1991 Audi S2 vs. 1990 BMW 518
To start off, 1991 Audi S2 is newer by 1 year(s). Which means there will be less support and parts availability for 1990 BMW 518. In addition, the cost of maintenance, including insurance, on 1990 BMW 518 would be higher. At 2,226 cc (5 cylinders), 1991 Audi S2 is equipped with a bigger engine. In terms of performance, 1991 Audi S2 (216 HP @ 5900 RPM) has 103 more horse power than 1990 BMW 518. (113 HP @ 5500 RPM). In normal driving conditions, 1991 Audi S2 should accelerate faster than 1990 BMW 518. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi S2 weights approximately 260 kg more than 1990 BMW 518. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 Audi S2 is four wheel drive (4WD), it will have significant more traction and grip than 1990 BMW 518. In wet, icy, snow, or gravel driving conditions, 1991 Audi S2 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, 1991 Audi S2 (309 Nm @ 1950 RPM) has 148 more torque (in Nm) than 1990 BMW 518. (161 Nm @ 4250 RPM). This means 1991 Audi S2 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 518.
Compare all specifications:
| 1991 Audi S2 | 1990 BMW 518 | |
| Make | Audi | BMW |
| Model | S2 | 518 |
| Year Released | 1991 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 2226 cc | 1766 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 216 HP | 113 HP |
| Engine RPM | 5900 RPM | 5500 RPM |
| Torque | 309 Nm | 161 Nm |
| Torque RPM | 1950 RPM | 4250 RPM |
| Engine Bore Size | 81.1 mm | 84 mm |
| Engine Stroke Size | 86.4 mm | 81 mm |
| Engine Compression Ratio | 9.3:1 | 8.8:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1420 kg | 1160 kg |
| Vehicle Length | 4410 mm | 4730 mm |
| Vehicle Width | 1720 mm | 1760 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2560 mm | 2770 mm |
| Fuel Tank Capacity | 70 L | 52 L |
