2006 Alfa Romeo 156 vs. 2003 Audi RS6
To start off, 2006 Alfa Romeo 156 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Audi RS6. In addition, the cost of maintenance, including insurance, on 2003 Audi RS6 would be higher. At 4,163 cc (8 cylinders), 2003 Audi RS6 is equipped with a bigger engine. In terms of performance, 2003 Audi RS6 (444 HP @ 6300 RPM) has 271 more horse power than 2006 Alfa Romeo 156. (173 HP @ 4000 RPM) In normal driving conditions, 2003 Audi RS6 should accelerate faster than 2006 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi RS6 weights approximately 400 kg more than 2006 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Alfa Romeo 156. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Audi RS6 (560 Nm @ 1950 RPM) has 175 more torque (in Nm) than 2006 Alfa Romeo 156. (385 Nm @ 2000 RPM). This means 2003 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo 156.
Compare all specifications:
| 2006 Alfa Romeo 156 | 2003 Audi RS6 | |
| Make | Alfa Romeo | Audi |
| Model | 156 | RS6 |
| Year Released | 2006 | 2003 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4163 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 173 HP | 444 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 385 Nm | 560 Nm |
| Torque RPM | 2000 RPM | 1950 RPM |
| Engine Bore Size | 82 mm | 84.5 mm |
| Engine Stroke Size | 90.4 mm | 93 mm |
| Engine Compression Ratio | 18.5:1 | 9.3:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 225 km/hour | 250 km/hour |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1510 kg | 1910 kg |
| Vehicle Length | 4440 mm | 4860 mm |
| Vehicle Width | 1750 mm | 1860 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2550 mm | 2760 mm |
| Fuel Consumption Overall | 6.6 L/100km | 14.6 L/100km |
| Fuel Tank Capacity | 63 L | 82 L |
