2008 Audi A4 vs. 2007 Audi A8
To start off, 2008 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Audi A8. In addition, the cost of maintenance, including insurance, on 2007 Audi A8 would be higher. At 4,170 cc (8 cylinders), 2007 Audi A8 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A8 weights approximately 310 kg more than 2008 Audi A4.
Because 2007 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, 2007 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, 2007 Audi A8 (430 Nm @ 3500 RPM) has 109 more torque (in Nm) than 2008 Audi A4. (321 Nm @ 1750 RPM). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A4 | 2007 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2008 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 4170 cc |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 0 HP | 329 HP |
| Torque | 321 Nm | 430 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 95.5 mm | 93 mm |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 206 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.8 seconds | 6.3 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1470 kg | 1780 kg |
| Vehicle Length | 4590 mm | 5060 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2650 mm | 2950 mm |
| Fuel Consumption Overall | 5.8 L/100km | 8.8 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
