- Combustion principle: four-stroke petrol engine
- Exhaust-gas treatment: 2 catalytic converters
- Arrangement: front
- Installation direction: longitudinally; over axle
- Engine designation / type: M 273 E 55 / 273.961
- Number of cylinders / arrangement: 8 / 90° V
- Bore: 98.0 mm
- Stroke: 90.5 mm
- Displacement : 5461 cc
- Compression ratio: 10.7
- Rated power: 285 kW / 388 DIN/hp at 6000 rpm
- Nominal torque: 530 Nm at 2800 - 4800 rpm
- Number of valves per cylinder: 4
- Valve operation: 2 overhead camshafts per cylinder bank (variably adjustable)
- Camshaft drive: intake camshafts via double roller chain, outlet camshafts via gearwheel engagement with intake camshafts
- Injection system (location): intake duct
- Injection pump / injection system (type): microprocessor-controlled injection system with hot-film air-mass sensor
- Injection pump (type): electric delivery pump
- Coolant / filling quantity with heating: 12.0 l
- Oil change quantity (with filter): 8.5 l
- On-board power supply voltage: 12 v
- Battery capacity: 70 + 35 Ah (in the engine compartment and in the boot)
- Generator: three-phase AC / 2520 w
- Ignition system: electronic mapped ignition
- Fuel tank capacity/of which reserve: 90 / 11 l
- Fuel tank (location): above the rear axle
- Front-wheel suspension (type): independent suspension
- Front axle: four-link suspension with Active Body Control (ABC)
- Rear-wheel suspension (type): independent suspension
- Rear axle: multilink suspension with Active Body Control (ABC)
- Suspension front / rear: coil springs, twin-tube gas pressure shock absorbers with Adaptive Damping System / coil springs, twin-tube gas pressure shock absorbers with Adaptive Damping System
- Steering (type): rack-and-pinion
- Steering assistance: hydraulically assisted
- Brakes front: discs, internally ventilated
- Rear brakes: discs, internally ventilated
- Disc or drum diameter front : 350 mm
- Disc or drum diameter rear: 320 mm
- Parking brake (actuation): electrically (manually operated via push button)
- Front rims: 8 J x 17
- Rear rims: 8 J x 17
- Front tyres: 235/55 R 17
- Rear tyres: 235/55 R 17
- Drive: rear wheel drive
- Transmission: automatic
- Gearbox type designation: 7G-TRONIC Sport
- Availability: as standard
- Clutch: hydraulic torque converter with lock-up clutch (governed)
- Gearbox design: planetary gear group
- Transmission control: electrohydraulic
- Forward gears (total): 7
- Gear ratio: I. 4.38; II. 2.86; III. 1.92; IV. 1.37; V. 1.00; VI. 0.82; VII. 0.73; R. 3.42
- Axle drive ratio: 2.65
- Maximum speed: 250 km/h (electronically limited)
- Acceleration 0-100 kpm: 5.4 s
- Fuel consumption urban / extra-urban / combined (according to the respectively valid measurement and calculation methods): 18.1 / 8.5 / 12.1 l per 100 km (premium petrol)
- Wheelbase: 2955 mm
- Front track gauge: 1601 mm
- Rear track gauge: 1607 mm
- Vehicle length: 5065 mm
- Vehicle width: 1871 mm
- Vehicle height: 1418 mm
- cW drag coefficient: 0.27
- Turning circle diameter: 11.60 m
- Unladen weight (according to the respectively valid measurement or calculation methods): 1995 kg
- Permissible total weight: 2510 kg
- Permissible axle load front: 1195 kg
- Permissible axle load rear: 1335 kg
- Payload: 515 kg
- Units produced: 14,550
- Prices: 06.2006: EUR 105,850.00
07.2007: EUR 110,372.50
07.2008: EUR 112,276.50
01.2009: EUR 114.775,50
02.2010: EUR 116,441.50