Comparison Mercedes-Benz C-class (W205, facelift 2018) C 300d (245 Hp) 4MATIC G-TRONIC & Opel Astra H 2.0i 16V Turbo (240 Hp) & Mercedes-Benz SL Roadster (W121) 190 SL (105 Hp)
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| Brand: | Mercedes-Benz | Opel | Mercedes-Benz |
| Model: | C-class | Astra | SL |
| Generation: | C-class (W205, facelift 2018) | Astra H | SL Roadster (W121) |
| Engine / modification: | C 300d (245 Hp) 4MATIC G-TRONIC | 2.0i 16V Turbo (240 Hp) | 190 SL (105 Hp) |
| Production start: | 2018 year | 2004 year | 1955 year |
| Production end: | 2021 year | 2009 year | 1963 year |
| Coupe type: | Sedan | Hatchback | Roadster |
| Num. of Doors: | 4 | 5 | 2 |
| Num. of seats: | 5 | 5 | 3 |
| Fuel consumption / economy - urban: | 6.2-6.8 l/100 km | 13.0 l/100 km | |
| Fuel consumption / economy - extra urban: | 4.7-5.1 l/100 km | 7.0 l/100 km | |
| Fuel consumption / economy - combined: | 5.3-5.7 l/100 km | 9.2 l/100 km | 8.6 l/100 km |
| Fuel consumption at Low speed (WLTP): | 5.6 l/100 km | ||
| Fuel Type: | Diesel | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | ||
| Fuel tank volume: | 41 l | 52 l | 65 l |
| Fuel consumption at very high speed (WLTP): | 6.5 l/100 km | ||
| Emission standard: | Euro 6 | ||
| CO2 emissions: | 139-151 g/km | ||
| Power: | 245 hp | 240 hp | 105 hp |
| Max power in: | 5600 rpm. | 5700 rpm. | |
| Maximum speed: | 250 km/h | 244 km/h | 173 km/h |
| Acceleration from 0 to 100 km/h: | 5.7 sec | 6.4 sec | |
| CO2 emissions (WLTP): | 148-171 g/km | ||
| Torque: | 500 Nm @ 1600-2400 rpm. | 320 Nm | 142 Nm @ 3200 rpm. |
| Model Engine: | OM 654.920 | Z20LEH | M 121 B II |
| Engine position: | Front, longitudinal | Front, transverse | Front, longitudinal |
| Engine displacement: | 1950 cm3 | 1998 cm3 | 1897 cm3 |
| Engine oil capacity: | 6.0 l | 5.0 l | 4 l |
| Coolant: | 10.0 l | 10 l | |
| Fuel System: | Diesel Commonrail | Multi-point injection | Carburettor |
| Maximum engine speed: | 6000 rpm. | ||
| Aspiration / Turbine: | Turbocharger | Turbocharging | |
| Position of cylinders: | Inline | Inline | Inline |
| Number of cylinders: | 4 | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 | 2 |
| Compression ratio: | 8.8 | 8.5 | |
| Piston Stroke: | 86 mm | 83.6 mm | |
| Cylinder Bore: | 86 mm | 85 mm | |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 9 G-TRONIC | - | |
| Number of Gears (manual transmission): | 6 | 4 | |
| Length: | 4686 mm | 4249 mm | 4220 mm |
| Width: | 1810 mm | 1753 mm | 1740 mm |
| Width including mirrors: | 2033 mm | ||
| Height: | 1442 mm | 1467 mm | 1320 mm |
| Wheelbase: | 2840 mm | 2614 mm | 2400 mm |
| Front track: | 1588 mm | 1488 mm | 1430 mm |
| Rear (Back) track: | 1488 mm | 1470 mm | |
| Ride height(clearance): | 92 mm | 160 mm | 155 mm |
| Approach angle: | 13.6 ° | ||
| Departure angle: | 14.2 ° | ||
| Front overhang: | 790 mm | 871 mm | |
| Rear overhang: | 1056 mm | 764 mm | |
| Minimum volume of Luggage (trunk): | 380 l | ||
| Maximum amount of Luggage (trunk): | 1330 l | ||
| Front suspension: | The depreciated rack | Double wishbone | |
| Rear suspension: | The depreciated rack | dependent spring suspension | |
| Max weight: | 2285 kg | 1860 kg | 1400 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Drum |
| Rear brakes: | Ventilated discs | Disc | Drum |
| Kerb Weight: | 1630 kg | 1385 kg | 1140 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | ||
| Minimum turning circle (turning diameter): | 11 m | ||
| Permitted trailer load with brakes (12%): | 1800 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 215/45 R17 | ||
| Wheel rims size: | 7J x17 | R13 |