2009 Cadillac STS vs. 2005 Opel Speedster
To start off, 2009 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Opel Speedster. In addition, the cost of maintenance, including insurance, on 2005 Opel Speedster would be higher. At 3,599 cc (6 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 105 more horse power than 2005 Opel Speedster. (197 HP @ 5500 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2005 Opel Speedster. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 630 kg more than 2005 Opel Speedster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2009 Cadillac STS (369 Nm @ 5200 RPM) has 118 more torque (in Nm) than 2005 Opel Speedster. (251 Nm @ 1950 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Speedster. 2009 Cadillac STS has automatic transmission and 2005 Opel Speedster has manual transmission. 2005 Opel Speedster will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Cadillac STS | 2005 Opel Speedster | |
| Make | Cadillac | Opel |
| Model | STS | Speedster |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 3599 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 302 HP | 197 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 369 Nm | 251 Nm |
| Torque RPM | 5200 RPM | 1950 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1635 kg | 1005 kg |
| Vehicle Length | 5000 mm | 3790 mm |
| Vehicle Width | 1850 mm | 1710 mm |
| Vehicle Height | 1470 mm | 1120 mm |
| Wheelbase Size | 2960 mm | 2340 mm |
| Fuel Consumption Overall | 11.8 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 64 L | 36 L |
