2009 Audi A5 vs. 1991 Audi 100
To start off, 2009 Audi A5 is newer by 18 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, 2009 Audi A5 (168 HP @ 4800 RPM) has 37 more horse power than 1991 Audi 100. (131 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A5 should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi 100 weights approximately 15 kg more than 2009 Audi A5.
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, 2009 Audi A5 (250 Nm @ 1500 RPM) has 64 more torque (in Nm) than 1991 Audi 100. (186 Nm @ 4000 RPM). This means 2009 Audi A5 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 100.
Compare all specifications:
| 2009 Audi A5 | 1991 Audi 100 | |
| Make | Audi | Audi |
| Model | A5 | 100 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 2309 cc |
| Engine Cylinders | 4 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 168 HP | 131 HP |
| Engine RPM | 4800 RPM | 5500 RPM |
| Torque | 250 Nm | 186 Nm |
| Torque RPM | 1500 RPM | 4000 RPM |
| Engine Bore Size | 82.6 mm | 82.5 mm |
| Engine Stroke Size | 84.1 mm | 86.4 mm |
| Engine Compression Ratio | 9.6:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1395 kg | 1410 kg |
| Vehicle Length | 4630 mm | 4800 mm |
| Vehicle Width | 1860 mm | 1780 mm |
| Vehicle Height | 1380 mm | 1450 mm |
