2007 BMW 550 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 550. In addition, the cost of maintenance, including insurance, on 2007 BMW 550 would be higher. At 4,797 cc, 2007 BMW 550 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 550 weights approximately 590 kg more than 2009 Fiat Siena.
Because 2007 BMW 550 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 BMW 550. However, in wet, icy, snow, or gravel driving conditions, 2009 Fiat Siena, being front wheel drive (FWD), will offer much better control with better grip. 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 550 (490 Nm @ 3400 RPM) has 388 more torque (in Nm) than 2009 Fiat Siena. (102 Nm @ 3250 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2009 Fiat Siena. 2007 BMW 550 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 550 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW 550 | 2009 Fiat Siena | |
| Make | BMW | Fiat |
| Model | 550 | Siena |
| Year Released | 2007 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 4797 cc | 1242 cc |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 657 HP | 0 HP |
| Torque | 490 Nm | 102 Nm |
| Torque RPM | 3400 RPM | 3250 RPM |
| Engine Compression Ratio | 10.5:1 | 9.1:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 159 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 13.5 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1660 kg | 1070 kg |
| Vehicle Length | 4850 mm | 3830 mm |
| Vehicle Width | 1470 mm | 1640 mm |
| Vehicle Height | 1850 mm | 1440 mm |
| Wheelbase Size | 2890 mm | 2380 mm |
| Fuel Consumption Overall | 10.8 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 70 L | 54 L |
