2003 Opel Speedster vs. 2005 Pontiac Bonneville
To start off, 2005 Pontiac Bonneville is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Speedster. In addition, the cost of maintenance, including insurance, on 2003 Opel Speedster would be higher. At 4,572 cc (8 cylinders), 2005 Pontiac Bonneville is equipped with a bigger engine. In terms of performance, 2005 Pontiac Bonneville (275 HP @ 5200 RPM) has 130 more horse power than 2003 Opel Speedster. (145 HP @ 6000 RPM) In normal driving conditions, 2005 Pontiac Bonneville should accelerate faster than 2003 Opel Speedster. With that said, vehicle weight also plays an important factor in acceleration. 2005 Pontiac Bonneville weights approximately 843 kg more than 2003 Opel Speedster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Opel Speedster 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 2003 Opel Speedster. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Pontiac Bonneville (407 Nm) has 204 more torque (in Nm) than 2003 Opel Speedster. (203 Nm). This means 2005 Pontiac Bonneville will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Speedster. 2005 Pontiac Bonneville has automatic transmission and 2003 Opel Speedster has manual transmission. 2003 Opel Speedster will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Pontiac Bonneville will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Opel Speedster | 2005 Pontiac Bonneville | |
| Make | Opel | Pontiac |
| Model | Speedster | Bonneville |
| Year Released | 2003 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Middle | Front |
| Engine Size | 2198 cc | 4572 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 145 HP | 275 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 203 Nm | 407 Nm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 876 kg | 1719 kg |
| Vehicle Length | 3790 mm | 5150 mm |
| Vehicle Width | 1710 mm | 1890 mm |
| Vehicle Height | 1120 mm | 1440 mm |
| Wheelbase Size | 2710 mm | 2860 mm |
| Fuel Consumption | 6.4 L/100km | 9.8 L/100km |
| Fuel Consumption City | 12.3 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 8.5 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 36 L | 68 L |
