2005 Audi A4 vs. 1990 Renault 21
To start off, 2005 Audi A4 is newer by 15 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 1,984 cc (4 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (129 HP @ 4000 RPM) has 54 more horse power than 1990 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 1990 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 520 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.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1990 Renault 21. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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, 2005 Audi A4 (310 Nm @ 1900 RPM) has 181 more torque (in Nm) than 1990 Renault 21. (129 Nm @ 3250 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1990 Renault 21.
Compare all specifications:
| 2005 Audi A4 | 1990 Renault 21 | |
| Make | Audi | Renault |
| Model | A4 | 21 |
| Year Released | 2005 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 129 HP | 75 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 310 Nm | 129 Nm |
| Torque RPM | 1900 RPM | 3250 RPM |
| Engine Bore Size | 79.5 mm | 81 mm |
| Engine Stroke Size | 95.5 mm | 83.5 mm |
| Engine Compression Ratio | 19.0:1 | 9.2:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1540 kg | 1020 kg |
| Vehicle Length | 4550 mm | 4650 mm |
| Vehicle Width | 1780 mm | 1720 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2820 mm |
