2003 BMW X3 vs. 2010 Fiat Siena
To start off, 2010 Fiat Siena is newer by 7 year(s). Which means there will be less support and parts availability for 2003 BMW X3. In addition, the cost of maintenance, including insurance, on 2003 BMW X3 would be higher. At 2,494 cc (6 cylinders), 2003 BMW X3 is equipped with a bigger engine. In terms of performance, 2003 BMW X3 (189 HP @ 6000 RPM) has 89 more horse power than 2010 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2003 BMW X3 should accelerate faster than 2010 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X3 weights approximately 741 kg more than 2010 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2010 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2003 BMW X3 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, 2003 BMW X3 (245 Nm @ 3500 RPM) has 171 more torque (in Nm) than 2010 Fiat Siena. (74 Nm @ 5500 RPM). This means 2003 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2010 Fiat Siena.
Compare all specifications:
| 2003 BMW X3 | 2010 Fiat Siena | |
| Make | BMW | Fiat |
| Model | X3 | Siena |
| Year Released | 2003 | 2010 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 1581 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 100 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 245 Nm | 74 Nm |
| Torque RPM | 3500 RPM | 5500 RPM |
| Engine Bore Size | 84 mm | 86.4 mm |
| Engine Stroke Size | 75 mm | 67.4 mm |
| Engine Compression Ratio | 10.5:1 | 9.5:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1074 kg |
| Vehicle Length | 4570 mm | 3550 mm |
| Vehicle Width | 1860 mm | 1640 mm |
| Vehicle Height | 1680 mm | 1440 mm |
| Wheelbase Size | 2890 mm | 2380 mm |
| Fuel Tank Capacity | 67 L | 54 L |
