2003 Alfa Romeo 156 vs. 2005 Audi S4
To start off, 2005 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 222 more horse power than 2003 Alfa Romeo 156. (118 HP @ 6200 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 430 kg more than 2003 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 264 more torque (in Nm) than 2003 Alfa Romeo 156. (146 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2005 Audi S4 | |
| Make | Alfa Romeo | Audi |
| Model | 156 | S4 |
| Year Released | 2003 | 2005 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1597 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 118 HP | 340 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 146 Nm | 410 Nm |
| Engine Bore Size | 82 mm | 85 mm |
| Engine Stroke Size | 75.6 mm | 93 mm |
| Engine Compression Ratio | 10.3:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1340 kg | 1770 kg |
| Vehicle Length | 4450 mm | 4550 mm |
| Vehicle Width | 1750 mm | 1770 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2600 mm | 2770 mm |
| Fuel Tank Capacity | 63 L | 66 L |
