2003 Audi A3 vs. 1991 Audi 100
To start off, 2003 Audi A3 is newer by 12 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 (172 HP @ 5500 RPM) has 72 more horse power than 2003 Audi A3. (100 HP @ 5600 RPM) In normal driving conditions, 1991 Audi 100 should accelerate faster than 2003 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi 100 weights approximately 301 kg more than 2003 Audi A3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1991 Audi 100 (250 Nm @ 3000 RPM) has 102 more torque (in Nm) than 2003 Audi A3. (148 Nm @ 3800 RPM). This means 1991 Audi 100 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A3.
Compare all specifications:
| 2003 Audi A3 | 1991 Audi 100 | |
| Make | Audi | Audi |
| Model | A3 | 100 |
| Year Released | 2003 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1595 cc | 2771 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 100 HP | 172 HP |
| Engine RPM | 5600 RPM | 5500 RPM |
| Torque | 148 Nm | 250 Nm |
| Torque RPM | 3800 RPM | 3000 RPM |
| Engine Bore Size | 81.1 mm | 82.5 mm |
| Engine Stroke Size | 77.4 mm | 86.4 mm |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1205 kg | 1506 kg |
| Vehicle Length | 4210 mm | 4800 mm |
| Vehicle Width | 1770 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1450 mm |
