2005 Cadillac STS vs. 2008 Opel Vectra
To start off, 2008 Opel Vectra is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2005 Cadillac STS would be higher. At 3,556 cc (6 cylinders), 2005 Cadillac STS is equipped with a bigger engine. In terms of performance, 2008 Opel Vectra (276 HP @ 5500 RPM) has 21 more horse power than 2005 Cadillac STS. (255 HP @ 6500 RPM) In normal driving conditions, 2008 Opel Vectra should accelerate faster than 2005 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 216 kg more than 2008 Opel Vectra.
Because 2005 Cadillac STS 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 2005 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2008 Opel Vectra, 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 Opel Vectra (355 Nm @ 1800 RPM) has 16 more torque (in Nm) than 2005 Cadillac STS. (339 Nm @ 3200 RPM). This means 2008 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2005 Cadillac STS. 2005 Cadillac STS has automatic transmission and 2008 Opel Vectra has manual transmission. 2008 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Cadillac STS | 2008 Opel Vectra | |
| Make | Cadillac | Opel |
| Model | STS | Vectra |
| Year Released | 2005 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 3556 cc | 2792 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 276 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 339 Nm | 355 Nm |
| Torque RPM | 3200 RPM | 1800 RPM |
| Engine Bore Size | 94 mm | 89 mm |
| Engine Stroke Size | 86 mm | 74.8 mm |
| Engine Compression Ratio | 10.2:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 229 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 6.5 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1796 kg | 1580 kg |
| Vehicle Length | 4990 mm | 4650 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1460 mm |
| Wheelbase Size | 2890 mm | 2710 mm |
| Fuel Consumption Overall | 12.4 L/100km | 10.4 L/100km |
| Fuel Tank Capacity | 64 L | 61 L |
