Comparison Mercedes-Benz R-class (W251) Long R 500 V8 (306 Hp) 4MATIC G-TRONIC & Cadillac ATS Sedan V 3.6 V6 (471 Hp) Automatic
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| Brand: | Mercedes-Benz | Cadillac |
| Model: | R-class | ATS |
| Generation: | R-class (W251) Long | ATS Sedan |
| Engine / modification: | R 500 V8 (306 Hp) 4MATIC G-TRONIC | V 3.6 V6 (471 Hp) Automatic |
| Production start: | 2006 year | 2016 year |
| Production end: | 2008 year | |
| Coupe type: | Combi | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 14.7 l/100 km | |
| Fuel consumption / economy - extra urban: | 9.8 l/100 km | |
| Fuel consumption / economy - combined: | 13.3 l/100 km | 12.4 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 80 l | 60.5 l |
| Emission standard: | EURO V | |
| CO2 emissions: | 317 g/km | |
| Power: | 306 hp | 471 hp |
| Max power in: | 5600 rpm. | 5850 rpm. |
| Maximum speed: | 245 km/h | 298 km/h |
| Acceleration from 0 to 100 km/h: | 7 sec | 4.2 sec |
| Torque: | 460 Nm @ 2700-4750 rpm. | 603 Nm @ 3500 rpm. |
| Model Engine: | LF4 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4966 cm3 | 3564 cm3 |
| Engine oil capacity: | 6.6 l | |
| Coolant: | 10.2 l | |
| Fuel System: | Multi-point injection | Direct injection |
| Maximum engine speed: | 6500 rpm. | |
| Aspiration / Turbine: | Twin-Turbo | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC-VVT | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 10.2 |
| Piston Stroke: | 84 mm | 85.6 mm |
| Cylinder Bore: | 97 mm | 94 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 7G-TRONIC | 8 Hydra-Matic |
| Length: | 5157 mm | 4673 mm |
| Width: | 1922 mm | 1811 mm |
| Height: | 1674 mm | 1415 mm |
| Wheelbase: | 3215 mm | 2775 mm |
| Front track: | 1661 mm | 1538 mm |
| Rear (Back) track: | 1651 mm | 1536 mm |
| Minimum volume of Luggage (trunk): | 295 l | |
| Maximum amount of Luggage (trunk): | 2385 l | |
| Front suspension: | Double wishbone | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Independent, spring multi-link with stabilizer | Multi-link independent |
| Max weight: | 2895 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2240 kg | 1729 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 12.4 m | 11.7 m |
| Permitted trailer load with brakes (12%): | 2100 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | 255/55 R19 W | 255/35 R18; 275/35 R18 |
| Wheel rims size: | R19 | 9J x 18; 9.5J x 18 |