- Combustion principle: four-stroke petrol engine
- Exhaust-gas treatment: catalytic converter
- Arrangement: in front
- Installation direction: longitudinally; above the axis
- Engine designation / type: M 273 KE 55 / 273.971
- 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 duplex roller chain, exhaust camshafts via gear engagement with intake camshafts
- Injection system (location): intake duct
- Injection pump / injection system (type): microprocessor-controlled injection system with hot-film air-mass measurement
- Injection pump (type): electric delivery pump
- Oil change quantity (with filter): 8.5 l
- On-board power supply voltage: 12 v
- Generator: three-phase AC / 2520 W
- Ignition system: electronic mapped ignition
- Fuel tank capacity/of which reserve: 80 / 9.0 l
- Fuel tank (location): in front of rear axle
- Front-wheel suspension (type): independent suspension
- Front axle: multi-link independent suspension
- Rear-wheel suspension (type): independent suspension
- Rear axle: multi-link independent suspension
- Suspension front / rear: air suspension, damper with damping valve, torsion bar stabilizer / air suspension, damper with damping valve, torsion bar stabilizer
- Steering (type): rack-and-pinion
- Steering assistance: hydraulically, speed-dependent
- Brakes front: discs, internally ventilated
- Rear brakes: discs, internally ventilated
- Front brake caliper: fixed caliper
- Rear brake caliper: floating caliper
- Disc or drum diameter front : 344 mm
- Disc or drum diameter rear: 320 mm
- Parking brake (actuation): mechanically, foot-operated parking brake (manual release)
- Front rims: 8 J x 17
- Rear rims: 8 J x 17
- Front tyres: 245/45 R17
- Rear tyres: 245/45 R17
- Drive: rear wheel drive
- Transmission: automatic
- Gearbox type designation: 7G-TRONIC
- Availability: as standard
- Clutch: hydraulic torque converter with lock-up clutch (governed)
- Gearbox design: epicyclic gear system
- 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: 2.47
- Maximum speed: 250 km/h (electronically limited)
- Acceleration 0-100 kpm: 5.2 s
- Fuel consumption urban / extra-urban / combined (according to the respectively valid measurement and calculation methods): 16.2-16.7 / 7.7-8.0 / 10.8-11.2 l per 100 km (premium petrol)
- Wheelbase: 2874 mm
- Front track gauge: 1580 mm
- Rear track gauge: 1599 mm
- Vehicle length: 4868 mm
- Vehicle width: 1854 mm
- Vehicle height: 1447 mm
- Turning circle diameter: 11.25 m
- Unladen weight (according to the respectively valid measurement or calculation methods): 1830 kg
- Permissible total weight: 2375 kg
- Permissible axle load front: 1145 kg
- Permissible axle load rear: 1275 kg
- Payload: 545 kg
- Permissible trailer load unbraked / braked: 750 / 2100 kg
- Units produced: 8,856
- Prices: 01.2009: EUR 67,532.50
07.2010: EUR 68,068.00
02.2011: EUR 68,633.25