2008 Audi A8 vs. 2006 Fiat Siena
To start off, 2008 Audi A8 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 2,967 cc (6 cylinders), 2008 Audi A8 is equipped with a bigger engine. In terms of performance, 2008 Audi A8 (230 HP @ 4000 RPM) has 130 more horse power than 2006 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2008 Audi A8 should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 47 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 Audi A8 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 Audi A8 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 Audi A8 (450 Nm @ 1400 RPM) has 376 more torque (in Nm) than 2006 Fiat Siena. (74 Nm @ 5500 RPM). This means 2008 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2008 Audi A8 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 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Audi A8 | 2006 Fiat Siena | |
| Make | Audi | Fiat |
| Model | A8 | Siena |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 1581 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 230 HP | 100 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 450 Nm | 74 Nm |
| Torque RPM | 1400 RPM | 5500 RPM |
| Engine Compression Ratio | 17.0:1 | 9.5:1 |
| Acceleration 0-100mph | 7.9 seconds | 11.1 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1830 kg | 1783 kg |
| Vehicle Length | 5190 mm | 3830 mm |
| Vehicle Width | 1900 mm | 1640 mm |
| Vehicle Height | 1450 mm | 1440 mm |
| Wheelbase Size | 3080 mm | 2380 mm |
| Fuel Consumption Overall | 8.4 L/100km | 8 L/100km |
| Fuel Tank Capacity | 90 L | 54 L |
