2006 Audi S4 vs. 1956 BMW 503
To start off, 2006 Audi S4 is newer by 50 year(s). Which means there will be less support and parts availability for 1956 BMW 503. In addition, the cost of maintenance, including insurance, on 1956 BMW 503 would be higher. At 4,163 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (339 HP @ 7000 RPM) has 201 more horse power than 1956 BMW 503. (138 HP @ 4800 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 1956 BMW 503. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 380 kg more than 1956 BMW 503. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1956 BMW 503 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 1956 BMW 503. However, in wet, icy, snow, or gravel driving conditions, 2006 Audi S4, 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 188 more torque (in Nm) than 1956 BMW 503. (222 Nm @ 2500 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1956 BMW 503.
Compare all specifications:
| 2006 Audi S4 | 1956 BMW 503 | |
| Make | Audi | BMW |
| Model | S4 | 503 |
| Year Released | 2006 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3168 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 339 HP | 138 HP |
| Engine RPM | 7000 RPM | 4800 RPM |
| Torque | 410 Nm | 222 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 84.6 mm | 82 mm |
| Engine Stroke Size | 92.8 mm | 75 mm |
| Engine Compression Ratio | 11.0:1 | 7.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1880 kg | 1500 kg |
| Vehicle Length | 4590 mm | 4760 mm |
| Vehicle Width | 1730 mm | 1710 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2650 mm | 2840 mm |
| Fuel Tank Capacity | 63 L | 75 L |
