2007 Audi A8 vs. 2006 Audi S4
To start off, 2007 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Audi S4. In addition, the cost of maintenance, including insurance, on 2006 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (339 HP @ 7000 RPM) has 109 more horse power than 2007 Audi A8. (230 HP @ 4000 RPM) In normal driving conditions, 2006 Audi S4 should accelerate faster than 2007 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 50 kg more than 2007 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Audi S4. In wet, icy, snow, or gravel driving conditions, 2007 Audi A8 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 A8 (450 Nm @ 1400 RPM) has 40 more torque (in Nm) than 2006 Audi S4. (410 Nm @ 3500 RPM). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4. 2007 Audi A8 has automatic transmission and 2006 Audi S4 has manual transmission. 2006 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi A8 | 2006 Audi S4 | |
| Make | Audi | Audi |
| Model | A8 | S4 |
| Year Released | 2007 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 230 HP | 339 HP |
| Engine RPM | 4000 RPM | 7000 RPM |
| Torque | 450 Nm | 410 Nm |
| Torque RPM | 1400 RPM | 3500 RPM |
| Engine Compression Ratio | 17.0:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 7.9 seconds | 5.8 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1830 kg | 1880 kg |
| Vehicle Length | 5060 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1730 mm |
| Vehicle Height | 1450 mm | 1430 mm |
| Wheelbase Size | 3080 mm | 2650 mm |
| Fuel Consumption Overall | 8.4 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 90 L | 63 L |
