2009 Audi A4 vs. 1984 Audi 90
To start off, 2009 Audi A4 is newer by 25 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 2,226 cc (5 cylinders), 1984 Audi 90 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (211 HP @ 4300 RPM) has 72 more horse power than 1984 Audi 90. (139 HP @ 5700 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1984 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 1984 Audi 90 weights approximately 228 kg more than 2009 Audi A4.
Let's talk about torque, 2009 Audi A4 (350 Nm @ 1500 RPM) has 160 more torque (in Nm) than 1984 Audi 90. (190 Nm @ 3500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1984 Audi 90.
Compare all specifications:
| 2009 Audi A4 | 1984 Audi 90 | |
| Make | Audi | Audi |
| Model | A4 | 90 |
| Year Released | 2009 | 1984 |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 2226 cc |
| Engine Cylinders | 4 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 211 HP | 139 HP |
| Engine RPM | 4300 RPM | 5700 RPM |
| Torque | 350 Nm | 190 Nm |
| Torque RPM | 1500 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 81 mm |
| Engine Stroke Size | 92.8 mm | 86.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1032 kg | 1260 kg |
| Vehicle Length | 4710 mm | 4470 mm |
| Vehicle Width | 1840 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2820 mm | 2550 mm |
