2008 Audi A5 vs. 1991 Audi 100
To start off, 2008 Audi A5 is newer by 17 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), 2008 Audi A5 is equipped with a bigger engine. In terms of performance, 2008 Audi A5 (349 HP @ 7000 RPM) has 123 more horse power than 1991 Audi 100. (226 HP @ 5900 RPM). In normal driving conditions, 2008 Audi A5 should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A5 weights approximately 16 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.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2008 Audi A5 (440 Nm @ 3500 RPM) has 90 more torque (in Nm) than 1991 Audi 100. (350 Nm @ 1950 RPM). This means 2008 Audi A5 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 100.
Compare all specifications:
| 2008 Audi A5 | 1991 Audi 100 | |
| Make | Audi | Audi |
| Model | A5 | 100 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2226 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 349 HP | 226 HP |
| Engine RPM | 7000 RPM | 5900 RPM |
| Torque | 440 Nm | 350 Nm |
| Torque RPM | 3500 RPM | 1950 RPM |
| Engine Bore Size | 84.5 mm | 81 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Engine Compression Ratio | 10.3:1 | 9.3:1 |
| Top Speed | 250 km/hour | 244 km/hour |
| Acceleration 0-100mph | 5.1 seconds | 6.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1614 kg |
| Vehicle Length | 4640 mm | 4800 mm |
| Vehicle Width | 1860 mm | 1810 mm |
| Vehicle Height | 1380 mm | 1450 mm |
| Wheelbase Size | 2760 mm | 2700 mm |
| Fuel Consumption Overall | 12.6 L/100km | 8.7 L/100km |
| Fuel Tank Capacity | 64 L | 80 L |
