2008 Audi A4 vs. 1990 Renault 21
To start off, 2008 Audi A4 is newer by 18 year(s). Which means there will be less support and parts availability for 1990 Renault 21. In addition, the cost of maintenance, including insurance, on 1990 Renault 21 would be higher. At 1,721 cc (4 cylinders), 1990 Renault 21 is equipped with a bigger engine. In terms of performance, 2008 Audi A4 (101 HP @ 5600 RPM) has 26 more horse power than 1990 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2008 Audi A4 should accelerate faster than 1990 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A4 weights approximately 282 kg more than 1990 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, 2008 Audi A4 (148 Nm @ 3800 RPM) has 19 more torque (in Nm) than 1990 Renault 21. (129 Nm @ 3250 RPM). This means 2008 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1990 Renault 21.
Compare all specifications:
| 2008 Audi A4 | 1990 Renault 21 | |
| Make | Audi | Renault |
| Model | A4 | 21 |
| Year Released | 2008 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 1595 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 101 HP | 75 HP |
| Engine RPM | 5600 RPM | 5000 RPM |
| Torque | 148 Nm | 129 Nm |
| Torque RPM | 3800 RPM | 3250 RPM |
| Engine Bore Size | 81 mm | 81 mm |
| Engine Stroke Size | 77.4 mm | 83.5 mm |
| Engine Compression Ratio | 10.5:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1302 kg | 1020 kg |
| Vehicle Length | 4590 mm | 4650 mm |
| Vehicle Width | 1780 mm | 1720 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2650 mm | 2820 mm |
