1999 Audi A4 vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 would be higher. At 3,605 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (444 HP @ 5700 RPM) has 197 more horse power than 1999 Audi A4. (247 HP @ 5700 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 315 kg more than 1999 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Audi A4. In wet, icy, snow, or gravel driving conditions, 2005 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.
Compare all specifications:
| 1999 Audi A4 | 2005 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 1999 | 2005 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 1779 cc | 3605 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 247 HP | 444 HP |
| Engine RPM | 5700 RPM | 5700 RPM |
| Engine Bore Size | 81 mm | 100 mm |
| Engine Stroke Size | 86.4 mm | 76 mm |
| Engine Compression Ratio | 9.5:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 210 km/hour | 307 km/hour |
| Acceleration 0-100mph | 9.8 seconds | 4.6 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1345 kg | 1660 kg |
| Vehicle Length | 4480 mm | 4440 mm |
| Vehicle Width | 1740 mm | 1840 mm |
| Vehicle Height | 1420 mm | 1300 mm |
| Wheelbase Size | 2630 mm | 2360 mm |
| Fuel Tank Capacity | 62 L | 63 L |
