2007 Cadillac STS vs. 2005 Kia Opirus
To start off, 2007 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Kia Opirus. In addition, the cost of maintenance, including insurance, on 2005 Kia Opirus would be higher. At 4,565 cc (8 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (320 HP @ 6400 RPM) has 120 more horse power than 2005 Kia Opirus. (200 HP @ 5500 RPM). In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2005 Kia Opirus. With that said, vehicle weight also plays an important factor in acceleration. 2005 Kia Opirus weights approximately 331 kg more than 2007 Cadillac STS.
Because 2007 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 2007 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2005 Kia Opirus, 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, 2007 Cadillac STS (427 Nm @ 4400 RPM) has 129 more torque (in Nm) than 2005 Kia Opirus. (298 Nm @ 3500 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Opirus.
Compare all specifications:
| 2007 Cadillac STS | 2005 Kia Opirus | |
| Make | Cadillac | Kia |
| Model | STS | Opirus |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 3497 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 200 HP |
| Engine RPM | 6400 RPM | 5500 RPM |
| Torque | 427 Nm | 298 Nm |
| Torque RPM | 4400 RPM | 3500 RPM |
| Engine Compression Ratio | 10.5:1 | 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 | 1566 kg | 1897 kg |
| Vehicle Length | 4990 mm | 4990 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1490 mm |
| Wheelbase Size | 2960 mm | 2670 mm |
| Fuel Consumption Overall | 11.8 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 64 L | 70 L |
