2005 Kia Optima vs. 2003 Opel Signum
To start off, 2005 Kia Optima is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 3,175 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (209 HP @ 6200 RPM) has 39 more horse power than 2005 Kia Optima. (170 HP @ 4000 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2005 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 58 kg more than 2005 Kia Optima. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2003 Opel Signum (300 Nm) has 59 more torque (in Nm) than 2005 Kia Optima. (241 Nm). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Optima.
Compare all specifications:
| 2005 Kia Optima | 2003 Opel Signum | |
| Make | Kia | Opel |
| Model | Optima | Signum |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 3175 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 209 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 241 Nm | 300 Nm |
| Engine Bore Size | 87 mm | 87.5 mm |
| Engine Stroke Size | 75 mm | 88 mm |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1487 kg | 1545 kg |
| Vehicle Length | 4730 mm | 4640 mm |
| Vehicle Width | 1820 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2840 mm |
| Fuel Tank Capacity | 65 L | 60 L |
