2007 BMW X5 vs. 2009 Fiat Siena
To start off, 2009 Fiat Siena is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW X5. In addition, the cost of maintenance, including insurance, on 2007 BMW X5 would be higher. At 2,979 cc (6 cylinders), 2007 BMW X5 is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (228 HP @ 5900 RPM) has 122 more horse power than 2009 Fiat Siena. (106 HP @ 5500 RPM). In normal driving conditions, 2007 BMW X5 should accelerate faster than 2009 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 1009 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 2007 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 BMW X5 (300 Nm @ 3500 RPM) has 160 more torque (in Nm) than 2009 Fiat Siena. (140 Nm @ 4000 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2009 Fiat Siena. 2007 BMW X5 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. 2007 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW X5 | 2009 Fiat Siena | |
| Make | BMW | Fiat |
| Model | X5 | Siena |
| Year Released | 2007 | 2009 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 1581 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 106 HP |
| Engine RPM | 5900 RPM | 5500 RPM |
| Torque | 300 Nm | 140 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.1 mm | 86.5 mm |
| Engine Stroke Size | 89.6 mm | 67.4 mm |
| Engine Compression Ratio | 10.2:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 10 seconds | 10.5 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2104 kg | 1095 kg |
| Vehicle Length | 4670 mm | 3550 mm |
| Vehicle Width | 1710 mm | 1640 mm |
| Vehicle Height | 1880 mm | 1490 mm |
| Wheelbase Size | 2830 mm | 2370 mm |
| Fuel Consumption Overall | 14.5 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 85 L | 47 L |
