2007 Audi A4 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 3,599 cc (6 cylinders), 2009 Porsche 911 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (473 HP @ 6000 RPM) has 221 more horse power than 2007 Audi A4. (252 HP @ 5100 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 168 kg more than 2009 Porsche 911.
Let's talk about torque, 2009 Porsche 911 (620 Nm @ 2700 RPM) has 290 more torque (in Nm) than 2007 Audi A4. (330 Nm @ 3250 RPM). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 2009 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3123 cc | 3599 cc |
| Horse Power | 252 HP | 473 HP |
| Engine RPM | 5100 RPM | 6000 RPM |
| Torque | 330 Nm | 620 Nm |
| Torque RPM | 3250 RPM | 2700 RPM |
| Engine Bore Size | 84.5 mm | 100 mm |
| Engine Stroke Size | 92.8 mm | 76.4 mm |
| Engine Compression Ratio | 12.5:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 310 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 4.2 seconds |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1698 kg | 1530 kg |
| Vehicle Length | 4580 mm | 4440 mm |
| Vehicle Width | 1400 mm | 1300 mm |
| Vehicle Height | 1780 mm | 1840 mm |
| Wheelbase Size | 2660 mm | 2360 mm |
| Fuel Consumption Overall | 11 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 70 L | 64 L |
