Comparison Opel Commodore B Coupe 2.8 SC (129 Hp) & Opel Zafira B (facelift 2008) 1.8 XER (140 Hp) ecoFLEX & Audi R8 Coupe 4.2 FSI V8 (420 Hp) quattro R tronic
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| Brand: | Opel | Opel | Audi |
| Model: | Commodore | Zafira | R8 |
| Generation: | Commodore B Coupe | Zafira B (facelift 2008) | R8 Coupe |
| Engine / modification: | 2.8 SC (129 Hp) | 1.8 XER (140 Hp) ecoFLEX | 4.2 FSI V8 (420 Hp) quattro R tronic |
| Production start: | 1975 year | 2009 year | 2006 year |
| Production end: | 1976 year | 2010 year | 2010 year |
| Coupe type: | Coupe | Minivan | Coupe |
| Num. of Doors: | 2 | 5 | 2 |
| Num. of seats: | 5 | 5/7 | 2 |
| Fuel consumption / economy - urban: | 9.9 l/100 km | 20.4 l/100 km | |
| Fuel consumption / economy - extra urban: | 6 l/100 km | 9.6 l/100 km | |
| Fuel consumption / economy - combined: | 7.4 l/100 km | 13.6 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.45 | 0.31 | 0.34 |
| Fuel tank volume: | 70 l | 58 l | 75 l |
| Emission standard: | EURO V | Euro 4 | |
| CO2 emissions: | 177 g/km | ||
| Power: | 129 hp | 140 hp | 420 hp |
| Max power in: | 5000 rpm. | 6300 rpm. | 7800 rpm. |
| Maximum speed: | 184 km/h | 197 km/h | 301 km/h |
| Acceleration from 0 to 100 km/h: | 11.5 sec | 11.5 sec | 4.6 sec |
| Torque: | 204 Nm @ 3800 rpm. | 175 Nm/3800 rpm. | 430 Nm @ 4500-5500 rpm. |
| Model Engine: | BYH | ||
| Engine position: | Front, transverse | Rear, longitudinal | |
| Engine displacement: | 2784 cm3 | 1796 cm3 | 4163 cm3 |
| Fuel System: | Carburettor | Multi-point injection | Direct injection |
| Maximum engine speed: | 8250 rpm. | ||
| Position of cylinders: | Inline | Inline | V engine |
| Valvetrain: | SOHC | DOHC | |
| Number of cylinders: | 6 | 4 | 8 |
| Number of valves per cylinder: | 2 | 4 | 4 |
| Compression ratio: | 9 | 10.5 | 12.5 |
| Piston Stroke: | 69.8 mm | 88.2 mm | 92.8 mm |
| Cylinder Bore: | 92 mm | 80.5 mm | 84.5 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 6 R tronic | ||
| Number of Gears (manual transmission): | 4 | 5 | |
| Length: | 4607 mm | 4467 mm | 4431 mm |
| Width: | 1728 mm | 2025 mm | 1904 mm |
| Width including mirrors: | 2029 mm | ||
| Height: | 1370 mm | 1635 mm | 1252 mm |
| Wheelbase: | 2668 mm | 2703 mm | 2650 mm |
| Front track: | 1434 mm | 1488 mm | 1638 mm |
| Rear (Back) track: | 1400 mm | 1512 mm | 1595 mm |
| Ride height(clearance): | 140 mm | ||
| Front overhang: | 999 mm | ||
| Rear overhang: | 782 mm | ||
| Minimum volume of Luggage (trunk): | 434 l | 540 l | 100 l |
| Maximum amount of Luggage (trunk): | 1820 l | ||
| Front suspension: | Independent, Spring McPherson, with stabilizer | ||
| Rear suspension: | Independent, spring multi-link with stabilizer | ||
| Max weight: | 1630 kg | 2075 kg | 1865 kg |
| Front brakes: | Disc | Ventilated discs | Ventilated discs |
| Rear brakes: | Drum | Disc | Ventilated discs |
| Kerb Weight: | 1210 kg | 1503 kg | 1565 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Minimum turning circle (turning diameter): | 11.2 m | 11.5 m | 11.8 m |
| Tire size: | 225/45 R17 | 235/40 R18; 285/35 R18 | |
| Wheel rims size: | R17 | 8.5J x 18; 10.5J x 18 |