1984 Audi 90 vs. 2004 Audi S4
To start off, 2004 Audi S4 is newer by 20 year(s). Which means there will be less support and parts availability for 1984 Audi 90. In addition, the cost of maintenance, including insurance, on 1984 Audi 90 would be higher. At 4,163 cc (8 cylinders), 2004 Audi S4 is equipped with a bigger engine. In terms of performance, 2004 Audi S4 (339 HP @ 7000 RPM) has 200 more horse power than 1984 Audi 90. (139 HP @ 5700 RPM) In normal driving conditions, 2004 Audi S4 should accelerate faster than 1984 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 400 kg more than 1984 Audi 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2004 Audi S4 (410 Nm @ 3500 RPM) has 220 more torque (in Nm) than 1984 Audi 90. (190 Nm @ 3500 RPM). This means 2004 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1984 Audi 90.
Compare all specifications:
| 1984 Audi 90 | 2004 Audi S4 | |
| Make | Audi | Audi |
| Model | 90 | S4 |
| Year Released | 1984 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2226 cc | 4163 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 139 HP | 339 HP |
| Engine RPM | 5700 RPM | 7000 RPM |
| Torque | 190 Nm | 410 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Vehicle Weight | 1260 kg | 1660 kg |
| Vehicle Length | 4470 mm | 4590 mm |
| Vehicle Width | 1690 mm | 1780 mm |
| Vehicle Height | 1370 mm | 1430 mm |
| Wheelbase Size | 2550 mm | 2430 mm |
