2007 Audi A4 vs. 2005 Audi S8
To start off, 2007 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi S8. In addition, the cost of maintenance, including insurance, on 2005 Audi S8 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S8 is equipped with a bigger engine. In terms of performance, 2005 Audi S8 (247 HP @ 4000 RPM) has 50 more horse power than 2007 Audi A4. (197 HP @ 5100 RPM) In normal driving conditions, 2005 Audi S8 should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S8 weights approximately 140 kg more than 2007 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2007 Audi A4. In wet, icy, snow, or gravel driving conditions, 2005 Audi S8 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 S8 (450 Nm @ 3400 RPM) has 170 more torque (in Nm) than 2007 Audi A4. (280 Nm @ 1800 RPM). This means 2005 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 2005 Audi S8 | |
| Make | Audi | Audi |
| Model | A4 | S8 |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 4172 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 197 HP | 247 HP |
| Engine RPM | 5100 RPM | 4000 RPM |
| Torque | 280 Nm | 450 Nm |
| Torque RPM | 1800 RPM | 3400 RPM |
| Drive Type | Front | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1770 kg |
| Wheelbase Size | 2660 mm | 2290 mm |
| Fuel Tank Capacity | 70 L | 90 L |
