1975 Audi 50 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 29 year(s). Which means there will be less support and parts availability for 1975 Audi 50. In addition, the cost of maintenance, including insurance, on 1975 Audi 50 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 279 more horse power than 1975 Audi 50. (49 HP @ 5800 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 1975 Audi 50. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 1005 kg more than 1975 Audi 50. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2004 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1975 Audi 50, being front wheel drive (FWD), will offer much better control with better grip. 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, 2004 BMW 645 (450 Nm @ 3600 RPM) has 373 more torque (in Nm) than 1975 Audi 50. (77 Nm @ 3500 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1975 Audi 50.
Compare all specifications:
| 1975 Audi 50 | 2004 BMW 645 | |
| Make | Audi | BMW |
| Model | 50 | 645 |
| Year Released | 1975 | 2004 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1091 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 49 HP | 328 HP |
| Engine RPM | 5800 RPM | 6100 RPM |
| Torque | 77 Nm | 450 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Rear |
| Transmission Type | 4-speed manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 685 kg | 1690 kg |
| Vehicle Length | 3510 mm | 4830 mm |
| Vehicle Width | 1570 mm | 1860 mm |
