2004 Audi A8 vs. 1991 Audi 100
To start off, 2004 Audi A8 is newer by 13 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 4,172 cc (8 cylinders), 2004 Audi A8 is equipped with a bigger engine. In terms of performance, 2004 Audi A8 (330 HP @ 6500 RPM) has 158 more horse power than 1991 Audi 100. (172 HP @ 5500 RPM). In normal driving conditions, 2004 Audi A8 should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A8 weights approximately 270 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.
Let's talk about torque, 2004 Audi A8 (450 Nm @ 3500 RPM) has 200 more torque (in Nm) than 1991 Audi 100. (250 Nm @ 3000 RPM). This means 2004 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 100.
Compare all specifications:
| 2004 Audi A8 | 1991 Audi 100 | |
| Make | Audi | Audi |
| Model | A8 | 100 |
| Year Released | 2004 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2771 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 330 HP | 172 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 450 Nm | 250 Nm |
| Torque RPM | 3500 RPM | 3000 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1776 kg | 1506 kg |
| Vehicle Length | 5060 mm | 4800 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1450 mm | 1450 mm |
