2006 Audi RS4 vs. 1991 Ford Sierra
To start off, 2006 Audi RS4 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra 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 (415 HP @ 7800 RPM) has 341 more horse power than 1991 Ford Sierra. (74 HP @ 4900 RPM). In normal driving conditions, 2006 Audi RS4 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi RS4 weights approximately 830 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Ford Sierra. 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 307 more torque (in Nm) than 1991 Ford Sierra. (123 Nm @ 2900 RPM). This means 2006 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2006 Audi RS4 | 1991 Ford Sierra | |
| Make | Audi | Ford |
| Model | RS4 | Sierra |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1597 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 415 HP | 74 HP |
| Engine RPM | 7800 RPM | 4900 RPM |
| Torque | 430 Nm | 123 Nm |
| Torque RPM | 5500 RPM | 2900 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1845 kg | 1015 kg |
| Vehicle Length | 4560 mm | 4430 mm |
| Vehicle Width | 1820 mm | 1700 mm |
| Vehicle Height | 1400 mm | 1370 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
