2009 Audi A4 vs. 2005 Porsche 911
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 3,600 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (377 HP @ 7400 RPM) has 155 more horse power than 2009 Audi A4. (222 HP @ 4000 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 155 kg more than 2005 Porsche 911.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Porsche 911. In wet, icy, snow, or gravel driving conditions, 2009 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 Audi A4 (450 Nm @ 1400 RPM) has 65 more torque (in Nm) than 2005 Porsche 911. (385 Nm @ 5000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2009 Audi A4 | 2005 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2965 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 222 HP | 377 HP |
| Engine RPM | 4000 RPM | 7400 RPM |
| Torque | 450 Nm | 385 Nm |
| Torque RPM | 1400 RPM | 5000 RPM |
| Engine Bore Size | 83 mm | 100 mm |
| Engine Stroke Size | 91.4 mm | 76.4 mm |
| Engine Compression Ratio | 17.0:1 | 11.7:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 235 km/hour | 306 km/hour |
| Acceleration 0-100mph | 7.2 seconds | 4.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1610 kg | 1455 kg |
| Vehicle Length | 4550 mm | 4440 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1280 mm |
| Wheelbase Size | 2660 mm | 2360 mm |
| Fuel Consumption Overall | 7.6 L/100km | 13 L/100km |
| Fuel Tank Capacity | 70 L | 89 L |
