2006 Audi RS4 vs. 1973 Audi Fox
To start off, 2006 Audi RS4 is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Audi Fox. In addition, the cost of maintenance, including insurance, on 1973 Audi Fox would be higher. At 4,163 cc (8 cylinders), 2006 Audi RS4 is equipped with a bigger engine. In terms of performance, 2006 Audi RS4 (414 HP @ 7800 RPM) has 339 more horse power than 1973 Audi Fox. (75 HP @ 5500 RPM). In normal driving conditions, 2006 Audi RS4 should accelerate faster than 1973 Audi Fox.
Because 2006 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 1973 Audi Fox. In wet, icy, snow, or gravel driving conditions, 2006 Audi RS4 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, 2006 Audi RS4 (430 Nm @ 5500 RPM) has 318 more torque (in Nm) than 1973 Audi Fox. (112 Nm @ 3200 RPM). This means 2006 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 1973 Audi Fox.
Compare all specifications:
| 2006 Audi RS4 | 1973 Audi Fox | |
| Make | Audi | Audi |
| Model | RS4 | Fox |
| Year Released | 2006 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1588 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 414 HP | 75 HP |
| Engine RPM | 7800 RPM | 5500 RPM |
| Torque | 430 Nm | 112 Nm |
| Torque RPM | 5500 RPM | 3200 RPM |
| Engine Bore Size | 84.5 mm | 79.5 mm |
| Engine Stroke Size | 92.8 mm | 80 mm |
| Engine Compression Ratio | 12.5:1 | 8.2:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4600 mm | 4390 mm |
| Vehicle Width | 1820 mm | 1690 mm |
| Vehicle Height | 1420 mm | 1370 mm |
| Wheelbase Size | 2650 mm | 2550 mm |
| Fuel Tank Capacity | 63 L | 60 L |
