2006 Cadillac STS vs. 2003 Toyota Sienna
To start off, 2006 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Toyota Sienna. In addition, the cost of maintenance, including insurance, on 2003 Toyota Sienna would be higher. At 3,563 cc (6 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (253 HP @ 6500 RPM) has 80 more horse power than 2003 Toyota Sienna. (173 HP @ 5400 RPM). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2003 Toyota Sienna. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 77 kg more than 2003 Toyota Sienna. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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 2006 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2003 Toyota Sienna, 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, 2006 Cadillac STS (342 Nm @ 3200 RPM) has 48 more torque (in Nm) than 2003 Toyota Sienna. (294 Nm @ 4300 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 Toyota Sienna.
Compare all specifications:
| 2006 Cadillac STS | 2003 Toyota Sienna | |
| Make | Cadillac | Toyota |
| Model | STS | Sienna |
| Year Released | 2006 | 2003 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3563 cc | 2997 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 253 HP | 173 HP |
| Engine RPM | 6500 RPM | 5400 RPM |
| Torque | 342 Nm | 294 Nm |
| Torque RPM | 3200 RPM | 4300 RPM |
| Engine Bore Size | 94 mm | 87.5 mm |
| Engine Stroke Size | 85.6 mm | 83 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1782 kg | 1705 kg |
| Vehicle Length | 4990 mm | 4920 mm |
| Vehicle Width | 1850 mm | 1870 mm |
| Vehicle Height | 1470 mm | 1720 mm |
| Wheelbase Size | 2960 mm | 2910 mm |
