2007 Audi A4 vs. 1997 Caterham C21
To start off, 2007 Audi A4 is newer by 10 year(s). Which means there will be less support and parts availability for 1997 Caterham C21. In addition, the cost of maintenance, including insurance, on 1997 Caterham C21 would be higher. At 3,188 cc (6 cylinders), 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 6500 RPM) has 137 more horse power than 1997 Caterham C21. (115 HP @ 6000 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1997 Caterham C21. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 960 kg more than 1997 Caterham C21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1997 Caterham C21. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Audi A4 (330 Nm @ 3250 RPM) has 185 more torque (in Nm) than 1997 Caterham C21. (145 Nm @ 3000 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1997 Caterham C21.
Compare all specifications:
| 2007 Audi A4 | 1997 Caterham C21 | |
| Make | Audi | Caterham |
| Model | A4 | C21 |
| Year Released | 2007 | 1997 |
| Engine Position | Front | Front |
| Engine Size | 3188 cc | 1587 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 252 HP | 115 HP |
| Engine RPM | 6500 RPM | 6000 RPM |
| Torque | 330 Nm | 145 Nm |
| Torque RPM | 3250 RPM | 3000 RPM |
| Engine Bore Size | 84.5 mm | 80 mm |
| Engine Stroke Size | 92.8 mm | 79 mm |
| Engine Compression Ratio | 12.5:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1610 kg | 650 kg |
| Vehicle Length | 4590 mm | 3810 mm |
| Vehicle Width | 1780 mm | 1590 mm |
| Vehicle Height | 1430 mm | 1060 mm |
| Wheelbase Size | 2660 mm | 2260 mm |
