2003 Fiat Siena vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 4 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 3,594 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (321 HP @ 6800 RPM) has 262 more horse power than 2003 Fiat Siena. (59 HP @ 5200 RPM) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 Porsche 911 weights approximately 410 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 2007 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2007 Porsche 911 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, 2007 Porsche 911 (370 Nm @ 4250 RPM) has 267 more torque (in Nm) than 2003 Fiat Siena. (103 Nm @ 2500 RPM). This means 2007 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena. 2007 Porsche 911 has automatic transmission and 2003 Fiat Siena has manual transmission. 2003 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Porsche 911 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Fiat Siena | 2007 Porsche 911 | |
| Make | Fiat | Porsche |
| Model | Siena | 911 |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 1301 cc | 3594 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 59 HP | 321 HP |
| Engine RPM | 5200 RPM | 6800 RPM |
| Torque | 103 Nm | 370 Nm |
| Torque RPM | 2500 RPM | 4250 RPM |
| Engine Bore Size | 70.8 mm | 96 mm |
| Engine Stroke Size | 78.9 mm | 82.8 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1040 kg | 1450 kg |
| Vehicle Length | 4110 mm | 4430 mm |
| Vehicle Width | 1630 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1320 mm |
| Wheelbase Size | 2380 mm | 2360 mm |
