Comparison BMW 8 Series Convertible (G14) 840d (320 Hp) xDrive Steptronic & Mercedes-Benz E-class (W210) E 220 CDI (125 Hp)
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| Brand: | BMW | Mercedes-Benz |
| Model: | 8 Series | E-class |
| Generation: | 8 Series Convertible (G14) | E-class (W210) |
| Engine / modification: | 840d (320 Hp) xDrive Steptronic | E 220 CDI (125 Hp) |
| Production start: | 2019 year | 1998 year |
| Production end: | 2020 year | 1999 year |
| Coupe type: | Cabriolet | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 7.3-7.4 l/100 km | 8.2 l/100 km |
| Fuel consumption / economy - extra urban: | 5.1-5.6 l/100 km | 5.1 l/100 km |
| Fuel consumption / economy - combined: | 5.9-6.3 l/100 km | |
| Fuel Type: | Diesel | Diesel |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 66 l | 65 l |
| Emission standard: | Euro 6d | |
| CO2 emissions: | 155-166 g/km | |
| Power: | 320 hp | 125 hp |
| Max power in: | 4400 rpm. | 4200 rpm. |
| Maximum speed: | 250 km/h | 198 km/h |
| Acceleration from 0 to 100 km/h: | 5.2 sec | 11 sec |
| Torque: | 680 Nm @ 1750-2250 rpm. | 300 Nm @ 1800 rpm. |
| Model Engine: | B57D30 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2993 cm3 | 2151 cm3 |
| Engine oil capacity: | 6.5 l | |
| Coolant: | 9.5 l | |
| Fuel System: | Diesel Commonrail | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | Turbocharging |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 16.5 | 19 |
| Piston Stroke: | 90 mm | 88.4 mm |
| Cylinder Bore: | 84 mm | 88 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | - |
| Number of Gears (manual transmission): | 5 | |
| Length: | 4843 mm | 4795 mm |
| Width: | 1902 mm | 1799 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1339 mm | 1433 mm |
| Wheelbase: | 2822 mm | 2833 mm |
| Front track: | 1619 mm | 1548 mm |
| Rear (Back) track: | 1642 mm | 1542 mm |
| Ride height(clearance): | 118 mm | |
| Minimum volume of Luggage (trunk): | 350 l | 520 l |
| Front suspension: | Double wishbone | Double wishbone |
| Rear suspension: | Multi-link independent | Helical spring |
| Max weight: | 2485 kg | 1990 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1955 kg | 1415 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.9 m | |
| Tire size: | 245/45 R18 100Y; 275/40 R18 103Y | 195/65 R15 |
| Wheel rims size: | 8J x 18; 9J x 18 |