2005 Audi A4 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 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 3,600 cc (6 cylinders), 2009 Porsche 911 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (473 HP @ 6000 RPM) has 345 more horse power than 2005 Audi A4. (128 HP @ 4000 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 60 kg more than 2009 Porsche 911.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 911 (620 Nm @ 1950 RPM) has 310 more torque (in Nm) than 2005 Audi A4. (310 Nm @ 1900 RPM). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4. 2009 Porsche 911 has automatic transmission and 2005 Audi A4 has manual transmission. 2005 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Porsche 911 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A4 | 2009 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 1896 cc | 3600 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 128 HP | 473 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 310 Nm | 620 Nm |
| Torque RPM | 1900 RPM | 1950 RPM |
| Engine Compression Ratio | 19.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 205 km/hour | 305 km/hour |
| Acceleration 0-100mph | 10.1 seconds | 3.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1485 kg | 1425 kg |
| Vehicle Length | 4550 mm | 4460 mm |
| Vehicle Width | 1780 mm | 1310 mm |
| Vehicle Height | 1430 mm | 1860 mm |
| Wheelbase Size | 2580 mm | 2360 mm |
| Fuel Consumption Overall | 6.6 L/100km | 13.7 L/100km |
| Fuel Tank Capacity | 66 L | 67 L |
