2005 Audi S4 vs. 1990 BMW 520
To start off, 2005 Audi S4 is newer by 15 year(s). Which means there will be less support and parts availability for 1990 BMW 520. In addition, the cost of maintenance, including insurance, on 1990 BMW 520 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 195 more horse power than 1990 BMW 520. (145 HP @ 5900 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1990 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 193 kg more than 1990 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 224 more torque (in Nm) than 1990 BMW 520. (186 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 520.
Compare all specifications:
| 2005 Audi S4 | 1990 BMW 520 | |
| Make | Audi | BMW |
| Model | S4 | 520 |
| Year Released | 2005 | 1990 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1991 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 145 HP |
| Engine RPM | 6300 RPM | 5900 RPM |
| Torque | 410 Nm | 186 Nm |
| Engine Bore Size | 85.1 mm | 80 mm |
| Engine Stroke Size | 93 mm | 66 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1735 kg | 1542 kg |
| Vehicle Length | 4550 mm | 4730 mm |
| Vehicle Width | 1770 mm | 1760 mm |
| Vehicle Height | 1430 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
