2003 BMW 645 vs. 1956 Alfa Romeo 1900
To start off, 2003 BMW 645 is newer by 47 year(s). Which means there will be less support and parts availability for 1956 Alfa Romeo 1900. In addition, the cost of maintenance, including insurance, on 1956 Alfa Romeo 1900 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (325 HP @ 6100 RPM) has 211 more horse power than 1956 Alfa Romeo 1900. (114 HP @ 5500 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 1956 Alfa Romeo 1900. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 740 kg more than 1956 Alfa Romeo 1900. 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.
Compare all specifications:
| 2003 BMW 645 | 1956 Alfa Romeo 1900 | |
| Make | BMW | Alfa Romeo |
| Model | 645 | 1900 |
| Year Released | 2003 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1974 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 325 HP | 114 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Engine Bore Size | 92 mm | 84.5 mm |
| Engine Stroke Size | 82.7 mm | 88 mm |
| Top Speed | 250 km/hour | 180 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Vehicle Weight | 1690 kg | 950 kg |
| Vehicle Length | 4830 mm | 4410 mm |
| Vehicle Width | 1860 mm | 1640 mm |
| Vehicle Height | 1380 mm | 1360 mm |
| Wheelbase Size | 2890 mm | 2510 mm |
| Fuel Tank Capacity | 70 L | 71 L |
