2008 Audi A8 vs. 2008 Audi A4
To start off, both 2008 Audi A8 and 2008 Audi A4 were released in the same year (2008). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,172 cc (8 cylinders), 2008 Audi A8 is equipped with a bigger engine. In terms of performance, 2008 Audi A8 (330 HP @ 6500 RPM) has 78 more horse power than 2008 Audi A4. (252 HP @ 6500 RPM). In normal driving conditions, 2008 Audi A8 should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 420 kg more than 2008 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A4. In wet, icy, snow, or gravel driving conditions, 2008 Audi A8 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, 2008 Audi A8 (431 Nm @ 3500 RPM) has 101 more torque (in Nm) than 2008 Audi A4. (330 Nm @ 3250 RPM). This means 2008 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A8 | 2008 Audi A4 | |
| Make | Audi | Audi |
| Model | A8 | A4 |
| Year Released | 2008 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 3123 cc |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 330 HP | 252 HP |
| Engine RPM | 6500 RPM | 6500 RPM |
| Torque | 431 Nm | 330 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.4 seconds | 7.1 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1910 kg | 1490 kg |
| Vehicle Length | 5190 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 3080 mm | 2650 mm |
| Fuel Consumption Overall | 11.9 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
