1974 Fiat 133 vs. 2005 BMW 645
To start off, 2005 BMW 645 is newer by 31 year(s). Which means there will be less support and parts availability for 1974 Fiat 133. In addition, the cost of maintenance, including insurance, on 1974 Fiat 133 would be higher. At 4,390 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (338 HP @ 6100 RPM) has 304 more horse power than 1974 Fiat 133. (34 HP @ 4800 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 1974 Fiat 133. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 1025 kg more than 1974 Fiat 133. 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. Let's talk about torque, 2005 BMW 645 (439 Nm @ 3600 RPM) has 385 more torque (in Nm) than 1974 Fiat 133. (54 Nm @ 3200 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1974 Fiat 133.
Compare all specifications:
| 1974 Fiat 133 | 2005 BMW 645 | |
| Make | Fiat | BMW |
| Model | 133 | 645 |
| Year Released | 1974 | 2005 |
| Engine Position | Rear | Front |
| Engine Size | 842 cc | 4390 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 34 HP | 338 HP |
| Engine RPM | 4800 RPM | 6100 RPM |
| Torque | 54 Nm | 439 Nm |
| Torque RPM | 3200 RPM | 3600 RPM |
| Engine Bore Size | 65 mm | 92 mm |
| Engine Stroke Size | 68 mm | 83 mm |
| Engine Compression Ratio | 7.9:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Vehicle Weight | 690 kg | 1715 kg |
| Vehicle Length | 3460 mm | 4830 mm |
| Vehicle Width | 1430 mm | 1860 mm |
| Vehicle Height | 1330 mm | 1380 mm |
| Wheelbase Size | 2030 mm | 2790 mm |
