2008 Audi S8 vs. 2007 Audi A4
To start off, 2008 Audi S8 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 5,204 cc (10 cylinders), 2008 Audi S8 is equipped with a bigger engine. In terms of performance, 2008 Audi S8 (450 HP @ 7000 RPM) has 195 more horse power than 2007 Audi A4. (255 HP @ 6500 RPM). In normal driving conditions, 2008 Audi S8 should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 720 kg more than 2008 Audi S8.
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 S8 (540 Nm @ 3500 RPM) has 209 more torque (in Nm) than 2007 Audi A4. (331 Nm @ 3250 RPM). This means 2008 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2008 Audi S8 | 2007 Audi A4 | |
| Make | Audi | Audi |
| Model | S8 | A4 |
| Year Released | 2008 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 3123 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 255 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 540 Nm | 331 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1160 kg | 1880 kg |
| Vehicle Length | 5070 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2950 mm | 2660 mm |
| Fuel Consumption Highway | 12.4 L/100km | 8.7 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 90 L | 63 L |
