2000 Caterham C21 vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2000 Caterham C21. In addition, the cost of maintenance, including insurance, on 2000 Caterham C21 would be higher. At 2,172 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, both vehicles can yield 115 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. 2003 Opel Signum weights approximately 885 kg more than 2000 Caterham C21.
Because 2000 Caterham C21 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2000 Caterham C21. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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 (280 Nm @ 1500 RPM) has 135 more torque (in Nm) than 2000 Caterham C21. (145 Nm @ 3000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2000 Caterham C21.
Compare all specifications:
| 2000 Caterham C21 | 2003 Opel Signum | |
| Make | Caterham | Opel |
| Model | C21 | Signum |
| Year Released | 2000 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1588 cc | 2172 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 115 HP | 115 HP |
| Engine RPM | 6000 RPM | 3000 RPM |
| Torque | 145 Nm | 280 Nm |
| Torque RPM | 3000 RPM | 1500 RPM |
| Engine Bore Size | 80 mm | 84.1 mm |
| Engine Stroke Size | 79 mm | 98 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Front |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 650 kg | 1535 kg |
| Vehicle Length | 3810 mm | 4640 mm |
| Vehicle Width | 1590 mm | 1800 mm |
| Vehicle Height | 1060 mm | 1470 mm |
| Wheelbase Size | 2260 mm | 2840 mm |
