2004 BMW 645 vs. 1979 Fiat 131
To start off, 2004 BMW 645 is newer by 25 year(s). Which means there will be less support and parts availability for 1979 Fiat 131. In addition, the cost of maintenance, including insurance, on 1979 Fiat 131 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 257 more horse power than 1979 Fiat 131. (71 HP @ 4200 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 1979 Fiat 131. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 480 kg more than 1979 Fiat 131. 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, 2004 BMW 645 (450 Nm @ 3600 RPM) has 298 more torque (in Nm) than 1979 Fiat 131. (152 Nm @ 2400 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1979 Fiat 131. 1979 Fiat 131 has automatic transmission and 2004 BMW 645 has manual transmission. 2004 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1979 Fiat 131 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 BMW 645 | 1979 Fiat 131 | |
| Make | BMW | Fiat |
| Model | 645 | 131 |
| Year Released | 2004 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2443 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 328 HP | 71 HP |
| Engine RPM | 6100 RPM | 4200 RPM |
| Torque | 450 Nm | 152 Nm |
| Torque RPM | 3600 RPM | 2400 RPM |
| Engine Bore Size | 92 mm | 93 mm |
| Engine Stroke Size | 82.7 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 22.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Vehicle Weight | 1690 kg | 1210 kg |
| Vehicle Length | 4830 mm | 4270 mm |
| Vehicle Width | 1860 mm | 1660 mm |
| Vehicle Height | 1380 mm | 1370 mm |
| Wheelbase Size | 2830 mm | 2500 mm |
