2005 Audi A4 vs. 2005 Audi A8
To start off, both 2005 Audi A4 and 2005 Audi A8 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 2,976 cc (6 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (218 HP @ 6300 RPM) has 38 more horse power than 2005 Audi A4. (180 HP @ 5700 RPM) In normal driving conditions, 2005 Audi A8 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 575 kg more than 2005 Audi A8.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A8. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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, 2005 Audi A8 (300 Nm @ 8200 RPM) has 60 more torque (in Nm) than 2005 Audi A4. (240 Nm @ 1950 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 2005 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2005 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 2976 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 180 HP | 218 HP |
| Engine RPM | 5700 RPM | 6300 RPM |
| Torque | 240 Nm | 300 Nm |
| Torque RPM | 1950 RPM | 8200 RPM |
| Engine Bore Size | 81 mm | 82.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Engine Compression Ratio | 9.3:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 234 km/hour | 242 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 8.3 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1475 kg | 900 kg |
| Vehicle Length | 4550 mm | 5190 mm |
| Vehicle Width | 1770 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 3080 mm |
| Fuel Consumption Overall | 10 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 66 L | 90 L |
