Comparison Porsche 911 (997, facelift 2008) Turbo 3.8 (500 Hp) & BMW Z4 (E89) 30i (258 Hp) sDrive
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| Brand: | Porsche | BMW |
| Model: | 911 | Z4 |
| Generation: | 911 (997, facelift 2008) | Z4 (E89) |
| Engine / modification: | Turbo 3.8 (500 Hp) | 30i (258 Hp) sDrive |
| Production start: | 2009 year | 2009 year |
| Production end: | 2011 year | 2011 year |
| Coupe type: | Coupe | Cabriolet |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 4 | 2 |
| Fuel consumption / economy - urban: | 16.5 l/100 km | 12.4 l/100 km |
| Fuel consumption / economy - extra urban: | 8.3 l/100 km | 6.2 l/100 km |
| Fuel consumption / economy - combined: | 11.6 l/100 km | 8.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | |
| Fuel tank volume: | 67 l | 55 l |
| Emission standard: | Euro 5 | Euro 5 |
| CO2 emissions: | 272 g/km | |
| Power: | 500 hp | 258 hp |
| Max power in: | 6000-6500 rpm. | 6600 rpm. |
| Maximum speed: | 312 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 3.7 sec | 5.8 sec |
| Torque: | 650 Nm @ 1950-5000 rpm. | 315 Nm @ 2500 rpm. |
| Model Engine: | MA1.70 | N52B30 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3800 cm3 | 2996 cm3 |
| Engine oil capacity: | 7.5 l | 6.5 l |
| Coolant: | 29-32 l | 8.2 l |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Turbocharger | |
| Position of cylinders: | Boxer | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 9.8 | 10.7 |
| Piston Stroke: | 88 mm | |
| Cylinder Bore: | 85 mm | |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (manual transmission): | 6 | 6 |
| Length: | 4450 mm | 4239 mm |
| Width: | 1852 mm | 1790 mm |
| Width including mirrors: | 1952 mm | |
| Height: | 1300 mm | 1291 mm |
| Wheelbase: | 2350 mm | 2496 mm |
| Front track: | 1511 mm | |
| Rear (Back) track: | 1537 mm | |
| Minimum volume of Luggage (trunk): | 180 l | |
| Maximum amount of Luggage (trunk): | 105 l | 310 l |
| Front suspension: | McPherson | The depreciated rack |
| Rear suspension: | Multi-link independent | Helical spring |
| Max weight: | 1935 kg | 1745 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 1570 kg | 1490 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 10.9 m | 9.8 m |
| Tire size: | 235/35 ZR19; 305/30 ZR19 | 225/45 R17 |
| Wheel rims size: | 8.5J x 19; 11J x 19 | 8J x 17 |