2011 BMW X6 vs. 2009 Fiat Siena
To start off, 2011 BMW X6 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2009 Fiat Siena would be higher. At 4,400 cc (8 cylinders), 2011 BMW X6 is equipped with a bigger engine. In terms of performance, 2011 BMW X6 (480 HP @ 5500 RPM) has 374 more horse power than 2009 Fiat Siena. (106 HP @ 5500 RPM). In normal driving conditions, 2011 BMW X6 should accelerate faster than 2009 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X6 weights approximately 1520 kg more than 2009 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 BMW X6 is all wheel drive (AWD), it will have significant more traction and grip than 2009 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2011 BMW X6 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, 2011 BMW X6 (779 Nm @ 1750 RPM) has 639 more torque (in Nm) than 2009 Fiat Siena. (140 Nm @ 4000 RPM). This means 2011 BMW X6 will have an easier job in driving up hills or pulling heavy equipment than 2009 Fiat Siena. 2011 BMW X6 has automatic transmission and 2009 Fiat Siena has manual transmission. 2009 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 BMW X6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2011 BMW X6 | 2009 Fiat Siena | |
| Make | BMW | Fiat |
| Model | X6 | Siena |
| Year Released | 2011 | 2009 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4400 cc | 1581 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 480 HP | 106 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 779 Nm | 140 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Fuel Type | Gasoline / Electric Hybrid | Gasoline |
| Drive Type | AWD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2615 kg | 1095 kg |
| Vehicle Length | 4879 mm | 3550 mm |
| Vehicle Width | 1984 mm | 1640 mm |
| Vehicle Height | 1689 mm | 1490 mm |
| Wheelbase Size | 2934 mm | 2370 mm |
| Fuel Tank Capacity | 85 L | 47 L |
