2004 BMW Z4 vs. 2002 Fiat Siena
To start off, 2004 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2002 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2002 Fiat Siena would be higher. At 2,171 cc (6 cylinders), 2004 BMW Z4 is equipped with a bigger engine. In terms of performance, 2004 BMW Z4 (168 HP @ 6250 RPM) has 69 more horse power than 2002 Fiat Siena. (99 HP @ 6000 RPM). In normal driving conditions, 2004 BMW Z4 should accelerate faster than 2002 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW Z4 weights approximately 275 kg more than 2002 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 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 2004 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2002 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 Z4 (210 Nm @ 3500 RPM) has 64 more torque (in Nm) than 2002 Fiat Siena. (146 Nm @ 4000 RPM). This means 2004 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2002 Fiat Siena.
Compare all specifications:
| 2004 BMW Z4 | 2002 Fiat Siena | |
| Make | BMW | Fiat |
| Model | Z4 | Siena |
| Year Released | 2004 | 2002 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 1596 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 168 HP | 99 HP |
| Engine RPM | 6250 RPM | 6000 RPM |
| Torque | 210 Nm | 146 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Fuel Type | Gasoline - Premium | 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 | 1325 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 |
