2007 Acura RDX vs. 1956 BMW 503
To start off, 2007 Acura RDX is newer by 51 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 3,168 cc (8 cylinders), 1956 BMW 503 is equipped with a bigger engine. In terms of performance, 2007 Acura RDX (240 HP @ 6000 RPM) has 102 more horse power than 1956 BMW 503. (138 HP @ 4800 RPM). In normal driving conditions, 2007 Acura RDX should accelerate faster than 1956 BMW 503.
Because 2007 Acura RDX is four wheel drive (4WD), it will have significant more traction and grip than 1956 BMW 503. In wet, icy, snow, or gravel driving conditions, 2007 Acura RDX will offer significantly more control. 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, 2007 Acura RDX (353 Nm @ 4500 RPM) has 131 more torque (in Nm) than 1956 BMW 503. (222 Nm @ 2500 RPM). This means 2007 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 1956 BMW 503. 2007 Acura RDX has automatic transmission and 1956 BMW 503 has manual transmission. 1956 BMW 503 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Acura RDX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Acura RDX | 1956 BMW 503 | |
| Make | Acura | BMW |
| Model | RDX | 503 |
| Year Released | 2007 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 2299 cc | 3168 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 240 HP | 138 HP |
| Engine RPM | 6000 RPM | 4800 RPM |
| Torque | 353 Nm | 222 Nm |
| Torque RPM | 4500 RPM | 2500 RPM |
| Engine Bore Size | 86.4 mm | 82 mm |
| Engine Stroke Size | 99.1 mm | 75 mm |
| Engine Compression Ratio | 8.8:1 | 7.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4600 mm | 4760 mm |
| Vehicle Width | 1880 mm | 1710 mm |
| Vehicle Height | 1660 mm | 1400 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
