2008 BMW 645 vs. 2007 Saturn Aura
To start off, 2008 BMW 645 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Saturn Aura. In addition, the cost of maintenance, including insurance, on 2007 Saturn Aura would be higher. At 4,398 cc (8 cylinders), 2008 BMW 645 is equipped with a bigger engine. In terms of performance, 2008 BMW 645 (328 HP @ 6100 RPM) has 164 more horse power than 2007 Saturn Aura. (164 HP @ 6400 RPM). In normal driving conditions, 2008 BMW 645 should accelerate faster than 2007 Saturn Aura.
Because 2008 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 2008 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2007 Saturn Aura, 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, 2008 BMW 645 (450 Nm @ 3600 RPM) has 234 more torque (in Nm) than 2007 Saturn Aura. (216 Nm @ 5000 RPM). This means 2008 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2007 Saturn Aura. 2007 Saturn Aura has automatic transmission and 2008 BMW 645 has manual transmission. 2008 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Saturn Aura will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW 645 | 2007 Saturn Aura | |
| Make | BMW | Saturn |
| Model | 645 | Aura |
| Year Released | 2008 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2393 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 164 HP |
| Engine RPM | 6100 RPM | 6400 RPM |
| Torque | 450 Nm | 216 Nm |
| Torque RPM | 3600 RPM | 5000 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4830 mm | 4860 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2790 mm | 2860 mm |
| Fuel Tank Capacity | 70 L | 61 L |
