2007 Audi RS4 vs. 1991 Audi S2
To start off, 2007 Audi RS4 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Audi S2. In addition, the cost of maintenance, including insurance, on 1991 Audi S2 would be higher. At 4,161 cc (8 cylinders), 2007 Audi RS4 is equipped with a bigger engine. In terms of performance, 2007 Audi RS4 (414 HP @ 7800 RPM) has 198 more horse power than 1991 Audi S2. (216 HP @ 5900 RPM). In normal driving conditions, 2007 Audi RS4 should accelerate faster than 1991 Audi S2. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi RS4 weights approximately 290 kg more than 1991 Audi S2. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2007 Audi RS4 (430 Nm @ 5500 RPM) has 121 more torque (in Nm) than 1991 Audi S2. (309 Nm @ 1950 RPM). This means 2007 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi S2.
Compare all specifications:
| 2007 Audi RS4 | 1991 Audi S2 | |
| Make | Audi | Audi |
| Model | RS4 | S2 |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2226 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 414 HP | 216 HP |
| Engine RPM | 7800 RPM | 5900 RPM |
| Torque | 430 Nm | 309 Nm |
| Torque RPM | 5500 RPM | 1950 RPM |
| Engine Bore Size | 84.5 mm | 81.1 mm |
| Engine Stroke Size | 92.8 mm | 86.4 mm |
| Engine Compression Ratio | 12.5:1 | 9.3:1 |
| Acceleration 0-100mph | 4.8 seconds | 6.1 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1420 kg |
| Vehicle Length | 4590 mm | 4410 mm |
| Vehicle Width | 1820 mm | 1720 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2660 mm | 2560 mm |
| Fuel Consumption Overall | 13.5 L/100km | 8.3 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
