2005 Audi S4 vs. 1991 Audi 100
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 @ 6300 RPM) has 114 more horse power than 1991 Audi 100. (226 HP @ 5900 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 121 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.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 60 more torque (in Nm) than 1991 Audi 100. (350 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 100.
Compare all specifications:
| 2005 Audi S4 | 1991 Audi 100 | |
| Make | Audi | Audi |
| Model | S4 | 100 |
| Year Released | 2005 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2226 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 226 HP |
| Engine RPM | 6300 RPM | 5900 RPM |
| Torque | 410 Nm | 350 Nm |
| Engine Bore Size | 85.1 mm | 81 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Engine Compression Ratio | 11.0:1 | 9.3:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1735 kg | 1614 kg |
| Vehicle Length | 4550 mm | 4800 mm |
| Vehicle Width | 1770 mm | 1810 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2700 mm |
| Fuel Consumption Highway | 11.2 L/100km | 9.5 L/100km |
| Fuel Consumption City | 15.7 L/100km | 14.2 L/100km |
| Fuel Consumption Overall | 13.8 L/100km | 8.7 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
