2006 Fiat Siena vs. 2008 Infiniti QX56
To start off, 2008 Infiniti QX56 is newer by 2 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 5,550 cc (8 cylinders), 2008 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2008 Infiniti QX56 (320 HP @ 5200 RPM) has 248 more horse power than 2006 Fiat Siena. (72 HP @ 6000 RPM) In normal driving conditions, 2008 Infiniti QX56 should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2008 Infiniti QX56 weights approximately 150 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 2008 Infiniti QX56 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, 2008 Infiniti QX56 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, 2008 Infiniti QX56 (533 Nm @ 3400 RPM) has 431 more torque (in Nm) than 2006 Fiat Siena. (102 Nm @ 3250 RPM). This means 2008 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2008 Infiniti QX56 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. 2008 Infiniti QX56 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Fiat Siena | 2008 Infiniti QX56 | |
| Make | Fiat | Infiniti |
| Model | Siena | QX56 |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1242 cc | 5550 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 72 HP | 320 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 102 Nm | 533 Nm |
| Torque RPM | 3250 RPM | 3400 RPM |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1170 kg | 1320 kg |
| Vehicle Length | 3830 mm | 5260 mm |
| Vehicle Width | 1640 mm | 2030 mm |
| Vehicle Height | 1440 mm | 1960 mm |
| Wheelbase Size | 2380 mm | 3140 mm |
| Fuel Consumption Overall | 7.8 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 54 L | 106 L |
