2007 Audi A4 vs. 2009 Infiniti M
To start off, 2009 Infiniti M is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 3,498 cc (6 cylinders), 2009 Infiniti M is equipped with a bigger engine. In terms of performance, 2009 Infiniti M (303 HP @ 6800 RPM) has 106 more horse power than 2007 Audi A4. (197 HP @ 5100 RPM) In normal driving conditions, 2009 Infiniti M should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti M weights approximately 92 kg more than 2007 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Infiniti M is four wheel drive (4WD), it will have significant more traction and grip than 2007 Audi A4. In wet, icy, snow, or gravel driving conditions, 2009 Infiniti M 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, 2009 Infiniti M (355 Nm @ 4800 RPM) has 75 more torque (in Nm) than 2007 Audi A4. (280 Nm @ 1800 RPM). This means 2009 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 2009 Infiniti M | |
| Make | Audi | Infiniti |
| Model | A4 | M |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 3498 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 197 HP | 303 HP |
| Engine RPM | 5100 RPM | 6800 RPM |
| Torque | 280 Nm | 355 Nm |
| Torque RPM | 1800 RPM | 4800 RPM |
| Engine Bore Size | 82.5 mm | 95.5 mm |
| Engine Stroke Size | 92.8 mm | 81.4 mm |
| Engine Compression Ratio | 10.5:1 | 10.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1722 kg |
| Vehicle Length | 4580 mm | 4940 mm |
| Vehicle Width | 1400 mm | 1810 mm |
| Vehicle Height | 1780 mm | 1530 mm |
| Wheelbase Size | 2660 mm | 2910 mm |
| Fuel Consumption Overall | 8.3 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 70 L | 76 L |
