2003 Alfa Romeo 166 vs. 2006 Audi RS4
To start off, 2006 Audi RS4 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 166 would be higher. At 4,162 cc (8 cylinders), 2006 Audi RS4 is equipped with a bigger engine. In terms of performance, 2006 Audi RS4 (414 HP @ 7800 RPM) has 266 more horse power than 2003 Alfa Romeo 166. (148 HP @ 4000 RPM) In normal driving conditions, 2006 Audi RS4 should accelerate faster than 2003 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi RS4 weights approximately 168 kg more than 2003 Alfa Romeo 166. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Alfa Romeo 166. In wet, icy, snow, or gravel driving conditions, 2006 Audi RS4 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, 2006 Audi RS4 (430 Nm @ 5500 RPM) has 130 more torque (in Nm) than 2003 Alfa Romeo 166. (300 Nm @ 1800 RPM). This means 2006 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 166.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2006 Audi RS4 | |
| Make | Alfa Romeo | Audi |
| Model | 166 | RS4 |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4162 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 414 HP |
| Engine RPM | 4000 RPM | 7800 RPM |
| Torque | 300 Nm | 430 Nm |
| Torque RPM | 1800 RPM | 5500 RPM |
| Engine Bore Size | 82 mm | 84.5 mm |
| Engine Stroke Size | 90.4 mm | 92.8 mm |
| Engine Compression Ratio | 18.5:1 | 12.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 210 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.9 seconds | 4.8 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1542 kg | 1710 kg |
| Vehicle Length | 4730 mm | 4590 mm |
| Vehicle Width | 1810 mm | 1820 mm |
| Vehicle Height | 1420 mm | 1420 mm |
| Wheelbase Size | 2600 mm | 2660 mm |
| Fuel Consumption Overall | 7.5 L/100km | 13.5 L/100km |
| Fuel Tank Capacity | 69 L | 70 L |
