 kW
611 HP / 619 PS / 455 kW
Total electric torque
324 lb-ft / 440 Nm
354 lb-ft / 480 Nm
748 lb-ft / 1015 Nm
Number of electric engines
1
1
2
Electric engine #1 type
SSM - Separately Excited Synchronous Motor
PSM - Permanent Magnet Synchronous Motor
Electric engine #1 Power
134 HP / 136 PS / 100 kW
134 HP / 136 PS / 100 kW
Electric engine #1 Torque
324 lb-ft / 440 Nm
354 lb-ft / 480 Nm
Drive wheels - Traction - Drivetrain
AWD
AWD
AWD
Transmission Gearbox - Number of speeds
9
9
1
Clutch Type
Automatic
Automatic
Auto CVT
Size, Dimensions, Aerodynamics and Weight
Body
SUV
SUV
SUV / TT
Num. of Doors
5
5
5
Num. of Seats
5
5
5
Wheelbase
115.55 inches / 293.5 cm
117.91 inches / 299.5 cm
118.11 inches / 300.0 cm
Length
194.53 inches / 494.1 cm
195.04 inches / 495.4 cm
195 inches / 495.3 cm
Width
76.65 inches / 194.7 cm
76.65 inches / 194.7 cm
77.44 inches / 196.7 cm
Width with mirrors
84.92 inches / 215.7 cm
84.92 inches / 215.7 cm
Height
67.56 inches / 171.6 cm
70.16 inches / 178.2 cm
66.77 inches / 169.6 cm
Front Axle
66.14 inches / 168.0 cm
66.18 inches / 168.1 cm
66.1 inches / 167.9 cm
Rear Axle
68.03 inches / 172.8 cm
67.95 inches / 172.6 cm
67.28 inches / 170.9 cm
Ground clearance
7.87 inches / 20.0 cm7.87 inches / 20.0 cm
8.07 inches / 20.5 cm8.07 inches / 20.5 cm
7.99 inches / 20.3 cm7.99 inches / 20.3 cm
Approach angle (deg)
21.0 °
25.0 °
Breakover (Rampover) angle (deg)
16.0 °
17.0 °
Departure angle (deg)
21.0 °
25.0 °
Front Brakes - Disc dimensions
Vented Discs
Vented Discs (15.75 inches / 400 mm)
Vented Discs (13.7 inches / 348 mm)
Rear Brakes - Disc dimensions
Vented Discs
Vented Discs (14.57 inches / 370 mm)
Vented Discs (13.58 inches / 345 mm)
Front Tyres - Rims dimensions
275/50 R20
275/45 R21
255/50 R21
Rear Tyres - Rims dimensions
275/50 R20
315/40 R21
255/50 R21
Curb Weight
5886 lbs / 2670 kg
6173 lbs / 2800 kg
5807 lbs / 2634 kg
Dry Weight
5642 lbs / 2559 kg
Max. Towing Capacity Weight
5952 lbs / 2700 kg
7275 lbs / 3300 kg
5512 lbs / 2500 kg
Weight/Power Output Ratio
6.88 Kg/hp
5.15 Kg/hp
4.26 Kg/hp
Trunk / Boot capacity
18 cu-ft / 510 L
17.3 cu-ft / 490 L
- cu-ft / 500-1750 L
Trunk / Boot First Row
58.1 cu-ft / 1645 L
67.6 cu-ft / 1915 L
Turning circle
39 feet / 11.9 m
40.7 feet / 12.4 m
42 feet / 12.8 m
Front Suspension
Independent Double wishbone. Coil Springs. Anti-roll bar.
Double wishbone. Pneumatic-Air
Independent Double wishbone. Air Suspension. Anti-roll bar.
Rear Suspension
Multi-link. Coil Springs. Anti-roll bar.
Multi-link. Pneumatic-Air.
Multi-link. Air Suspension. Anti-roll bar.
Top Speed
131 Mph / 210 km/h
155 Mph / 250 km/h
155 Mph / 250 km/h
Acceleration 0 to 100 km/h (0 to 62 mph)
6.1 s
4.7 s
3.8 s
Fuel Consumption (Economy), Emissions and Range
Fuel Consumption - Economy - Combined WLTP
294 MPG
0.8 L/100 km
353 MPG UK
181 MPG
1.3 L/100 km
217 MPG UK
Battery Type
Lithium-ion
Lithium-ion
Lithium-ion
Battery capacity
31.2 kWh / 27.0 kWh
31.2 kWh / 27.0 kWh
112 kWh
Charging Time
DC - 60 kW - 80 % - 0h20m
Wallbox 3-phase - 11 kW - 100 % - 2h15m
DC - 60 kW - 80 % - 0h20m
Wallbox 3-phase - 11 kW - 100 % - 2h22m
Range WLTP
5050 miles / 8125 km
3108 miles / 5000 km
Electric Range NEDC
53 miles / 86 km
Electric Range WLTP
65 miles / 105 km
53 miles / 86 km
351 miles / 565 km
Electric Range WLTP
70 miles / 112 km
58 miles / 93 km
Average energy consumption WLTP
2.53 miles/ kWh (24.6 kWh / 100 km)
2.16 miles/ kWh (28.8 kWh / 100 km)
2.85 miles/ kWh (21.8 kWh / 100 km)
Charging Time
11:12 hours
Fuel Tank Capacity
17.2 gallons
65 L
14.3 UK gallons
17.2 gallons
65 L
14.3 UK gallons
CO2 emissions WLTP
19 g/Km (Mercedes Benz)
29 g/Km (Mercedes Benz)
Emission standard
Euro 6d - WLTP
Euro 6d - WLTP