1957 BMW 503 vs. 1975 Opel Kadett
To start off, 1975 Opel Kadett is newer by 18 year(s). Which means there will be less support and parts availability for 1957 BMW 503. In addition, the cost of maintenance, including insurance, on 1957 BMW 503 would be higher. At 3,168 cc (8 cylinders), 1957 BMW 503 is equipped with a bigger engine. In terms of performance, 1957 BMW 503 (138 HP @ 4800 RPM) has 40 more horse power than 1975 Opel Kadett. (98 HP @ 5200 RPM). In normal driving conditions, 1957 BMW 503 should accelerate faster than 1975 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1957 BMW 503 weights approximately 670 kg more than 1975 Opel Kadett. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 1957 BMW 503 (222 Nm @ 2500 RPM) has 74 more torque (in Nm) than 1975 Opel Kadett. (148 Nm @ 3400 RPM). This means 1957 BMW 503 will have an easier job in driving up hills or pulling heavy equipment than 1975 Opel Kadett.
Compare all specifications:
| 1957 BMW 503 | 1975 Opel Kadett | |
| Make | BMW | Opel |
| Model | 503 | Kadett |
| Year Released | 1957 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 3168 cc | 1897 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 138 HP | 98 HP |
| Engine RPM | 4800 RPM | 5200 RPM |
| Torque | 222 Nm | 148 Nm |
| Torque RPM | 2500 RPM | 3400 RPM |
| Engine Bore Size | 82 mm | 93 mm |
| Engine Stroke Size | 75 mm | 69.8 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1500 kg | 830 kg |
| Vehicle Length | 4760 mm | 4130 mm |
| Vehicle Width | 1710 mm | 1590 mm |
| Vehicle Height | 1400 mm | 1290 mm |
| Wheelbase Size | 2840 mm | 2520 mm |
| Fuel Tank Capacity | 75 L | 43 L |
