2009 Audi Q7 vs. 2005 Audi S4
To start off, 2009 Audi Q7 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 103 more horse power than 2009 Audi Q7. (237 HP @ 4000 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2009 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 635 kg more than 2005 Audi S4.
Let's talk about torque, 2009 Audi Q7 (550 Nm) has 140 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2009 Audi Q7 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | Q7 | S4 |
| Year Released | 2009 | 2005 |
| Body Type | SUV | Sedan |
| 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 | 237 HP | 340 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 550 Nm | 410 Nm |
| Engine Bore Size | 83.1 mm | 85.1 mm |
| Engine Stroke Size | 91.4 mm | 93 mm |
| Engine Compression Ratio | 17.0:1 | 11.0:1 |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2370 kg | 1735 kg |
| Vehicle Length | 5090 mm | 4550 mm |
| Vehicle Width | 1990 mm | 1770 mm |
| Vehicle Height | 1740 mm | 1430 mm |
| Wheelbase Size | 3010 mm | 2660 mm |
| Fuel Consumption Overall | 9.8 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 100 L | 63 L |
