2009 BMW Z4 vs. 2003 Fiat Siena
To start off, 2009 BMW Z4 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2003 Fiat Siena would be higher. At 2,979 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (335 HP @ 7900 RPM) has 236 more horse power than 2003 Fiat Siena. (99 HP @ 6000 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 475 kg more than 2003 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW Z4 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 2009 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2003 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, 2009 BMW Z4 (315 Nm @ 2750 RPM) has 169 more torque (in Nm) than 2003 Fiat Siena. (146 Nm @ 4000 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena.
Compare all specifications:
2009 BMW Z4 | 2003 Fiat Siena | |
Make | BMW | Fiat |
Model | Z4 | Siena |
Year Released | 2009 | 2003 |
Body Type | Convertible | Sedan |
Engine Position | Front | Front |
Engine Size | 2979 cc | 1596 cc |
Engine Cylinders | 6 cylinders | 4 cylinders |
Engine Type | in-line | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 335 HP | 99 HP |
Engine RPM | 7900 RPM | 6000 RPM |
Torque | 315 Nm | 146 Nm |
Torque RPM | 2750 RPM | 4000 RPM |
Fuel Type | Gasoline | Gasoline |
Drive Type | Rear | Front |
Transmission Type | Manual | Manual |
Number of Seats | 2 seats | 5 seats |
Number of Doors | 2 doors | 4 doors |
Vehicle Weight | 1525 kg | 1050 kg |
Vehicle Length | 4100 mm | 4110 mm |
Vehicle Width | 1790 mm | 1630 mm |
Vehicle Height | 1310 mm | 1470 mm |
Wheelbase Size | 2500 mm | 2380 mm |