Comparison Mercedes-Benz R-class (W251) R 500 V8 (306 Hp) 4MATIC 7G-TRONIC & Ford Shelby I Cobra GT 500 7.0 V8 (365 Hp) Automatic & Ford Falcon (FG) 4.0 DI-VCT Turbo (367 Hp)
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| Brand: | Mercedes-Benz | Ford | Ford |
| Model: | R-class | Shelby | Falcon |
| Generation: | R-class (W251) | Shelby I | Falcon (FG) |
| Engine / modification: | R 500 V8 (306 Hp) 4MATIC 7G-TRONIC | Cobra GT 500 7.0 V8 (365 Hp) Automatic | 4.0 DI-VCT Turbo (367 Hp) |
| Production start: | 2005 year | 1968 year | 2008 year |
| Production end: | 2007 year | 1970 year | 2011 year |
| Coupe type: | Combi | Coupe | Sedan |
| Powertrain Architecture: | Internal Combustion engine | ||
| Num. of Doors: | 5 | 2 | 4 |
| Num. of seats: | 6 | 4 | 5 |
| Fuel consumption / economy - urban: | 17.1 l/100 km | ||
| Fuel consumption / economy - extra urban: | 9 l/100 km | ||
| Fuel consumption / economy - combined: | 13.3 l/100 km | 12 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.47 | ||
| Fuel tank volume: | 80 l | 64 l | 68 l |
| Emission standard: | Euro 4 | ||
| CO2 emissions: | 317 g/km | ||
| Power: | 306 hp | 365 hp | 367 hp |
| Max power in: | 5600 rpm. | 5400 rpm. | 5250 rpm. |
| Maximum speed: | 245 km/h | ||
| Acceleration from 0 to 100 km/h: | 6.9 sec | ||
| Torque: | 460 Nm @ 2700-4750 rpm. | 569 Nm @ 3200 rpm. | 533 Nm @ 2000-4750 rpm. |
| Model Engine: | M 113.971 | Barra 270T | |
| Engine position: | Front, longitudinal | Front, longitudinal | |
| Engine displacement: | 4966 cm3 | 6997 cm3 | 3984 cm3 |
| Engine oil capacity: | 8.5 l | ||
| Coolant: | 10.1-13 l | ||
| Fuel System: | Multi-point injection | Carburettor | |
| Position of cylinders: | V engine | V engine | |
| Valvetrain: | SOHC | DOHC | |
| Number of cylinders: | 8 | 8 | 6 |
| Number of valves per cylinder: | 3 | 4 | 4 |
| Compression ratio: | 10 | 10.5 | 8.8 |
| Piston Stroke: | 84 mm | 101.19 mm | 99.31 mm |
| Cylinder Bore: | 97 mm | 104.9 mm | 92.26 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 7G-TRONIC | 3 | |
| Length: | 4922 mm | 4740 mm | 4970 mm |
| Width: | 1922 mm | 1801 mm | 1868 mm |
| Width with mirrors folded: | 1306 mm | ||
| Width including mirrors: | 2168 mm | 2100 mm | |
| Height: | 1661 mm | 1433 mm | |
| Wheelbase: | 2980 mm | 2743 mm | 2838 mm |
| Front track: | 1665 mm | 1476 mm | 1583 mm |
| Rear (Back) track: | 1658 mm | 1476 mm | 1598 mm |
| Front overhang: | 922 mm | 954 mm | |
| Rear overhang: | 1020 mm | 1179 mm | |
| Minimum volume of Luggage (trunk): | 550 l | 535 l | |
| Maximum amount of Luggage (trunk): | 1950 l | ||
| Front suspension: | Double wishbone | Double wishbone | |
| Rear suspension: | Independent, spring multi-link with stabilizer | ||
| Max weight: | 2865 kg | ||
| Front brakes: | Ventilated discs | Disc | Ventilated discs |
| Rear brakes: | Ventilated discs | Drum | Disc |
| Kerb Weight: | 2115 kg | 1575 kg | |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Hydraulic Steering | |
| Max. roof load: | 100 kg | ||
| Minimum turning circle (turning diameter): | 11.7 m | 11.6 m | 11 m |
| Permitted trailer load with brakes (12%): | 2100 kg | 1600 kg | |
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 255/55 R18; 255/50 R19 | 245/45 R17; 245/40 R18; 245/35 R19 | |
| Wheel rims size: | 8J x 18; 8J x 19 | 8J x 17; 8J x 18; 8J x 19 |