2007 Fiat Siena vs. 2010 Cadillac STS
To start off, 2010 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2007 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2007 Fiat Siena would be higher. At 3,600 cc (6 cylinders), 2010 Cadillac STS is equipped with a bigger engine. In terms of performance, 2010 Cadillac STS (302 HP @ 6300 RPM) has 202 more horse power than 2007 Fiat Siena. (100 HP @ 5500 RPM) In normal driving conditions, 2010 Cadillac STS should accelerate faster than 2007 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2010 Cadillac STS weights approximately 732 kg more than 2007 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2010 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 2010 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2007 Fiat Siena, 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, 2010 Cadillac STS (368 Nm @ 5200 RPM) has 293 more torque (in Nm) than 2007 Fiat Siena. (75 Nm @ 5500 RPM). This means 2010 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2007 Fiat Siena. 2010 Cadillac STS has automatic transmission and 2007 Fiat Siena has manual transmission. 2007 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2010 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Fiat Siena | 2010 Cadillac STS | |
| Make | Fiat | Cadillac |
| Model | Siena | STS |
| Year Released | 2007 | 2010 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1581 cc | 3600 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 100 HP | 302 HP |
| Engine RPM | 5500 RPM | 6300 RPM |
| Torque | 75 Nm | 368 Nm |
| Torque RPM | 5500 RPM | 5200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1070 kg | 1802 kg |
| Vehicle Width | 1640 mm | 1844 mm |
| Vehicle Height | 1440 mm | 1463 mm |
| Wheelbase Size | 2380 mm | 2957 mm |
| Fuel Tank Capacity | 54 L | 64 L |
