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 2,771 cc (6 cylinders), 1991 Audi 100 is equipped with a bigger engine. In terms of performance, 1991 Audi 100 (173 HP @ 5500 RPM) has 3 more horse power than 2005 Audi A4. (170 HP @ 4000 RPM). In normal driving conditions, 1991 Audi 100 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 190 kg more than 1991 Audi 100.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Audi 100. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 will offer significantly more control. 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 (370 Nm @ 1500 RPM) has 121 more torque (in Nm) than 1991 Audi 100. (249 Nm @ 3000 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 | 2771 cc | 2496 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 173 HP | 170 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 249 Nm | 370 Nm |
| Torque RPM | 3000 RPM | 1500 RPM |
| Engine Compression Ratio | 10.0:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 214 km/hour | 221 km/hour |
| Acceleration 0-100mph | 10 seconds | 8.4 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1400 kg | 1590 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 |
