2005 Audi A8 vs. 1984 Audi 90
To start off, 2005 Audi A8 is newer by 21 year(s). Which means there will be less support and parts availability for 1984 Audi 90. In addition, the cost of maintenance, including insurance, on 1984 Audi 90 would be higher. At 3,934 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (276 HP @ 3750 RPM) has 137 more horse power than 1984 Audi 90. (139 HP @ 5700 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 1984 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 680 kg more than 1984 Audi 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi A8 (650 Nm @ 1800 RPM) has 460 more torque (in Nm) than 1984 Audi 90. (190 Nm @ 3500 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1984 Audi 90.
Compare all specifications:
| 2005 Audi A8 | 1984 Audi 90 | |
| Make | Audi | Audi |
| Model | A8 | 90 |
| Year Released | 2005 | 1984 |
| Engine Position | Front | Front |
| Engine Size | 3934 cc | 2226 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 276 HP | 139 HP |
| Engine RPM | 3750 RPM | 5700 RPM |
| Torque | 650 Nm | 190 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 81 mm |
| Engine Stroke Size | 95.5 mm | 86.4 mm |
| Fuel Type | Diesel | Gasoline |
| Vehicle Weight | 1940 kg | 1260 kg |
| Vehicle Length | 5060 mm | 4470 mm |
| Vehicle Width | 1900 mm | 1690 mm |
| Vehicle Height | 1450 mm | 1370 mm |
| Wheelbase Size | 2950 mm | 2550 mm |
