2003 Alfa Romeo 166 vs. 2009 Audi RS6
To start off, 2009 Audi RS6 is newer by 6 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 4,991 cc (10 cylinders), 2009 Audi RS6 is equipped with a bigger engine. In terms of performance, 2009 Audi RS6 (572 HP @ 6250 RPM) has 399 more horse power than 2003 Alfa Romeo 166. (173 HP @ 4000 RPM) In normal driving conditions, 2009 Audi RS6 should accelerate faster than 2003 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS6 weights approximately 448 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 2009 Audi RS6 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, 2009 Audi RS6 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, 2009 Audi RS6 (650 Nm @ 1500 RPM) has 320 more torque (in Nm) than 2003 Alfa Romeo 166. (330 Nm @ 1750 RPM). This means 2009 Audi RS6 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 | 2009 Audi RS6 | |
| Make | Alfa Romeo | Audi |
| Model | 166 | RS6 |
| Year Released | 2003 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4991 cc |
| Engine Cylinders | 5 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 572 HP |
| Engine RPM | 4000 RPM | 6250 RPM |
| Torque | 330 Nm | 650 Nm |
| Torque RPM | 1750 RPM | 1500 RPM |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 213 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 4.6 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1580 kg | 2028 kg |
| Vehicle Length | 4730 mm | 4930 mm |
| Vehicle Width | 1810 mm | 1900 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2710 mm | 2850 mm |
| Fuel Consumption Overall | 8.9 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 69 L | 80 L |
