2009 Audi A4 vs. 2007 Porsche 911
To start off, 2009 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Porsche 911. In addition, the cost of maintenance, including insurance, on 2007 Porsche 911 would be higher. At 3,822 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (355 HP @ 6600 RPM) has 138 more horse power than 2009 Audi A4. (217 HP @ 5900 RPM) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Porsche 911 weights approximately 20 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2007 Porsche 911 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, 2007 Porsche 911 (400 Nm @ 4600 RPM) has 100 more torque (in Nm) than 2009 Audi A4. (300 Nm @ 2200 RPM). This means 2007 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2007 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 1983 cc | 3822 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 217 HP | 355 HP |
| Engine RPM | 5900 RPM | 6600 RPM |
| Torque | 300 Nm | 400 Nm |
| Torque RPM | 2200 RPM | 4600 RPM |
| Engine Bore Size | 82.5 mm | 100 mm |
| Engine Stroke Size | 92.8 mm | 76 mm |
| Engine Compression Ratio | 10.5:1 | 11.8:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 247 km/hour | 288 km/hour |
| Acceleration 0-100mph | 7.1 seconds | 4.9 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1455 kg | 1475 kg |
| Vehicle Length | 4610 mm | 4430 mm |
| Vehicle Width | 1780 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1310 mm |
| Wheelbase Size | 2660 mm | 2360 mm |
| Fuel Consumption Overall | 8.1 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 67 L |
