2006 Fiat Siena vs. 2007 Jeep Commander
To start off, 2007 Jeep Commander is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2006 Fiat Siena would be higher. At 4,701 cc (8 cylinders), 2007 Jeep Commander is equipped with a bigger engine. In terms of performance, 2007 Jeep Commander (236 HP @ 4500 RPM) has 168 more horse power than 2006 Fiat Siena. (68 HP @ 4600 RPM) In normal driving conditions, 2007 Jeep Commander should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 Jeep Commander weights approximately 32 kg more than 2006 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Jeep Commander is four wheel drive (4WD), it will have significant more traction and grip than 2006 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2007 Jeep Commander will offer significantly more control. 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 Jeep Commander (414 Nm @ 3600 RPM) has 278 more torque (in Nm) than 2006 Fiat Siena. (136 Nm @ 2500 RPM). This means 2007 Jeep Commander will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2007 Jeep Commander has automatic transmission and 2006 Fiat Siena has manual transmission. 2006 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Jeep Commander will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Fiat Siena | 2007 Jeep Commander | |
| Make | Fiat | Jeep |
| Model | Siena | Commander |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1697 cc | 4701 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 68 HP | 236 HP |
| Engine RPM | 4600 RPM | 4500 RPM |
| Torque | 136 Nm | 414 Nm |
| Torque RPM | 2500 RPM | 3600 RPM |
| Engine Bore Size | 82.6 mm | 93 mm |
| Engine Stroke Size | 79.2 mm | 86.7 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1645 kg | 1677 kg |
| Vehicle Length | 4000 mm | 4790 mm |
| Vehicle Height | 1700 mm | 1830 mm |
| Wheelbase Size | 2550 mm | 2790 mm |
| Fuel Consumption Overall | 6.9 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 47 L | 80 L |
