2005 Audi A4 vs. 2009 Porsche Boxster
To start off, 2009 Porsche Boxster is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A4. In addition, the cost of maintenance, including insurance, on 2005 Audi A4 would be higher. At 3,387 cc (6 cylinders), 2009 Porsche Boxster is equipped with a bigger engine. In terms of performance, 2009 Porsche Boxster (291 HP @ 6250 RPM) has 68 more horse power than 2005 Audi A4. (223 HP @ 6500 RPM) In normal driving conditions, 2009 Porsche Boxster should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 340 kg more than 2009 Porsche Boxster.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Porsche Boxster. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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 Porsche Boxster (340 Nm) has 40 more torque (in Nm) than 2005 Audi A4. (300 Nm). This means 2009 Porsche Boxster will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 2009 Porsche Boxster | |
| Make | Audi | Porsche |
| Model | A4 | Boxster |
| Year Released | 2005 | 2009 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 2983 cc | 3387 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 223 HP | 291 HP |
| Engine RPM | 6500 RPM | 6250 RPM |
| Torque | 300 Nm | 340 Nm |
| Engine Bore Size | 83.1 mm | 93 mm |
| Engine Stroke Size | 93 mm | 78 mm |
| Engine Compression Ratio | 10.1:1 | 11.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1695 kg | 1355 kg |
| Vehicle Length | 4550 mm | 4330 mm |
| Vehicle Width | 1770 mm | 1300 mm |
| Vehicle Height | 1430 mm | 1790 mm |
| Wheelbase Size | 2580 mm | 2420 mm |
| Fuel Consumption Overall | 11.8 L/100km | 10.4 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
