Comparison Porsche 911 Cabriolet (991 II) Carrera 4 GTS 3.0 (450 Hp) & Porsche 911 Speedster Concept 4.0 V6 (510 Hp)
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| Brand: | Porsche | Porsche |
| Model: | 911 | 911 |
| Generation: | 911 Cabriolet (991 II) | 911 Speedster Concept |
| Engine / modification: | Carrera 4 GTS 3.0 (450 Hp) | 4.0 V6 (510 Hp) |
| Production start: | 2017 year | 2019 year |
| Production end: | 2018 year | |
| Coupe type: | Cabriolet | Roadster |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 2+2 | 2 |
| Fuel consumption / economy - urban: | 13.3 l/100 km | 26.6 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 9.9 l/100 km |
| Fuel consumption / economy - combined: | 9.7 l/100 km | 13.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 67 l | 64 l |
| Emission standard: | Euro 6 | EURO VId-Temp |
| CO2 emissions: | 220 g/km | 317 g/km |
| Power: | 450 hp | 510 hp |
| Max power in: | 6500 rpm. | 8400 rpm. |
| Maximum speed: | 308 km/h | 310 km/h |
| Acceleration from 0 to 100 km/h: | 4.1 sec | 4 sec |
| Acceleration from 0 to 200 km/h: | 14.1 sec | |
| Torque: | 550 Nm @ 2150-5000 rpm. | 470 Nm @ 6250 rpm. |
| Model Engine: | MDC.JA | |
| Engine position: | Rear, longitudinal | Rear, longitudinal |
| Engine displacement: | 2981 cm3 | 3996 cm3 |
| Engine oil capacity: | 8 l | |
| Fuel System: | Direct injection | Direct injection |
| Maximum engine speed: | 7500 rpm. | |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | Boxer | Boxer |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | |
| Piston Stroke: | 76.4 mm | 81.5 mm |
| Cylinder Bore: | 91 mm | 102 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (manual transmission): | 7 | 6 |
| Length: | 4528 mm | 4562 mm |
| Width: | 1852 mm | 1852 mm |
| Width including mirrors: | 1978 mm | 1978 mm |
| Height: | 1293 mm | 1250 mm |
| Wheelbase: | 2450 mm | 2457 mm |
| Front track: | 1539 mm | 1551 mm |
| Rear (Back) track: | 1544 mm | 1555 mm |
| Maximum amount of Luggage (trunk): | 285 l | 125 l |
| Front suspension: | Independent type McPherson | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Multi-link independent | Independent, spring multi-link with stabilizer |
| Max weight: | 2000 kg | 1793 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1565 kg | 1465 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 11.1 m | |
| Tire size: | 245/35 ZR 20; 305/30 ZR 20 | 245/35 ZR20 91Y; 305/30 ZR20 103XL |
| Wheel rims size: | 9J x 20; 12J x 20 | 9J x 20; 12J x 20 |