2008 BMW 645 vs. 2003 Buick Rainier
To start off, 2008 BMW 645 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Buick Rainier. In addition, the cost of maintenance, including insurance, on 2003 Buick Rainier 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 57 more horse power than 2003 Buick Rainier. (271 HP @ 6000 RPM). In normal driving conditions, 2008 BMW 645 should accelerate faster than 2003 Buick Rainier. With that said, vehicle weight also plays an important factor in acceleration. 2003 Buick Rainier weights approximately 410 kg more than 2008 BMW 645.
Because 2003 Buick Rainier is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW 645. In wet, icy, snow, or gravel driving conditions, 2003 Buick Rainier will offer significantly more control. 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 77 more torque (in Nm) than 2003 Buick Rainier. (373 Nm @ 3600 RPM). This means 2008 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 Buick Rainier. 2003 Buick Rainier 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. 2003 Buick Rainier will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW 645 | 2003 Buick Rainier | |
| Make | BMW | Buick |
| Model | 645 | Rainier |
| Year Released | 2008 | 2003 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4195 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 271 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 450 Nm | 373 Nm |
| Torque RPM | 3600 RPM | 3600 RPM |
| Engine Bore Size | 92.1 mm | 93 mm |
| Engine Stroke Size | 82.7 mm | 102 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1690 kg | 2100 kg |
| Vehicle Length | 4830 mm | 4920 mm |
| Vehicle Width | 1860 mm | 1920 mm |
| Vehicle Height | 1380 mm | 1900 mm |
| Wheelbase Size | 2790 mm | 2880 mm |
| Fuel Tank Capacity | 70 L | 83 L |
