Comparison Kia K9 II (facelift 2021) 3.8 GDI V6 (315 Hp) AWD Automatic & Mercedes-Benz R-class (W251) R 500 4MATIC (388 Hp)
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| Brand: | Kia | Mercedes-Benz |
| Model: | K9 | R-class |
| Generation: | K9 II (facelift 2021) | R-class (W251) |
| Engine / modification: | 3.8 GDI V6 (315 Hp) AWD Automatic | R 500 4MATIC (388 Hp) |
| Production start: | 2021 year | 2007 year |
| Production end: | 2014 year | |
| Coupe type: | Sedan | Combi |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 13.7-14.3 l/100 km | 18.2-18.4 l/100 km |
| Fuel consumption / economy - extra urban: | 9.7-10 l/100 km | 9.8-10.0 l/100 km |
| Fuel consumption / economy - combined: | 11.9-12.2 l/100 km | 12.9-13.1 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 77 l | 80 l |
| Emission standard: | EURO V | |
| CO2 emissions: | 204-210 g/km | |
| Power: | 315 hp | 388 hp |
| Max power in: | 6000 rpm. | 6000 rpm. |
| Maximum speed: | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 6.1 sec | |
| Torque: | 397 Nm @ 5000 rpm. | 530 Nm/2800-4800 rpm. |
| Model Engine: | G6DJ | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3778 cm3 | 5461 cm3 |
| Fuel System: | Direct injection | Multi-point injection |
| Position of cylinders: | V engine | |
| Number of cylinders: | 6 | 8 |
| Compression ratio: | 10.7 | |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 | 7 |
| Length: | 5140 mm | 4922 mm |
| Width: | 1915 mm | 1922 mm |
| Height: | 1490 mm | 1674 mm |
| Wheelbase: | 3105 mm | 2980 mm |
| Front track: | 1629-1639 mm | 1661 mm |
| Rear (Back) track: | 1639-1659 mm | 1651 mm |
| Minimum volume of Luggage (trunk): | 550 l | |
| Maximum amount of Luggage (trunk): | 1950 l | |
| Front suspension: | Independent multi-link | Helical spring |
| Rear suspension: | Multi-link independent | Helical spring |
| Max weight: | 2840 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2000-2010 kg | 2220 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 11.8 m | |
| Tire size: | Front wheel tires: 245/45 R19 | 255/55 R 19 W |
| Wheel rims size: | R19 |