2006 Fiat Siena vs. 2007 Lexus GX
To start off, 2007 Lexus GX is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2006 Fiat Siena would be higher. At 4,670 cc (8 cylinders), 2007 Lexus GX is equipped with a bigger engine. In terms of performance, 2007 Lexus GX (263 HP @ 5400 RPM) has 191 more horse power than 2006 Fiat Siena. (72 HP @ 6000 RPM) In normal driving conditions, 2007 Lexus GX should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 Lexus GX weights approximately 572 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 2007 Lexus GX is four wheel drive (4WD), it will have significant more traction and grip than 2006 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2007 Lexus GX 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 Lexus GX (438 Nm @ 3400 RPM) has 336 more torque (in Nm) than 2006 Fiat Siena. (102 Nm @ 3250 RPM). This means 2007 Lexus GX will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2007 Lexus GX 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. 2007 Lexus GX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Fiat Siena | 2007 Lexus GX | |
| Make | Fiat | Lexus |
| Model | Siena | GX |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1242 cc | 4670 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 72 HP | 263 HP |
| Engine RPM | 6000 RPM | 5400 RPM |
| Torque | 102 Nm | 438 Nm |
| Torque RPM | 3250 RPM | 3400 RPM |
| Engine Bore Size | 70.8 mm | 94 mm |
| Engine Stroke Size | 78.8 mm | 84.1 mm |
| Engine Compression Ratio | 9.1:1 | 10.0:1 |
| Top Speed | 164 km/hour | 180 km/hour |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 8 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1170 kg | 1742 kg |
| Vehicle Length | 3830 mm | 4790 mm |
| Vehicle Width | 1640 mm | 1890 mm |
| Vehicle Height | 1440 mm | 1900 mm |
| Wheelbase Size | 2380 mm | 2800 mm |
| Fuel Consumption Overall | 7.8 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 54 L | 87 L |
