1984 Audi 90 vs. 1975 AC 428
To start off, 1984 Audi 90 is newer by 9 year(s). Which means there will be less support and parts availability for 1975 AC 428. In addition, the cost of maintenance, including insurance, on 1975 AC 428 would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 1975 AC 428 (298 HP @ 4600 RPM) has 159 more horse power than 1984 Audi 90. (139 HP @ 5700 RPM) In normal driving conditions, 1975 AC 428 should accelerate faster than 1984 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 1975 AC 428 weights approximately 170 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, 1975 AC 428 (639 Nm @ 2800 RPM) has 449 more torque (in Nm) than 1984 Audi 90. (190 Nm @ 3500 RPM). This means 1975 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1984 Audi 90.
Compare all specifications:
| 1984 Audi 90 | 1975 AC 428 | |
| Make | Audi | AC |
| Model | 90 | 428 |
| Year Released | 1984 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 2226 cc | 7003 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 139 HP | 298 HP |
| Engine RPM | 5700 RPM | 4600 RPM |
| Torque | 190 Nm | 639 Nm |
| Torque RPM | 3500 RPM | 2800 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1260 kg | 1430 kg |
| Vehicle Length | 4470 mm | 4430 mm |
| Vehicle Width | 1690 mm | 1710 mm |
| Vehicle Height | 1370 mm | 1310 mm |
| Wheelbase Size | 2550 mm | 2450 mm |
