2004 BMW 730 vs. 2006 Fiat Siena
To start off, 2006 Fiat Siena is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW 730. In addition, the cost of maintenance, including insurance, on 2004 BMW 730 would be higher. At 2,979 cc (6 cylinders), 2004 BMW 730 is equipped with a bigger engine. In terms of performance, 2004 BMW 730 (225 HP @ 6000 RPM) has 153 more horse power than 2006 Fiat Siena. (72 HP @ 6000 RPM). In normal driving conditions, 2004 BMW 730 should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 730 weights approximately 620 kg more than 2006 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 BMW 730 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 2004 BMW 730. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 2004 BMW 730 (300 Nm @ 3500 RPM) has 198 more torque (in Nm) than 2006 Fiat Siena. (102 Nm @ 3250 RPM). This means 2004 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2004 BMW 730 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. 2004 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 BMW 730 | 2006 Fiat Siena | |
| Make | BMW | Fiat |
| Model | 730 | Siena |
| Year Released | 2004 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 1242 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 225 HP | 72 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 300 Nm | 102 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Engine Bore Size | 84 mm | 70.8 mm |
| Engine Stroke Size | 90 mm | 78.8 mm |
| Engine Compression Ratio | 10.2:1 | 9.1:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1790 kg | 1170 kg |
| Vehicle Length | 5040 mm | 3830 mm |
| Vehicle Width | 1910 mm | 1640 mm |
| Vehicle Height | 1500 mm | 1440 mm |
| Wheelbase Size | 3000 mm | 2380 mm |
| Fuel Tank Capacity | 63 L | 54 L |
