2003 BMW 645 vs. 1971 Fiat 850
To start off, 2003 BMW 645 is newer by 32 year(s). Which means there will be less support and parts availability for 1971 Fiat 850. In addition, the cost of maintenance, including insurance, on 1971 Fiat 850 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 (321 HP @ 6100 RPM) has 270 more horse power than 1971 Fiat 850. (51 HP @ 5800 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 1971 Fiat 850.
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, 2003 BMW 645 (450 Nm @ 3600 RPM) has 381 more torque (in Nm) than 1971 Fiat 850. (69 Nm @ 4500 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1971 Fiat 850.
Compare all specifications:
| 2003 BMW 645 | 1971 Fiat 850 | |
| Make | BMW | Fiat |
| Model | 645 | 850 |
| Year Released | 2003 | 1971 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4398 cc | 847 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 51 HP |
| Engine RPM | 6100 RPM | 5800 RPM |
| Torque | 450 Nm | 69 Nm |
| Torque RPM | 3600 RPM | 4500 RPM |
| Engine Compression Ratio | 10.5:1 | 9.2:1 |
| Top Speed | 250 km/hour | 153 km/hour |
| Drive Type | Rear | Rear |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4830 mm | 3660 mm |
| Vehicle Width | 1860 mm | 1510 mm |
| Vehicle Height | 1380 mm | 1310 mm |
| Wheelbase Size | 2790 mm | 2040 mm |
