2005 Audi RS4 vs. 2007 Infiniti FX
To start off, 2007 Infiniti FX is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi RS4. In addition, the cost of maintenance, including insurance, on 2005 Audi RS4 would be higher. At 4,494 cc (8 cylinders), 2007 Infiniti FX is equipped with a bigger engine. In terms of performance, 2005 Audi RS4 (376 HP @ 6300 RPM) has 56 more horse power than 2007 Infiniti FX. (320 HP @ 6000 RPM). In normal driving conditions, 2005 Audi RS4 should accelerate faster than 2007 Infiniti FX.
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, 2007 Infiniti FX (454 Nm @ 4000 RPM) has 5 more torque (in Nm) than 2005 Audi RS4. (449 Nm @ 2500 RPM). This means 2007 Infiniti FX will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi RS4. 2007 Infiniti FX has automatic transmission and 2005 Audi RS4 has manual transmission. 2005 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Infiniti FX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi RS4 | 2007 Infiniti FX | |
| Make | Audi | Infiniti |
| Model | RS4 | FX |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Crossover |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 376 HP | 320 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 449 Nm | 454 Nm |
| Torque RPM | 2500 RPM | 4000 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4600 mm | 4810 mm |
| Vehicle Width | 1820 mm | 1930 mm |
| Vehicle Height | 1420 mm | 1680 mm |
| Wheelbase Size | 2610 mm | 2860 mm |
| Fuel Consumption | 10.1 L/100km | 13.1 L/100km |
| Fuel Consumption City | 19.7 L/100km | 16.8 L/100km |
| Fuel Consumption Overall | 13.7 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 55 L | 90 L |
