2007 Audi S4 vs. 2008 Audi A8
To start off, 2008 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Audi S4. In addition, the cost of maintenance, including insurance, on 2007 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (340 HP @ 7000 RPM) has 123 more horse power than 2008 Audi A8. (217 HP @ 6300 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 395 kg more than 2007 Audi S4.
Because 2007 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A8. In wet, icy, snow, or gravel driving conditions, 2007 Audi S4 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 S4 (411 Nm @ 3500 RPM) has 111 more torque (in Nm) than 2008 Audi A8. (300 Nm @ 8200 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A8.
Compare all specifications:
| 2007 Audi S4 | 2008 Audi A8 | |
| Make | Audi | Audi |
| Model | S4 | A8 |
| Year Released | 2007 | 2008 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2976 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 340 HP | 217 HP |
| Engine RPM | 7000 RPM | 6300 RPM |
| Torque | 411 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 8200 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 242 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 8.3 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1275 kg | 1670 kg |
| Vehicle Length | 4580 mm | 5190 mm |
| Vehicle Width | 1790 mm | 1900 mm |
| Vehicle Height | 1450 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 3080 mm |
| Fuel Consumption Overall | 13.8 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 63 L | 90 L |
