1999 Opel Signum vs. 1986 Renault 21
To start off, 1999 Opel Signum is newer by 13 year(s). Which means there will be less support and parts availability for 1986 Renault 21. In addition, the cost of maintenance, including insurance, on 1986 Renault 21 would be higher. At 3,175 cc (6 cylinders), 1999 Opel Signum is equipped with a bigger engine. In terms of performance, 1999 Opel Signum (208 HP @ 6200 RPM) has 33 more horse power than 1986 Renault 21. (175 HP @ 5200 RPM). In normal driving conditions, 1999 Opel Signum should accelerate faster than 1986 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Signum weights approximately 265 kg more than 1986 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1986 Renault 21 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Opel Signum. In wet, icy, snow, or gravel driving conditions, 1986 Renault 21 will offer significantly more control. 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, 1999 Opel Signum (300 Nm @ 4000 RPM) has 25 more torque (in Nm) than 1986 Renault 21. (275 Nm @ 3000 RPM). This means 1999 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1986 Renault 21.
Compare all specifications:
| 1999 Opel Signum | 1986 Renault 21 | |
| Make | Opel | Renault |
| Model | Signum | 21 |
| Year Released | 1999 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 3175 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 208 HP | 175 HP |
| Engine RPM | 6200 RPM | 5200 RPM |
| Torque | 300 Nm | 275 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 87.5 mm | 88 mm |
| Engine Stroke Size | 88 mm | 82 mm |
| Engine Compression Ratio | 10.0:1 | 8.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1610 kg | 1345 kg |
| Vehicle Length | 4640 mm | 4540 mm |
| Vehicle Width | 1800 mm | 1730 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2670 mm |
