2009 Audi S4 vs. 2011 Alfa Romeo 159
To start off, 2011 Alfa Romeo 159 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Audi S4. In addition, the cost of maintenance, including insurance, on 2009 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 84 more horse power than 2011 Alfa Romeo 159. (256 HP @ 6200 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2011 Alfa Romeo 159. With that said, vehicle weight also plays an important factor in acceleration. 2011 Alfa Romeo 159 weights approximately 918 kg more than 2009 Audi S4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2009 Audi S4 (410 Nm @ 3500 RPM) has 88 more torque (in Nm) than 2011 Alfa Romeo 159. (322 Nm @ 4500 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2011 Alfa Romeo 159.
Compare all specifications:
| 2009 Audi S4 | 2011 Alfa Romeo 159 | |
| Make | Audi | Alfa Romeo |
| Model | S4 | 159 |
| Year Released | 2009 | 2011 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3195 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 256 HP |
| Engine RPM | 7000 RPM | 6200 RPM |
| Torque | 410 Nm | 322 Nm |
| Torque RPM | 3500 RPM | 4500 RPM |
| Engine Compression Ratio | 18.0:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1848 kg |
| Vehicle Length | 4580 mm | 4670 mm |
| Vehicle Width | 1780 mm | 1830 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2710 mm |
| Fuel Consumption City | 18.1 L/100km | 15.9 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
