2006 BMW 645 vs. 2005 Saab 03-Sep
To start off, 2006 BMW 645 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Saab 03-Sep. In addition, the cost of maintenance, including insurance, on 2005 Saab 03-Sep 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 213 more horse power than 2005 Saab 03-Sep. (115 HP @ 4000 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2005 Saab 03-Sep. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 171 kg more than 2005 Saab 03-Sep. 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, 2005 Saab 03-Sep, 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 210 more torque (in Nm) than 2005 Saab 03-Sep. (240 Nm @ 2000 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Saab 03-Sep. 2005 Saab 03-Sep has automatic transmission and 2006 BMW 645 has manual transmission. 2006 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Saab 03-Sep will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 645 | 2005 Saab 03-Sep | |
| Make | BMW | Saab |
| Model | 645 | 03-Sep |
| Year Released | 2006 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 328 HP | 115 HP |
| Engine RPM | 6100 RPM | 4000 RPM |
| Torque | 450 Nm | 240 Nm |
| Torque RPM | 3600 RPM | 2000 RPM |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 83 mm | 86 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1836 kg | 1665 kg |
| Wheelbase Size | 2790 mm | 2675 mm |
| Fuel Tank Capacity | 70 L | 62 L |
