2005 BMW 645 vs. 2005 Saturn ION
To start off, both 2005 BMW 645 and 2005 Saturn ION were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,390 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (338 HP) has 198 more horse power than 2005 Saturn ION. (140 HP). In normal driving conditions, 2005 BMW 645 should accelerate faster than 2005 Saturn ION. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 471 kg more than 2005 Saturn ION. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 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 2005 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2005 Saturn ION, 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, 2005 BMW 645 (439 Nm) has 242 more torque (in Nm) than 2005 Saturn ION. (197 Nm). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Saturn ION.
Compare all specifications:
| 2005 BMW 645 | 2005 Saturn ION | |
| Make | BMW | Saturn |
| Model | 645 | ION |
| Year Released | 2005 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4390 cc | 2196 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 140 HP |
| Torque | 439 Nm | 197 Nm |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 83 mm | 94 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1715 kg | 1244 kg |
| Vehicle Length | 4830 mm | 4690 mm |
| Vehicle Width | 1860 mm | 1710 mm |
| Vehicle Height | 1380 mm | 1460 mm |
| Wheelbase Size | 2790 mm | 2630 mm |
| Fuel Consumption Highway | 9.4 L/100km | 6.7 L/100km |
| Fuel Consumption City | 13.8 L/100km | 9.1 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 70 L | 49 L |
