2007 BMW 645 vs. 1983 Fiat Ritmo
To start off, 2007 BMW 645 is newer by 24 year(s). Which means there will be less support and parts availability for 1983 Fiat Ritmo. In addition, the cost of maintenance, including insurance, on 1983 Fiat Ritmo would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 199 more horse power than 1983 Fiat Ritmo. (129 HP @ 5900 RPM). In normal driving conditions, 2007 BMW 645 should accelerate faster than 1983 Fiat Ritmo. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 865 kg more than 1983 Fiat Ritmo. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1983 Fiat Ritmo, being front wheel drive (FWD), will offer much better control with better grip. 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 270 more torque (in Nm) than 1983 Fiat Ritmo. (180 Nm @ 3600 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1983 Fiat Ritmo.
Compare all specifications:
| 2007 BMW 645 | 1983 Fiat Ritmo | |
| Make | BMW | Fiat |
| Model | 645 | Ritmo |
| Year Released | 2007 | 1983 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 328 HP | 129 HP |
| Engine RPM | 6100 RPM | 5900 RPM |
| Torque | 450 Nm | 180 Nm |
| Torque RPM | 3600 RPM | 3600 RPM |
| Engine Compression Ratio | 10.0:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1815 kg | 950 kg |
| Vehicle Length | 4830 mm | 4020 mm |
| Vehicle Width | 1860 mm | 1660 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2790 mm | 2460 mm |
