Comparison Kia Optima IV (facelift 2018) 2.4 GDI (185 Hp) Automatic & BMW X4 (G02) 30i (252 Hp) xDrive Steptronic
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| Brand: | Kia | BMW |
| Model: | Optima | X4 |
| Generation: | Optima IV (facelift 2018) | X4 (G02) |
| Engine / modification: | 2.4 GDI (185 Hp) Automatic | 30i (252 Hp) xDrive Steptronic |
| Production start: | 2018 year | 2018 year |
| Coupe type: | Sedan | SUV |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 9.4-9.8 l/100 km | 8.4-8.5 l/100 km |
| Fuel consumption / economy - extra urban: | 6.7-7.1 l/100 km | 6.4-6.7 l/100 km |
| Fuel consumption / economy - combined: | 8.1-8.7 l/100 km | 7.2-7.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.27 | 0.30 |
| Fuel tank volume: | 70 l | 65 l |
| Emission standard: | Euro 6 | |
| CO2 emissions: | 164-168 g/km | |
| Power: | 185 hp | 252 hp |
| Max power in: | 6000 rpm. | 5200-6500 rpm. |
| Maximum speed: | 240 km/h | |
| Acceleration from 0 to 100 km/h: | 6.3 sec | |
| Torque: | 241 Nm @ 4000 rpm. | 350 Nm @ 1450-4800 rpm. |
| Model Engine: | B48B20 | |
| Engine position: | Front, transverse | Front, longitudinal |
| Engine displacement: | 2359 cm3 | 1998 cm3 |
| Engine oil capacity: | 5.25 l | |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11.3 | 10.2 |
| Piston Stroke: | 97 mm | 94.6 mm |
| Cylinder Bore: | 88 mm | 82 mm |
| Wheel Drive: | Front wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 6 | 8 Steptronic |
| Length: | 4854 mm | 4752 mm |
| Width: | 1859 mm | 1918 mm |
| Width including mirrors: | 2138 mm | |
| Height: | 1466 mm | 1621 mm |
| Wheelbase: | 2804 mm | 2864 mm |
| Front track: | 1603-1613 mm | 1620 mm |
| Rear (Back) track: | 1610-1621 mm | 1666 mm |
| Ride height(clearance): | 135 mm | 204 mm |
| Front overhang: | 861 mm | |
| Rear overhang: | 1027 mm | |
| Wading depth: | 500 mm | |
| Minimum volume of Luggage (trunk): | 450 l | 525 l |
| Maximum amount of Luggage (trunk): | 1430 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Double wishbone |
| Rear suspension: | Independent, spring multi-link with stabilizer | Multi-link independent |
| Max weight: | 2400 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 1465-1496 kg | 1720 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 10.9 m | 12.1 m |
| Permitted trailer load with brakes (12%): | 2000 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 100 kg | |
| Tire size: | 205/65 R16; 215/55 R17; 235/45 R18 | 225/60 R18 |
| Wheel rims size: | 6.5J x 16; 7.0J x 17; 7.5J 18 | 7J x 18 |