2009 BMW X5 vs. 2006 Fiat Siena
To start off, 2009 BMW X5 is newer by 3 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 4,799 cc (8 cylinders), 2009 BMW X5 is equipped with a bigger engine. In terms of performance, 2009 BMW X5 (350 HP @ 6300 RPM) has 250 more horse power than 2006 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2009 BMW X5 should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Fiat Siena weights approximately 258 kg more than 2009 BMW X5.
Because 2009 BMW X5 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, 2009 BMW X5 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, 2009 BMW X5 (476 Nm @ 3400 RPM) has 402 more torque (in Nm) than 2006 Fiat Siena. (74 Nm @ 5500 RPM). This means 2009 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2009 BMW X5 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. 2009 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW X5 | 2006 Fiat Siena | |
| Make | BMW | Fiat |
| Model | X5 | Siena |
| Year Released | 2009 | 2006 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1581 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 350 HP | 100 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 476 Nm | 74 Nm |
| Torque RPM | 3400 RPM | 5500 RPM |
| Acceleration 0-100mph | 6.5 seconds | 11.1 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1525 kg | 1783 kg |
| Vehicle Length | 4860 mm | 3830 mm |
| Vehicle Width | 1940 mm | 1640 mm |
| Vehicle Height | 1740 mm | 1440 mm |
| Wheelbase Size | 2940 mm | 2380 mm |
| Fuel Consumption Overall | 12.5 L/100km | 8 L/100km |
| Fuel Tank Capacity | 85 L | 54 L |
