2004 Audi S4 vs. 1991 Audi 100
To start off, 2004 Audi S4 is newer by 13 year(s). Which means there will be less support and parts availability for 1991 Audi 100. In addition, the cost of maintenance, including insurance, on 1991 Audi 100 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 (340 HP @ 6200 RPM) has 259 more horse power than 1991 Audi 100. (81 HP @ 4400 RPM). In normal driving conditions, 2004 Audi S4 should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 510 kg more than 1991 Audi 100. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 2004 Audi S4 | 1991 Audi 100 | |
| Make | Audi | Audi |
| Model | S4 | 100 |
| Year Released | 2004 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2370 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 81 HP |
| Engine RPM | 6200 RPM | 4400 RPM |
| Vehicle Weight | 1895 kg | 1385 kg |
| Vehicle Length | 4580 mm | 4800 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1450 mm |
