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 (450 HP @ 7000 RPM) has 233 more horse power than 2005 Audi A4. (217 HP @ 6300 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. 2005 Audi A4 weights approximately 345 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 240 more torque (in Nm) than 2005 Audi A4. (300 Nm @ 3200 RPM). 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 | Sedan | 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 | 217 HP | 450 HP |
| Engine RPM | 6300 RPM | 7000 RPM |
| Torque | 300 Nm | 540 Nm |
| Torque RPM | 3200 RPM | 3500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1505 kg | 1160 kg |
| Vehicle Length | 4550 mm | 5070 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2950 mm |
| Fuel Consumption | 9.1 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 10.5 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 66 L | 90 L |
