2006 BMW 645 vs. 1979 Saab 900
To start off, 2006 BMW 645 is newer by 27 year(s). Which means there will be less support and parts availability for 1979 Saab 900. In addition, the cost of maintenance, including insurance, on 1979 Saab 900 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 185 more horse power than 1979 Saab 900. (143 HP @ 5000 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 1979 Saab 900. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 565 kg more than 1979 Saab 900. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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 2006 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1979 Saab 900, 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 214 more torque (in Nm) than 1979 Saab 900. (236 Nm @ 3000 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1979 Saab 900.
Compare all specifications:
| 2006 BMW 645 | 1979 Saab 900 | |
| Make | BMW | Saab |
| Model | 645 | 900 |
| Year Released | 2006 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1985 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 328 HP | 143 HP |
| Engine RPM | 6100 RPM | 5000 RPM |
| Torque | 450 Nm | 236 Nm |
| Torque RPM | 3600 RPM | 3000 RPM |
| Engine Compression Ratio | 10.0:1 | 8.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 191 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1815 kg | 1250 kg |
| Vehicle Length | 4830 mm | 4750 mm |
| Vehicle Width | 1860 mm | 1700 mm |
| Vehicle Height | 1380 mm | 1380 mm |
| Wheelbase Size | 2790 mm | 2530 mm |
