2005 Audi A3 vs. 2003 Porsche 911
To start off, 2005 Audi A3 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Porsche 911. In addition, the cost of maintenance, including insurance, on 2003 Porsche 911 would be higher. At 3,600 cc (6 cylinders), 2003 Porsche 911 is equipped with a bigger engine. In terms of performance, 2003 Porsche 911 (443 HP @ 6000 RPM) has 295 more horse power than 2005 Audi A3. (148 HP @ 6000 RPM) In normal driving conditions, 2003 Porsche 911 should accelerate faster than 2005 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2003 Porsche 911 weights approximately 389 kg more than 2005 Audi A3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A3. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Porsche 911 (620 Nm @ 2700 RPM) has 420 more torque (in Nm) than 2005 Audi A3. (200 Nm @ 3500 RPM). This means 2003 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A3.
Compare all specifications:
| 2005 Audi A3 | 2003 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A3 | 911 |
| Year Released | 2005 | 2003 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 1983 cc | 3600 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 148 HP | 443 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 200 Nm | 620 Nm |
| Torque RPM | 3500 RPM | 2700 RPM |
| Engine Bore Size | 82.5 mm | 100 mm |
| Engine Stroke Size | 92.8 mm | 76.4 mm |
| Engine Compression Ratio | 11.5:1 | 9.4:1 |
| Top Speed | 214 km/hour | 300 km/hour |
| Acceleration 0-100mph | 9.1 seconds | 4.6 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1315 kg | 1704 kg |
| Vehicle Length | 4210 mm | 4440 mm |
| Vehicle Width | 1770 mm | 1840 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2360 mm |
| Fuel Consumption Overall | 7 L/100km | 14.2 L/100km |
| Fuel Tank Capacity | 55 L | 64 L |
