2005 Audi A8 vs. 2009 Infiniti FX
To start off, 2009 Infiniti FX is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (444 HP @ 6200 RPM) has 59 more horse power than 2009 Infiniti FX. (385 HP @ 6500 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2009 Infiniti FX. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti FX weights approximately 125 kg more than 2005 Audi A8.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2005 Audi A8 (580 Nm @ 4000 RPM) has 80 more torque (in Nm) than 2009 Infiniti FX. (500 Nm @ 4400 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Infiniti FX.
Compare all specifications:
| 2005 Audi A8 | 2009 Infiniti FX | |
| Make | Audi | Infiniti |
| Model | A8 | FX |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Crossover |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 5026 cc |
| Engine Type | W | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 385 HP |
| Engine RPM | 6200 RPM | 6500 RPM |
| Torque | 580 Nm | 500 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Engine Bore Size | 84 mm | 95.5 mm |
| Engine Stroke Size | 90.2 mm | 87.7 mm |
| Engine Compression Ratio | 11.0:1 | 10.9:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.4 seconds | 6.1 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1995 kg | 2120 kg |
| Vehicle Length | 5070 mm | 4870 mm |
| Vehicle Width | 1900 mm | 1930 mm |
| Vehicle Height | 1450 mm | 1690 mm |
| Wheelbase Size | 3080 mm | 2890 mm |
| Fuel Consumption Overall | 13.8 L/100km | 13 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
