2008 Audi S4 vs. 1984 Audi 90
To start off, 2008 Audi S4 is newer by 24 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), 2008 Audi S4 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (339 HP @ 7000 RPM) has 225 more horse power than 1984 Audi 90. (114 HP @ 5700 RPM). In normal driving conditions, 2008 Audi S4 should accelerate faster than 1984 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S4 weights approximately 739 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, 2008 Audi S4 (410 Nm @ 3500 RPM) has 242 more torque (in Nm) than 1984 Audi 90. (168 Nm @ 3200 RPM). This means 2008 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1984 Audi 90.
Compare all specifications:
| 2008 Audi S4 | 1984 Audi 90 | |
| Make | Audi | Audi |
| Model | S4 | 90 |
| Year Released | 2008 | 1984 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1994 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 339 HP | 114 HP |
| Engine RPM | 7000 RPM | 5700 RPM |
| Torque | 410 Nm | 168 Nm |
| Torque RPM | 3500 RPM | 3200 RPM |
| Engine Bore Size | 84.5 mm | 81 mm |
| Engine Stroke Size | 92.8 mm | 77.4 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Vehicle Weight | 1795 kg | 1056 kg |
| Vehicle Length | 4580 mm | 4470 mm |
| Vehicle Width | 1790 mm | 1690 mm |
| Vehicle Height | 1450 mm | 1370 mm |
| Wheelbase Size | 2660 mm | 2550 mm |
