1991 Audi 100 vs. 2005 Audi A4
To start off, 2005 Audi A4 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 2,309 cc (5 cylinders), 1991 Audi 100 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (148 HP @ 5700 RPM) has 17 more horse power than 1991 Audi 100. (131 HP @ 5500 RPM) In normal driving conditions, 2005 Audi A4 should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi 100 weights approximately 35 kg more than 2005 Audi A4.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 Audi A4 (210 Nm @ 1750 RPM) has 24 more torque (in Nm) than 1991 Audi 100. (186 Nm @ 4000 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 100.
Compare all specifications:
| 1991 Audi 100 | 2005 Audi A4 | |
| Make | Audi | Audi |
| Model | 100 | A4 |
| Year Released | 1991 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 1781 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 131 HP | 148 HP |
| Engine RPM | 5500 RPM | 5700 RPM |
| Torque | 186 Nm | 210 Nm |
| Torque RPM | 4000 RPM | 1750 RPM |
| Engine Bore Size | 82.5 mm | 81.1 mm |
| Engine Stroke Size | 86.4 mm | 86.4 mm |
| Engine Compression Ratio | 10.0:1 | 9.3:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1410 kg | 1375 kg |
| Vehicle Length | 4800 mm | 4550 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1450 mm | 1430 mm |
