Comparison Mercedes-Benz S-class (W221, facelift 2009) S 450 CDI V8 (320 Hp) G-TRONIC & BMW 4 Series Gran Coupe (G26) M440i (374 Hp) MHEV xDrive Steptronic
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| Brand: | Mercedes-Benz | BMW |
| Model: | S-class | 4 Series |
| Generation: | S-class (W221, facelift 2009) | 4 Series Gran Coupe (G26) |
| Engine / modification: | S 450 CDI V8 (320 Hp) G-TRONIC | M440i (374 Hp) MHEV xDrive Steptronic |
| Production start: | 2009 year | 2021 year |
| Production end: | 2010 year | |
| Coupe type: | Sedan | Coupe |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 13-13.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 6.9-7.1 l/100 km | |
| Fuel consumption / economy - combined: | 9.1-9.3 l/100 km | |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 90 l | 59 l |
| Emission standard: | Euro 6d | |
| CO2 emissions: | 240-245 g/km | |
| Power: | 320 hp | 374 hp |
| Max power in: | 3600 rpm. | 5500-6500 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 6.6 sec | 4.7 sec |
| CO2 emissions (WLTP): | 181-194 g/km | |
| Torque: | 730 Nm @ 2200 rpm. | 500 Nm @ 1900-5000 rpm. |
| Model Engine: | OM 629.911 | B58B30B |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3996 cm3 | 2998 cm3 |
| Engine oil capacity: | 10.5 l | 7.2 l |
| Fuel System: | Diesel Commonrail | Direct injection |
| Aspiration / Turbine: | Turbocharger / Intercooler | |
| Position of cylinders: | V engine | Inline |
| Valvetrain: | VALVETRONIC | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | |
| Compression ratio: | 17 | 10.2 |
| Piston Stroke: | 94.6 mm | |
| Cylinder Bore: | 82 mm | |
| Electric motor power: | 11 | |
| Battery capacity: | 0.528 kWh | |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7G-TRONIC | 8 Steptronic |
| Length: | 5096 mm | 4783 mm |
| Width: | 1871 mm | 1852 mm |
| Width including mirrors: | 2120 mm | |
| Height: | 1479 mm | 1442 mm |
| Wheelbase: | 3035 mm | 2856 mm |
| Front track: | 1600 mm | 1587 mm |
| Rear (Back) track: | 1606 mm | 1614 mm |
| Ride height(clearance): | 140 mm | |
| Front overhang: | 888 mm | |
| Rear overhang: | 1173 mm | |
| Minimum volume of Luggage (trunk): | 560 l | 470 l |
| Maximum amount of Luggage (trunk): | 1290 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2690 kg | 2380 kg |
| Front brakes: | Disc | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 2015 kg | 1825 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 11.8 m | 12 m |
| Permitted trailer load with brakes (12%): | 1800 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 255/45 R18 | 245/45 R18 100Y XL |
| Wheel rims size: | R18 | 8.5J x 18 |