2009 BMW 523 vs. 2003 Pontiac Bonneville
To start off, 2009 BMW 523 is newer by 6 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 4,565 cc (8 cylinders), 2003 Pontiac Bonneville is equipped with a bigger engine. In terms of performance, 2003 Pontiac Bonneville (275 HP @ 5600 RPM) has 100 more horse power than 2009 BMW 523. (175 HP @ 5800 RPM) In normal driving conditions, 2003 Pontiac Bonneville should accelerate faster than 2009 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2003 Pontiac Bonneville weights approximately 144 kg more than 2009 BMW 523. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 523 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 2009 BMW 523. 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, 2003 Pontiac Bonneville (298 Nm @ 4000 RPM) has 68 more torque (in Nm) than 2009 BMW 523. (230 Nm @ 3500 RPM). This means 2003 Pontiac Bonneville will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 523.
Compare all specifications:
| 2009 BMW 523 | 2003 Pontiac Bonneville | |
| Make | BMW | Pontiac |
| Model | 523 | Bonneville |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 275 HP |
| Engine RPM | 5800 RPM | 5600 RPM |
| Torque | 230 Nm | 298 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 78.8 mm | 93.1 mm |
| Engine Stroke Size | 82 mm | 84 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1575 kg | 1719 kg |
| Vehicle Length | 4850 mm | 5150 mm |
| Vehicle Width | 1850 mm | 1890 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2890 mm | 2790 mm |
| Fuel Tank Capacity | 70 L | 70 L |
