2004 Opel Signum vs. 1987 Renault 21
To start off, 2004 Opel Signum is newer by 17 year(s). Which means there will be less support and parts availability for 1987 Renault 21. In addition, the cost of maintenance, including insurance, on 1987 Renault 21 would be higher. Both 2004 Opel Signum and 1987 Renault 21 are equipped with a 1,995 cc engine. In terms of performance, 1987 Renault 21 (175 HP @ 5200 RPM) has 2 more horse power than 2004 Opel Signum. (173 HP @ 5500 RPM) In normal driving conditions, 1987 Renault 21 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 370 kg more than 1987 Renault 21.
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, 1987 Renault 21 (270 Nm @ 3000 RPM) has 5 more torque (in Nm) than 2004 Opel Signum. (265 Nm @ 2500 RPM). This means 1987 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2004 Opel Signum | 1987 Renault 21 | |
| Make | Opel | Renault |
| Model | Signum | 21 |
| Year Released | 2004 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 173 HP | 175 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 265 Nm | 270 Nm |
| Torque RPM | 2500 RPM | 3000 RPM |
| Engine Bore Size | 86 mm | 88 mm |
| Engine Stroke Size | 86 mm | 82 mm |
| Engine Compression Ratio | 9.5:1 | 8.0:1 |
| Top Speed | 220 km/hour | 227 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1190 kg |
| Vehicle Length | 4640 mm | 4650 mm |
| Vehicle Width | 1800 mm | 1720 mm |
| Vehicle Height | 1470 mm | 1380 mm |
| Wheelbase Size | 2840 mm | 2610 mm |
