2003 Infiniti M vs. 2007 Audi A4
To start off, 2007 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Infiniti M. In addition, the cost of maintenance, including insurance, on 2003 Infiniti M would be higher. At 4,494 cc (8 cylinders), 2003 Infiniti M is equipped with a bigger engine. In terms of performance, 2003 Infiniti M (340 HP @ 6400 RPM) has 110 more horse power than 2007 Audi A4. (230 HP @ 4000 RPM). In normal driving conditions, 2003 Infiniti M should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 43 kg more than 2003 Infiniti M.
Because 2007 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Infiniti M. In wet, icy, snow, or gravel driving conditions, 2007 Audi A4 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, both vehicles can yield 451 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2003 Infiniti M | 2007 Audi A4 | |
| Make | Infiniti | Audi |
| Model | M | A4 |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4494 cc | 2967 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 230 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 451 Nm | 451 Nm |
| Torque RPM | 4000 RPM | 1400 RPM |
| Engine Bore Size | 93 mm | 83 mm |
| Engine Stroke Size | 82.7 mm | 91.4 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1747 kg | 1790 kg |
| Vehicle Length | 5020 mm | 4580 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2810 mm | 2660 mm |
| Fuel Tank Capacity | 79 L | 63 L |
