2009 Audi A4 vs. 1975 Audi 80
To start off, 2009 Audi A4 is newer by 34 year(s). Which means there will be less support and parts availability for 1975 Audi 80. In addition, the cost of maintenance, including insurance, on 1975 Audi 80 would be higher. At 1,968 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (138 HP @ 4000 RPM) has 63 more horse power than 1975 Audi 80. (75 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1975 Audi 80. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 522 kg more than 1975 Audi 80. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Audi A4 (320 Nm @ 1750 RPM) has 208 more torque (in Nm) than 1975 Audi 80. (112 Nm @ 3200 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1975 Audi 80.
Compare all specifications:
| 2009 Audi A4 | 1975 Audi 80 | |
| Make | Audi | Audi |
| Model | A4 | 80 |
| Year Released | 2009 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 1588 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 138 HP | 75 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 320 Nm | 112 Nm |
| Torque RPM | 1750 RPM | 3200 RPM |
| Engine Bore Size | 81 mm | 79.5 mm |
| Engine Stroke Size | 95.5 mm | 80 mm |
| Engine Compression Ratio | 18.0:1 | 8.2:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1434 kg | 912 kg |
| Vehicle Length | 4590 mm | 4390 mm |
| Vehicle Width | 1780 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2650 mm | 2550 mm |
| Fuel Tank Capacity | 70 L | 60 L |
