2007 Cadillac STS vs. 2003 Kia Sephia II
To start off, 2007 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Kia Sephia II. In addition, the cost of maintenance, including insurance, on 2003 Kia Sephia II 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 241 more horse power than 2003 Kia Sephia II. (79 HP @ 5500 RPM). In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2003 Kia Sephia II. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 511 kg more than 2003 Kia Sephia II. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2003 Kia Sephia II, 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 305 more torque (in Nm) than 2003 Kia Sephia II. (122 Nm @ 2500 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 Kia Sephia II. 2007 Cadillac STS has automatic transmission and 2003 Kia Sephia II has manual transmission. 2003 Kia Sephia II will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Cadillac STS | 2003 Kia Sephia II | |
| Make | Cadillac | Kia |
| Model | STS | Sephia II |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 1498 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 79 HP |
| Engine RPM | 6400 RPM | 5500 RPM |
| Torque | 427 Nm | 122 Nm |
| Torque RPM | 4400 RPM | 2500 RPM |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1566 kg | 1055 kg |
| Vehicle Length | 4990 mm | 4520 mm |
| Vehicle Width | 1850 mm | 1730 mm |
| Vehicle Height | 1470 mm | 1420 mm |
| Wheelbase Size | 2960 mm | 2570 mm |
| Fuel Tank Capacity | 64 L | 50 L |
