2005 Audi A4 vs. 2013 Audi A8
To start off, 2013 Audi A8 is newer by 8 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 3,000 cc (6 cylinders), 2013 Audi A8 is equipped with a bigger engine. In terms of performance, 2013 Audi A8 (328 HP) has 108 more horse power than 2005 Audi A4. (220 HP) In normal driving conditions, 2013 Audi A8 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2013 Audi A8 weights approximately 185 kg more than 2005 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2013 Audi A8 (441 Nm) has 141 more torque (in Nm) than 2005 Audi A4. (300 Nm). This means 2013 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 | 2013 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2005 | 2013 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 3000 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | W |
| Valves per Cylinder | 5 valves | 6 valves |
| Horse Power | 220 HP | 328 HP |
| Torque | 300 Nm | 441 Nm |
| Engine Bore Size | 83 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 89.5 mm |
| Engine Compression Ratio | 10.1:1 | 10.3:1 |
| Top Speed | 238 km/hour | 250 km/hour |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | CVT |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1645 kg | 1830 kg |
| Vehicle Length | 4550 mm | 5137 mm |
| Vehicle Width | 1770 mm | 2111 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 2992 mm |
| Fuel Consumption Highway | 9.6 L/100km | 7.1 L/100km |
| Fuel Consumption City | 13.2 L/100km | 11.7 L/100km |
