Comparison Proton X70 1.8 TGDI (184 Hp) AWD Automatic & Buick Regal I Sedan 3.8 V6 (112 Hp) & Alpina B4 Coupe (facelift 2017) S 3.0 (440 Hp) Switch-Tronic
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| Brand: | Proton | Buick | Alpina |
| Model: | X70 | Regal | B4 |
| Generation: | X70 | Regal I Sedan | B4 Coupe (facelift 2017) |
| Engine / modification: | 1.8 TGDI (184 Hp) AWD Automatic | 3.8 V6 (112 Hp) | S 3.0 (440 Hp) Switch-Tronic |
| Production start: | 2018 year | 1973 year | 2017 year |
| Production end: | 1977 year | ||
| Coupe type: | SUV | Sedan | Coupe |
| Num. of Doors: | 5 | 4 | 2 |
| Num. of seats: | 5 | 5 | 4 |
| Fuel consumption / economy - urban: | 10.9 l/100 km | ||
| Fuel consumption / economy - extra urban: | 6.2 l/100 km | ||
| Fuel consumption / economy - combined: | 7.9 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.50 | ||
| Fuel tank volume: | 60 l | 83 l | 60 l |
| Emission standard: | Euro 6 | ||
| CO2 emissions: | 180 g/km | ||
| Power: | 184 hp | 112 hp | 440 hp |
| Max power in: | 5500 rpm. | 4000 rpm. | 5500-6250 rpm. |
| Maximum speed: | 306 km/h | ||
| Acceleration from 0 to 100 km/h: | 4.2 sec | ||
| Torque: | 285 Nm @ 1700-4400 rpm. | 237 Nm @ 2000 rpm. | 660 Nm @ 3000-4500 rpm. |
| Engine position: | Front, transverse | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1799 cm3 | 3791 cm3 | 2979 cm3 |
| Engine oil capacity: | 4.7 l | ||
| Coolant: | 14.5 l | ||
| Fuel System: | Direct injection | Carburettor | Direct injection |
| Aspiration / Turbine: | Turbocharger | BiTurbo | |
| Position of cylinders: | Inline | V engine | Inline |
| Valvetrain: | DOHC | OHV | |
| Number of cylinders: | 4 | 6 | 6 |
| Number of valves per cylinder: | 4 | 2 | 4 |
| Compression ratio: | 8 | 10.2 | |
| Piston Stroke: | 86.36 mm | 89.6 mm | |
| Cylinder Bore: | 96.52 mm | 84 mm | |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 | 8 Switch-Tronic | |
| Number of Gears (manual transmission): | 3 | ||
| Length: | 4519 mm | 5486 mm | 4640 mm |
| Width: | 1831 mm | 2007 mm | 1825 mm |
| Height: | 1694 mm | 1374 mm | 1373 mm |
| Wheelbase: | 2670 mm | 2946 mm | 2810 mm |
| Front track: | 1562 mm | 1562 mm | 1552 mm |
| Rear (Back) track: | 1557 mm | 1542 mm | 1576 mm |
| Ride height(clearance): | 145 mm | ||
| Minimum volume of Luggage (trunk): | 413 l | 445 l | |
| Front suspension: | Independent type McPherson | ||
| Rear suspension: | Independent, spring multi-link with stabilizer | ||
| Max weight: | 2135 kg | ||
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Drum | Ventilated discs |
| Kerb Weight: | 1725 kg | 1787 kg | 1690 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.0 m | 13.8 m | |
| Permitted trailer load with brakes (12%): | 1700 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 225/60 R18 | 185/75 R14; 195/70 R14; 205/65 R14; 215/60 R14; 195/70 R14 | 245/30 ZR20; 265/30 ZR20 |
| Wheel rims size: | R18 | R14 | 8J x 20; 9J x 20 |