2004 Kia Optima vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Kia Optima. In addition, the cost of maintenance, including insurance, on 2004 Kia Optima would be higher. At 2,398 cc (4 cylinders), 2004 Kia Optima is equipped with a bigger engine. In terms of performance, both vehicles can yield 138 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2004 Kia Optima weights approximately 271 kg more than 2007 Opel Astra.
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 (199 Nm) has 24 more torque (in Nm) than 2007 Opel Astra. (175 Nm). This means 2004 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2004 Kia Optima | 2007 Opel Astra | |
| Make | Kia | Opel |
| Model | Optima | Astra |
| Year Released | 2004 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2398 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 138 HP |
| Engine RPM | 3800 RPM | 5600 RPM |
| Torque | 199 Nm | 175 Nm |
| Engine Bore Size | 87 mm | 80.5 mm |
| Engine Stroke Size | 100 mm | 88.2 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1549 kg | 1278 kg |
| Vehicle Length | 4730 mm | 4300 mm |
| Vehicle Width | 1820 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2720 mm | 2620 mm |
| Fuel Consumption Highway | 7.8 L/100km | 6.2 L/100km |
| Fuel Consumption City | 10.7 L/100km | 11.3 L/100km |
| Fuel Consumption Overall | 9.4 L/100km | 7.3 L/100km |
| Fuel Tank Capacity | 65 L | 52 L |
