1991 Audi 100 vs. 2005 Audi S4
To start off, 2005 Audi S4 is newer by 14 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), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 259 more horse power than 1991 Audi 100. (81 HP @ 4400 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 385 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:
| 1991 Audi 100 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | 100 | S4 |
| Year Released | 1991 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2370 cc | 4163 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 81 HP | 340 HP |
| Engine RPM | 4400 RPM | 4000 RPM |
| Vehicle Weight | 1385 kg | 1770 kg |
| Vehicle Length | 4800 mm | 4550 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1450 mm | 1430 mm |
