Comparison Alpina B5 Sedan (G30, facelift 2020) GT 4.4 V8 (634 Hp) AWD Switch-Tronic & Porsche 911 Cabriolet (992) Carrera S 3.0 (450 Hp) PDK
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| Brand: | Alpina | Porsche |
| Model: | B5 | 911 |
| Generation: | B5 Sedan (G30, facelift 2020) | 911 Cabriolet (992) |
| Engine / modification: | GT 4.4 V8 (634 Hp) AWD Switch-Tronic | Carrera S 3.0 (450 Hp) PDK |
| Production start: | 2023 year | 2019 year |
| Coupe type: | Sedan | Cabriolet |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 2+2 |
| Fuel consumption / economy - urban: | 11.6 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | |
| Fuel consumption / economy - combined: | 9.1 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 68 l | 64 l |
| Combined fuel consumption (WLTP): | 11.6 l/100 km | |
| Emission standard: | Euro 6d-ISC-FCM | Euro 6d - TEMP |
| CO2 emissions: | 208 g/km | |
| Power: | 634 hp | 450 hp |
| Max power in: | 5500-6500 rpm. | 6500 rpm. |
| Maximum speed: | 330 km/h | 306 km/h |
| Acceleration from 0 to 100 km/h: | 3.4 sec | 3.7 sec |
| CO2 emissions (WLTP): | 263 g/km | |
| Torque: | 850 Nm @ 3500-5000 rpm. | 530 Nm @ 2300-5000 rpm. |
| Engine position: | Rear, longitudinal | |
| Engine displacement: | 4395 cm3 | 2981 cm3 |
| Fuel System: | Direct injection | |
| Maximum engine speed: | 7500 rpm. | |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | Boxer | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.5 | 10.2 |
| Piston Stroke: | 88.3 mm | 76.4 mm |
| Cylinder Bore: | 89 mm | 91 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 PDK | |
| Length: | 4978 mm | 4519 mm |
| Width: | 1868 mm | 1852 mm |
| Width including mirrors: | 2126 mm | 2024 mm |
| Height: | 1466 mm | 1299 mm |
| Wheelbase: | 2975 mm | 2450 mm |
| Front track: | 1611 mm | 1589 mm |
| Rear (Back) track: | 1596 mm | 1557 mm |
| Minimum volume of Luggage (trunk): | 530 l | 132 l |
| Maximum amount of Luggage (trunk): | 163 l | |
| Front suspension: | Independent type McPherson | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2520 kg | 2040 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2055 kg | 1585 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Permitted trailer load with brakes (12%): | 2000 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | Front wheel tires: 255/35 ZR20 | |
| Wheel rims size: | Front wheel rims: 8.5J x 20 | 8.5J x 19 ET52; 11; 5J x 20 ET67 |