2005 Opel Vectra vs. 1991 Renault 21
To start off, 2005 Opel Vectra is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Renault 21. In addition, the cost of maintenance, including insurance, on 1991 Renault 21 would be higher. At 1,998 cc (4 cylinders), 2005 Opel Vectra is equipped with a bigger engine. In terms of performance, 2005 Opel Vectra (173 HP @ 5500 RPM) has 98 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2005 Opel Vectra should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Vectra weights approximately 465 kg more than 1991 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, 2005 Opel Vectra (265 Nm @ 2500 RPM) has 136 more torque (in Nm) than 1991 Renault 21. (129 Nm @ 3250 RPM). This means 2005 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 1991 Renault 21.
Compare all specifications:
| 2005 Opel Vectra | 1991 Renault 21 | |
| Make | Opel | Renault |
| Model | Vectra | 21 |
| Year Released | 2005 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 173 HP | 75 HP |
| Engine RPM | 5500 RPM | 5000 RPM |
| Torque | 265 Nm | 129 Nm |
| Torque RPM | 2500 RPM | 3250 RPM |
| Engine Bore Size | 86 mm | 81 mm |
| Engine Stroke Size | 86 mm | 83.5 mm |
| Engine Compression Ratio | 9.5:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1485 kg | 1020 kg |
| Vehicle Length | 4600 mm | 4650 mm |
| Vehicle Width | 1800 mm | 1720 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2620 mm | 2820 mm |
