Comparison BMW 7 Series (E66, facelift 2005) 730Li (258 Hp) Steptronic & Porsche 914 2.0 (127 Hp) & Audi A3 Cabrio (8V) 1.4 TFSI COD ultra (150 Hp) S-tronic
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| Brand: | BMW | Porsche | Audi |
| Model: | 7 Series | 914 | A3 |
| Generation: | 7 Series (E66, facelift 2005) | 914 | A3 Cabrio (8V) |
| Engine / modification: | 730Li (258 Hp) Steptronic | 2.0 (127 Hp) | 1.4 TFSI COD ultra (150 Hp) S-tronic |
| Production start: | 2005 year | 1969 year | 2014 year |
| Production end: | 2008 year | 1972 year | 2016 year |
| Coupe type: | Sedan | Targa | Cabriolet |
| Num. of Doors: | 4 | 2 | 2 |
| Num. of seats: | 5 | 2 | 4 |
| Fuel consumption / economy - urban: | 14.6 l/100 km | 5.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.5 l/100 km | 3.8 l/100 km | |
| Fuel consumption / economy - combined: | 10.1 l/100 km | 10.9 l/100 km | 4.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.29 | 0.30 | |
| Fuel tank volume: | 88 l | 50 l | |
| Emission standard: | EURO IV | EURO VI | |
| CO2 emissions: | 114 g/km | ||
| Power: | 258 hp | 127 hp | 150 hp |
| Max power in: | 6600 rpm. | 5800 rpm. | 5000-6000 rpm. |
| Maximum speed: | 237 km/h | 200 km/h | 222 km/h |
| Acceleration from 0 to 100 km/h: | 7.9 sec | 8.9 sec | |
| Torque: | 300 Nm @ 2500-4000 rpm. | 177 Nm @ 4200 rpm. | 250 Nm/1500-3500 rpm. |
| Engine position: | Front, longitudinal | Middle, longitudinal | Front, transverse |
| Engine displacement: | 2996 cm3 | 1991 cm3 | 1395 cm3 |
| Engine oil capacity: | 4.5 l | ||
| Fuel System: | Multi-point injection | Direct injection | |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | ||
| Position of cylinders: | Inline | Boxer | Inline |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 6 | 6 | 4 |
| Number of valves per cylinder: | 4 | 2 | 4 |
| Compression ratio: | 10.7 | 8.6 | 10 |
| Piston Stroke: | 88 mm | 66 mm | 80 mm |
| Cylinder Bore: | 85 mm | 80 mm | 74.5 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 6 Steptronic | 7 S-tronic | |
| Number of Gears (manual transmission): | 5 | ||
| Length: | 5179 mm | 3988 mm | 4421 mm |
| Width: | 1902 mm | 1592 mm | 1793 mm |
| Width including mirrors: | 1960 mm | ||
| Height: | 1484 mm | 1220 mm | 1409 mm |
| Wheelbase: | 3130 mm | 2451 mm | 2595 mm |
| Front track: | 1578 mm | 1341 mm | 1555 mm |
| Rear (Back) track: | 1596 mm | 1379 mm | 1526 mm |
| Front overhang: | 869 mm | ||
| Rear overhang: | 957 mm | ||
| Minimum volume of Luggage (trunk): | 500 l | 320 l | |
| Maximum amount of Luggage (trunk): | 678 l | ||
| Front suspension: | The depreciated rack | Torsion | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Helical spring | Independent, spring | Multi-link independent |
| Max weight: | 2415 kg | 1260 kg | 1880 kg |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Disc | Disc | |
| Kerb Weight: | 1835 kg | 940 kg | 1380 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | |
| Permitted trailer load with brakes (8%): | 1700 kg | ||
| Minimum turning circle (turning diameter): | 12.6 m | 10.9 m | |
| Permitted trailer load with brakes (12%): | 1500 kg | ||
| Permitted trailer load without brakes: | 720 kg | ||
| Permitted towbar download: | 75 kg | ||
| Tire size: | 245/55 R17 | 165 R15 | 205/55 R16 |
| Wheel rims size: | R17 | 5.5J x 15 | 7J x 16 |