2008 BMW 645 vs. 2003 Pontiac Bonneville
To start off, 2008 BMW 645 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Pontiac Bonneville. In addition, the cost of maintenance, including insurance, on 2003 Pontiac Bonneville 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) has 128 more horse power than 2003 Pontiac Bonneville. (200 HP). In normal driving conditions, 2008 BMW 645 should accelerate faster than 2003 Pontiac Bonneville. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 645 weights approximately 185 kg more than 2003 Pontiac Bonneville. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2003 Pontiac Bonneville, 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 139 more torque (in Nm) than 2003 Pontiac Bonneville. (311 Nm @ 4000 RPM). This means 2008 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 Pontiac Bonneville. 2003 Pontiac Bonneville 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 Pontiac Bonneville will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW 645 | 2003 Pontiac Bonneville | |
| Make | BMW | Pontiac |
| Model | 645 | Bonneville |
| Year Released | 2008 | 2003 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 3791 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 328 HP | 200 HP |
| Torque | 450 Nm | 311 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Bore Size | 92 mm | 96.5 mm |
| Engine Stroke Size | 82.7 mm | 86.4 mm |
| Engine Compression Ratio | 10.0:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1630 kg |
| Vehicle Length | 4830 mm | 5110 mm |
| Vehicle Width | 1860 mm | 1890 mm |
| Vehicle Height | 1380 mm | 1440 mm |
| Wheelbase Size | 2790 mm | 2880 mm |
| Fuel Tank Capacity | 70 L | 68 L |
