1986 Renault 21 vs. 2001 Opel Signum
To start off, 2001 Opel Signum is newer by 15 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 3,173 cc (6 cylinders), 2001 Opel Signum is equipped with a bigger engine. In terms of performance, 2001 Opel Signum (208 HP @ 6200 RPM) has 133 more horse power than 1986 Renault 21. (75 HP @ 5000 RPM) In normal driving conditions, 2001 Opel Signum should accelerate faster than 1986 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2001 Opel Signum weights approximately 655 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.
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, 2001 Opel Signum (300 Nm @ 4000 RPM) has 171 more torque (in Nm) than 1986 Renault 21. (129 Nm @ 3250 RPM). This means 2001 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1986 Renault 21. 2001 Opel Signum has automatic transmission and 1986 Renault 21 has manual transmission. 1986 Renault 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2001 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1986 Renault 21 | 2001 Opel Signum | |
| Make | Renault | Opel |
| Model | 21 | Signum |
| Year Released | 1986 | 2001 |
| Engine Position | Front | Front |
| Engine Size | 1719 cc | 3173 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 75 HP | 208 HP |
| Engine RPM | 5000 RPM | 6200 RPM |
| Torque | 129 Nm | 300 Nm |
| Torque RPM | 3250 RPM | 4000 RPM |
| Engine Bore Size | 81 mm | 87.5 mm |
| Engine Stroke Size | 83.5 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 176 km/hour | 237 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 955 kg | 1610 kg |
| Vehicle Length | 4470 mm | 4640 mm |
| Vehicle Width | 1730 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2550 mm | 2640 mm |
| Fuel Consumption Overall | 7 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
