2005 Audi A4 vs. 2009 Infiniti M
To start off, 2009 Infiniti M is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A4. In addition, the cost of maintenance, including insurance, on 2005 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 116 more horse power than 2005 Audi A4. (187 HP @ 5700 RPM) In normal driving conditions, 2009 Infiniti M should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti M weights approximately 192 kg more than 2005 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2009 Infiniti M (355 Nm @ 4800 RPM) has 115 more torque (in Nm) than 2005 Audi A4. (240 Nm @ 1950 RPM). This means 2009 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4. 2009 Infiniti M has automatic transmission and 2005 Audi A4 has manual transmission. 2005 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Infiniti M will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A4 | 2009 Infiniti M | |
| Make | Audi | Infiniti |
| Model | A4 | M |
| Year Released | 2005 | 2009 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 3498 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 187 HP | 303 HP |
| Engine RPM | 5700 RPM | 6800 RPM |
| Torque | 240 Nm | 355 Nm |
| Torque RPM | 1950 RPM | 4800 RPM |
| Engine Bore Size | 81 mm | 95.5 mm |
| Engine Stroke Size | 86.4 mm | 81.4 mm |
| Engine Compression Ratio | 9.0:1 | 10.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1530 kg | 1722 kg |
| Vehicle Length | 4550 mm | 4940 mm |
| Vehicle Width | 1780 mm | 1810 mm |
| Vehicle Height | 1430 mm | 1530 mm |
| Wheelbase Size | 2660 mm | 2910 mm |
| Fuel Consumption Overall | 9.4 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 66 L | 76 L |
