Comparison BMW 4 Series Convertible (F33) 435i (306 Hp) Steptronic & Kia Optima I (facelift 2003) 2.0 (149 Hp)
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| Brand: | BMW | Kia |
| Model: | 4 Series | Optima |
| Generation: | 4 Series Convertible (F33) | Optima I (facelift 2003) |
| Engine / modification: | 435i (306 Hp) Steptronic | 2.0 (149 Hp) |
| Production start: | 2014 year | 2003 year |
| Production end: | 2016 year | 2005 year |
| Coupe type: | Cabriolet | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 10.8 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.6 l/100 km | |
| Fuel consumption / economy - combined: | 7.5 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | |
| Fuel tank volume: | 60 l | 65 l |
| Emission standard: | Euro 6 | |
| CO2 emissions: | 176 g/km | |
| Power: | 306 hp | 149 hp |
| Max power in: | 5800-6400 rpm. | 6000 rpm. |
| Maximum speed: | 250 km/h | 195 km/h |
| Acceleration from 0 to 100 km/h: | 5.5 sec | |
| Torque: | 400 Nm @ 1200-5000 rpm. | 193 Nm @ 4500 rpm. |
| Model Engine: | N55B30 | |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 2979 cm3 | 1997 cm3 |
| Engine oil capacity: | 6.5 l | 4.3 l |
| Coolant: | 7.2 l | 6.3 l |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.2 | 10 |
| Piston Stroke: | 89.6 mm | 88 mm |
| Cylinder Bore: | 84 mm | 85 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 5 | |
| Length: | 4638 mm | 4745 mm |
| Width: | 1825 mm | 1815 mm |
| Height: | 1384 mm | 1420 mm |
| Wheelbase: | 2810 mm | 2700 mm |
| Front track: | 1545 mm | 1540 mm |
| Rear (Back) track: | 1594 mm | 1530 mm |
| Ride height(clearance): | 130 mm | |
| Minimum volume of Luggage (trunk): | 220 l | 385 l |
| Maximum amount of Luggage (trunk): | 370 l | |
| Front suspension: | Independent, spring | Wishbone |
| Rear suspension: | Multi-link independent | Helical spring |
| Max weight: | 2210 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1750 kg | 1405 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.3 m | 10.4 m |
| Permitted trailer load with brakes (12%): | 1700 kg | |
| Permitted trailer load without brakes: | 745 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 225/50 R17 94W | 195/70 R14 |
| Wheel rims size: | 7.5J x 17 | R14 |