2004 Kia Optima vs. 2003 Opel Vectra
To start off, 2004 Kia Optima is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2003 Opel Vectra would be higher. At 2,671 cc (6 cylinders), 2004 Kia Optima is equipped with a bigger engine. In terms of performance, 2004 Kia Optima (170 HP @ 4000 RPM) has 17 more horse power than 2003 Opel Vectra. (153 HP @ 5600 RPM). In normal driving conditions, 2004 Kia Optima should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 23 kg more than 2004 Kia Optima.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2004 Kia Optima (245 Nm) has 16 more torque (in Nm) than 2003 Opel Vectra. (229 Nm). This means 2004 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Vectra.
Compare all specifications:
| 2004 Kia Optima | 2003 Opel Vectra | |
| Make | Kia | Opel |
| Model | Optima | Vectra |
| Year Released | 2004 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 2172 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 153 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 245 Nm | 229 Nm |
| Engine Bore Size | 87 mm | 86 mm |
| Engine Stroke Size | 75 mm | 94.6 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1487 kg | 1510 kg |
| Vehicle Length | 4730 mm | 4830 mm |
| Vehicle Width | 1820 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1510 mm |
