1991 Audi 100 vs. 2008 Audi A4
To start off, 2008 Audi A4 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 2,771 cc (6 cylinders), 1991 Audi 100 is equipped with a bigger engine. In terms of performance, 1991 Audi 100 (173 HP @ 5500 RPM) has 34 more horse power than 2008 Audi A4. (139 HP @ 4000 RPM). In normal driving conditions, 1991 Audi 100 should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi 100 weights approximately 125 kg more than 2008 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2008 Audi A4 (320 Nm @ 1750 RPM) has 71 more torque (in Nm) than 1991 Audi 100. (249 Nm @ 3000 RPM). This means 2008 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 | 2008 Audi A4 | |
| Make | Audi | Audi |
| Model | 100 | A4 |
| Year Released | 1991 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 2771 cc | 1968 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 173 HP | 139 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 249 Nm | 320 Nm |
| Torque RPM | 3000 RPM | 1750 RPM |
| Engine Bore Size | 82.5 mm | 81 mm |
| Engine Stroke Size | 86.4 mm | 95.5 mm |
| Engine Compression Ratio | 10.0:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 214 km/hour | 207 km/hour |
| Acceleration 0-100mph | 10 seconds | 9.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1400 kg | 1275 kg |
| Vehicle Length | 4800 mm | 4550 mm |
| Vehicle Width | 1790 mm | 1780 mm |
| Vehicle Height | 1440 mm | 1430 mm |
| Wheelbase Size | 2700 mm | 2660 mm |
