2005 Audi A4 vs. 2008 Audi S8
To start off, 2008 Audi S8 is newer by 3 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 5,204 cc (10 cylinders), 2008 Audi S8 is equipped with a bigger engine. In terms of performance, 2008 Audi S8 (444 HP @ 7000 RPM) has 224 more horse power than 2005 Audi A4. (220 HP @ 6200 RPM) In normal driving conditions, 2008 Audi S8 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S8 weights approximately 210 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, 2008 Audi S8 (540 Nm) has 240 more torque (in Nm) than 2005 Audi A4. (300 Nm). This means 2008 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4. 2008 Audi S8 has automatic transmission and 2005 Audi A4 has manual transmission. 2005 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Audi S8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A4 | 2008 Audi S8 | |
| Make | Audi | Audi |
| Model | A4 | S8 |
| Year Released | 2005 | 2008 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 5204 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 220 HP | 444 HP |
| Engine RPM | 6200 RPM | 7000 RPM |
| Torque | 300 Nm | 540 Nm |
| Engine Bore Size | 83 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 10.1:1 | 12.5:1 |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1730 kg | 1940 kg |
| Vehicle Width | 1770 mm | 1900 mm |
| Wheelbase Size | 2770 mm | 2950 mm |
| Fuel Consumption Overall | 11.8 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 66 L | 90 L |
