Comparison BMW 8 Series (G15) 840i (340 Hp) Steptronic & Buick Century Wagon 2.2 i (122 Hp)
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| Brand: | BMW | Buick |
| Model: | 8 Series | Century |
| Generation: | 8 Series (G15) | Century Wagon |
| Engine / modification: | 840i (340 Hp) Steptronic | 2.2 i (122 Hp) |
| Production start: | 2019 year | 1993 year |
| Production end: | 2020 year | 1997 year |
| Coupe type: | Coupe | Combi |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 8.9-9.0 l/100 km | |
| Fuel consumption / economy - extra urban: | 6.3 l/100 km | |
| Fuel consumption / economy - combined: | 7.2-7.3 l/100 km | 9.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.29 | |
| Fuel tank volume: | 68 l | 63 l |
| Emission standard: | Euro 6d - TEMP | |
| CO2 emissions: | 164-167 g/km | |
| Power: | 340 hp | 122 hp |
| Max power in: | 5000-6500 rpm. | 5200 rpm. |
| Maximum speed: | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 5.0 sec | |
| Torque: | 500 Nm @ 1600-4500 rpm. | 176 Nm @ 4000 rpm. |
| Model Engine: | B58B30 | LN2 |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 2998 cm3 | 2190 cm3 |
| Engine oil capacity: | 6.5 l | 4.2 l |
| Coolant: | 8.2 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 11 | 9 |
| Piston Stroke: | 94.6 mm | 88 mm |
| Cylinder Bore: | 82 mm | 89 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 3 |
| Length: | 4843 mm | 4851 mm |
| Width: | 1902 mm | 1762 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1341 mm | 1377 mm |
| Wheelbase: | 2822 mm | 2664 mm |
| Front track: | 1627 mm | 1492 mm |
| Rear (Back) track: | 1642 mm | 1442 mm |
| Ride height(clearance): | 121 mm | |
| Front overhang: | 953 mm | |
| Rear overhang: | 1076 mm | |
| Minimum volume of Luggage (trunk): | 420 l | 1179 l |
| Maximum amount of Luggage (trunk): | 2106 l | |
| Front suspension: | Double wishbone | Wishbone |
| Rear suspension: | Multi-link independent | Helical spring |
| Max weight: | 2225 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Drum |
| Kerb Weight: | 1710 kg | 1419 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | Hydraulic Steering |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 11.6 m | |
| Tire size: | 245/45 R18 100Y XL; 275/40 R18 103Y XL | 185/75 R14 S |
| Wheel rims size: | 8J x 18; 9J x 18 | R14 |