Comparison Kia Optima I (facelift 2003) 2.5 V6 (176 Hp) Automatic & Cadillac Eldorado XI 4.1 V8 (130 Hp) Automatic & Kia Optima IV 2.0 GDI (202 Hp) Plug-in Hybrid Automatic
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| Brand: | Kia | Cadillac | Kia |
| Model: | Optima | Eldorado | Optima |
| Generation: | Optima I (facelift 2003) | Eldorado XI | Optima IV |
| Engine / modification: | 2.5 V6 (176 Hp) Automatic | 4.1 V8 (130 Hp) Automatic | 2.0 GDI (202 Hp) Plug-in Hybrid Automatic |
| Production start: | 2003 year | 1986 year | 2016 year |
| Production end: | 2005 year | 1987 year | 2018 year |
| Coupe type: | Sedan | Coupe | Sedan |
| Num. of Doors: | 4 | 2 | 4 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - extra urban: | 4.4 l/100 km | ||
| Fuel consumption / economy - combined: | 1.33 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol / electricity |
| Drag coefficient: | 0.25 | ||
| Fuel tank volume: | 65 l | 68.1 l | |
| Emission standard: | Euro 6 | ||
| CO2 emissions: | 37 g/km | ||
| Power: | 176 hp | 130 hp | 154 hp |
| Max power in: | 6000 rpm. | 4200 rpm. | 6000 rpm. |
| Maximum speed: | 209 km/h | ||
| Torque: | 229 Nm @ 4000 rpm. | 189 Nm @ 5000 rpm. | |
| Model Engine: | HT 4100 | ||
| Engine position: | Front, longitudinal | Front, transverse | |
| Engine displacement: | 2494 cm3 | 4087 cm3 | 1999 cm3 |
| Engine oil capacity: | 4.5 l | 5.2 l | |
| Coolant: | 8.6 l | 11.5 l | |
| Fuel System: | Multi-point injection | Mono-point injection | Direct injection |
| Position of cylinders: | V engine | Inline | |
| Valvetrain: | DOHC | OHV | CVVT |
| Number of cylinders: | 6 | 8 | 4 |
| Number of valves per cylinder: | 4 | 2 | 4 |
| Compression ratio: | 10 | 9.5 | 13.5 |
| Piston Stroke: | 75 mm | 84 mm | 97 mm |
| Cylinder Bore: | 84 mm | 88 mm | 81 mm |
| Electric motor power: | 66 | ||
| Electric motor Torque: | 205 @ 0-2330 rpm. Nm | ||
| Battery capacity: | 9.8 kWh | ||
| ICE Torque: | 189 Nm/5000 rpm. | ||
| ICE power: | 154 hp | ||
| System power: | 202 Hp @ 6 hp/ rpm. | ||
| System torque: | 375 Nm @ 2 Nm/ rpm. | ||
| Wheel Drive: | Front wheel drive | Front wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 4 | 4 | 6 |
| Length: | 4745 mm | 4780 mm | 4855 mm |
| Width: | 1815 mm | 1822 mm | 1860 mm |
| Height: | 1420 mm | 1365 mm | 1465 mm |
| Wheelbase: | 2700 mm | 2743 mm | 2805 mm |
| Front track: | 1540 mm | 1522 mm | |
| Rear (Back) track: | 1530 mm | 1522 mm | |
| Ride height(clearance): | 135 mm | ||
| Minimum volume of Luggage (trunk): | 385 l | 307 l | |
| Front suspension: | Wishbone | Independent, Spring McPherson, with stabilizer | |
| Rear suspension: | Helical spring | Multi-link independent | |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Disc |
| Kerb Weight: | 1450 kg | 1526 kg | 1780-1880 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Hydraulic Steering | Electric Steering |
| Max. roof load: | 100 kg | ||
| Minimum turning circle (turning diameter): | 10.4 m | 12.8 m | 10.9 m |
| Tire size: | 205/60 R15 | 205/70 R14; 215/60 R15 | 215/55 R17 |
| Wheel rims size: | R15 | 5.5J x 14; 6J x 15 | 7.0J x 17 |