Comparison Mercedes-Benz B-class (W247) B 220d (190 Hp) DCT & Mercedes-Benz SL (R231) AMG SL 63 (537 Hp) SPEEDSHIFT & Mercedes-Benz W188 I Roadster 300 S (150 Hp)
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| Brand: | Mercedes-Benz | Mercedes-Benz | Mercedes-Benz |
| Model: | B-class | SL | W188 |
| Generation: | B-class (W247) | SL (R231) | W188 I Roadster |
| Engine / modification: | B 220d (190 Hp) DCT | AMG SL 63 (537 Hp) SPEEDSHIFT | 300 S (150 Hp) |
| Production start: | 2018 year | 2012 year | 1952 year |
| Production end: | 2015 year | 1955 year | |
| Coupe type: | Hatchback | Roadster | Roadster |
| Num. of Doors: | 5 | 2 | 2 |
| Num. of seats: | 5 | 2 | 4 |
| Fuel consumption / economy - urban: | 5.3-5.5 l/100 km | 13.9 l/100 km | |
| Fuel consumption / economy - extra urban: | 3.8-4.0 l/100 km | 7.6 l/100 km | 13.8 l/100 km |
| Fuel consumption / economy - combined: | 4.4-4.5 l/100 km | 9.9 l/100 km | |
| Fuel consumption at Low speed (WLTP): | 4.9 l/100 km | ||
| Fuel Type: | Diesel | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 43 l | 75 l | 85 l |
| Fuel consumption at very high speed (WLTP): | 5.6 l/100 km | ||
| Emission standard: | Euro 6d | Euro 5 | |
| CO2 emissions: | 116-119 g/km | 231 g/km | |
| Power: | 190 hp | 537 hp | 150 hp |
| Max power in: | 5500 rpm. | 5000 rpm. | |
| Maximum speed: | 234 km/h | 250 km/h | 175 km/h |
| Acceleration from 0 to 100 km/h: | 7.2 sec | 4.3 sec | 15 sec |
| CO2 emissions (WLTP): | 129-147 g/km | ||
| Torque: | 400 Nm @ 1600-2600 rpm. | 800 Nm @ 2000-4500 rpm. | 230 Nm @ 3800 rpm. |
| Model Engine: | OM 654.920 | M 188.920 | |
| Engine position: | Front, transverse | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1950 cm3 | 5461 cm3 | 2996 cm3 |
| Engine oil capacity: | 6.8 l | 7.5 l | |
| Coolant: | 10 l | 19.5 l | |
| Fuel System: | Diesel Commonrail | Direct injection | Carburettor |
| Aspiration / Turbine: | Turbocharger / Intercooler | BiTurbo | |
| Position of cylinders: | Inline | V engine | Inline |
| Valvetrain: | SOHC | ||
| Number of cylinders: | 4 | 8 | 6 |
| Number of valves per cylinder: | 4 | 2 | |
| Compression ratio: | 10 | 7.8 | |
| Piston Stroke: | 88 mm | ||
| Cylinder Bore: | 85 mm | ||
| Wheel Drive: | Front wheel drive | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 DCT | AMG SPEEDSHIFT MCT 7G Sport | |
| Number of Gears (manual transmission): | 4 | ||
| Length: | 4419 mm | 4617 mm | 4730 mm |
| Width: | 1796 mm | 1877 mm | 1910 mm |
| Height: | 1562 mm | 1315 mm | 1510 mm |
| Wheelbase: | 2729 mm | 2585 mm | 2900 mm |
| Front track: | 1567 mm | 1600 mm | 1480 mm |
| Rear (Back) track: | 1604 mm | 1525 mm | |
| Approach angle: | 13.4 ° | ||
| Departure angle: | 17.2 ° | ||
| Front overhang: | 914 mm | ||
| Rear overhang: | 776 mm | ||
| Minimum volume of Luggage (trunk): | 445 l | 241 l | |
| Maximum amount of Luggage (trunk): | 1530 l | 381 l | |
| Front suspension: | Independent multi-link | ||
| Rear suspension: | Multi-link independent | Helical spring | |
| Max weight: | 2080 kg | 2180 kg | 2000 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Drum |
| Rear brakes: | Disc | Ventilated discs | Drum |
| Kerb Weight: | 1545 kg | 1845 kg | 1540 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Electric Steering | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.1 m | 12.5 m | |
| Permitted trailer load with brakes (12%): | 1600 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 255/35 ZR19; 285/30 ZR19 | ||
| Wheel rims size: | R19 | 15 |