2009 Audi S5 vs. 2011 Porsche Boxster
To start off, 2011 Porsche Boxster is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Audi S5. In addition, the cost of maintenance, including insurance, on 2009 Audi S5 would be higher. At 4,163 cc (8 cylinders), 2009 Audi S5 is equipped with a bigger engine. In terms of performance, 2009 Audi S5 (354 HP @ 6800 RPM) has 44 more horse power than 2011 Porsche Boxster. (310 HP @ 6400 RPM). In normal driving conditions, 2009 Audi S5 should accelerate faster than 2011 Porsche Boxster. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi S5 weights approximately 419 kg more than 2011 Porsche Boxster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi S5 is four wheel drive (4WD), it will have significant more traction and grip than 2011 Porsche Boxster. In wet, icy, snow, or gravel driving conditions, 2009 Audi S5 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 S5 (441 Nm @ 3500 RPM) has 81 more torque (in Nm) than 2011 Porsche Boxster. (360 Nm @ 4400 RPM). This means 2009 Audi S5 will have an easier job in driving up hills or pulling heavy equipment than 2011 Porsche Boxster.
Compare all specifications:
| 2009 Audi S5 | 2011 Porsche Boxster | |
| Make | Audi | Porsche |
| Model | S5 | Boxster |
| Year Released | 2009 | 2011 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 4163 cc | 3400 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 354 HP | 310 HP |
| Engine RPM | 6800 RPM | 6400 RPM |
| Torque | 441 Nm | 360 Nm |
| Torque RPM | 3500 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1770 kg | 1351 kg |
| Vehicle Length | 4640 mm | 4371 mm |
| Vehicle Width | 1990 mm | 1801 mm |
| Vehicle Height | 1380 mm | 1293 mm |
| Wheelbase Size | 2760 mm | 2416 mm |
| Fuel Consumption Highway | 11.2 L/100km | 9 L/100km |
| Fuel Consumption City | 16.8 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
