- Combustion principle: four-stroke petrol engine
- Exhaust-gas treatment: catalytic converter
- Arrangement: front
- Installation direction: longitudinally; over axle
- Engine designation / type: M 273 E 46 / 273.922
- Number of cylinders / arrangement: 8 / 90° V
- Bore: 92.9 mm
- Stroke: 86.0 mm
- Displacement : 4663 cc
- Compression ratio: 10.5
- Rated power: 250 kW / 340 DIN/hp at 6000 rpm
- Nominal torque: 460 Nm at 2700 - 5000 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, 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 measurement
- Injection pump (type): electric delivery pump
- Coolant / filling quantity with heating: 14.8 l
- Oil change quantity (with filter): 8.5 l
- On-board power supply voltage: 12 v
- Battery capacity: 35 + 70 Ah
- Generator: three-phase AC / 2520 w
- Ignition system: electronic mapped ignition
- Fuel tank capacity/of which reserve: 90 / 11.0 l
- Fuel tank (location): above the rear axle
- Front-wheel suspension (type): independent suspension
- Front axle: four-link suspension
- Rear-wheel suspension (type): independent suspension
- Rear axle: multi-link suspension
- Suspension front / rear: air suspension, gas-pressure shock absorbers with Adaptive Damping System, torsion bar / air suspension, gas-pressure shock absorbers with Adaptive Damping System, torsion bar
- Steering (type): rack-and-pinion
- Steering assistance: hydraulically assisted, speed-dependent
- Brakes front: discs, internally ventilated and perforated
- Rear brakes: discs, internally ventilated
- Disc or drum diameter front : 350 mm
- Disc or drum diameter rear: 320 mm
- Parking brake (actuation): electrical (operated via push button)
- Front rims: 8.0 J x 17
- Rear rims: 8.0 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
- Availability: as standard
- Clutch: hydraulic torque converter with lock-up clutch (governed)
- Gearbox design: planetary gear group
- 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: 5.9 s
- Fuel consumption urban / extra-urban / combined (according to the respectively valid measurement and calculation methods): 16.6-16.8 / 8.2-8.4 / 11.3-11.5 l per 100 km (premium petrol)
- Wheelbase: 3165 mm
- Front track gauge: 1604 mm
- Rear track gauge: 1606 mm
- Vehicle length: 5206 mm
- Vehicle width: 1871 mm
- Vehicle height: 1473 mm
- Turning circle diameter: 12.20 m
- Unladen weight (according to the respectively valid measurement or calculation methods): 1985 kg
- Permissible total weight: 2565 kg
- Permissible axle load front: 1290 kg
- Permissible axle load rear: 1335 kg
- Payload: 580 kg
- Permissible trailer load unbraked / braked: 750 / 2100 kg
- Units produced: not separately documented
- Prices: 09.2006: EUR 84,912.00
07.2007: EUR 88,417.00
07.2008: EUR 90,083.00
01.2009: EUR 91,570.50