1946 Alfa Romeo 6C vs. 2003 BMW 645
To start off, 2003 BMW 645 is newer by 57 year(s). Which means there will be less support and parts availability for 1946 Alfa Romeo 6C. In addition, the cost of maintenance, including insurance, on 1946 Alfa Romeo 6C 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 (310 HP @ 6000 RPM) has 205 more horse power than 1946 Alfa Romeo 6C. (105 HP @ 4800 RPM) In normal driving conditions, 2003 BMW 645 should accelerate faster than 1946 Alfa Romeo 6C. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 298 kg more than 1946 Alfa Romeo 6C. 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. 2003 BMW 645 has automatic transmission and 1946 Alfa Romeo 6C has manual transmission. 1946 Alfa Romeo 6C will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1946 Alfa Romeo 6C | 2003 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | 6C | 645 |
| Year Released | 1946 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2443 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 105 HP | 310 HP |
| Engine RPM | 4800 RPM | 6000 RPM |
| Engine Bore Size | 72 mm | 92 mm |
| Engine Stroke Size | 100 mm | 82.7 mm |
| Top Speed | 165 km/hour | 250 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1400 kg | 1698 kg |
| Vehicle Length | 4690 mm | 4830 mm |
| Vehicle Width | 1910 mm | 1860 mm |
| Vehicle Height | 1510 mm | 1380 mm |
| Wheelbase Size | 2710 mm | 2790 mm |
| Fuel Tank Capacity | 77 L | 70 L |
