2003 Fiat Siena vs. 2005 Lexus RX
To start off, 2005 Lexus RX is newer by 2 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 3,310 cc (6 cylinders), 2005 Lexus RX is equipped with a bigger engine. In terms of performance, 2005 Lexus RX (231 HP @ 5800 RPM) has 132 more horse power than 2003 Fiat Siena. (99 HP @ 6000 RPM) In normal driving conditions, 2005 Lexus RX should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2005 Lexus RX weights approximately 701 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.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2005 Lexus RX (328 Nm) has 182 more torque (in Nm) than 2003 Fiat Siena. (146 Nm). This means 2005 Lexus RX will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena.
Compare all specifications:
| 2003 Fiat Siena | 2005 Lexus RX | |
| Make | Fiat | Lexus |
| Model | Siena | RX |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1596 cc | 3310 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 231 HP |
| Engine RPM | 6000 RPM | 5800 RPM |
| Torque | 146 Nm | 328 Nm |
| Engine Bore Size | 80.5 mm | 92 mm |
| Engine Stroke Size | 78.4 mm | 83 mm |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1050 kg | 1751 kg |
| Vehicle Length | 4110 mm | 4740 mm |
| Vehicle Width | 1630 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1690 mm |
| Wheelbase Size | 2380 mm | 2720 mm |
