2006 Audi A4 vs. 2003 Fiat Siena
To start off, 2006 Audi A4 is newer by 3 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 2,393 cc (6 cylinders), 2006 Audi A4 is equipped with a bigger engine. In terms of performance, 2006 Audi A4 (168 HP @ 6000 RPM) has 99 more horse power than 2003 Fiat Siena. (69 HP @ 4500 RPM). In normal driving conditions, 2006 Audi A4 should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A4 weights approximately 500 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, 2006 Audi A4 (230 Nm @ 3200 RPM) has 102 more torque (in Nm) than 2003 Fiat Siena. (128 Nm @ 2500 RPM). This means 2006 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena.
Compare all specifications:
| 2006 Audi A4 | 2003 Fiat Siena | |
| Make | Audi | Fiat |
| Model | A4 | Siena |
| Year Released | 2006 | 2003 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2393 cc | 1747 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 168 HP | 69 HP |
| Engine RPM | 6000 RPM | 4500 RPM |
| Torque | 230 Nm | 128 Nm |
| Torque RPM | 3200 RPM | 2500 RPM |
| Engine Bore Size | 81 mm | 82.7 mm |
| Engine Stroke Size | 77.4 mm | 79.2 mm |
| Engine Compression Ratio | 11.0:1 | 20.3:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1600 kg | 1100 kg |
| Vehicle Length | 4580 mm | 4110 mm |
| Vehicle Width | 1780 mm | 1630 mm |
| Vehicle Height | 1400 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2380 mm |
