2008 Audi S4 vs. 2005 Infiniti M
To start off, 2008 Audi S4 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Infiniti M. In addition, the cost of maintenance, including insurance, on 2005 Infiniti M would be higher. At 4,161 cc (8 cylinders), 2008 Audi S4 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (340 HP @ 7000 RPM) has 63 more horse power than 2005 Infiniti M. (277 HP @ 6200 RPM). In normal driving conditions, 2008 Audi S4 should accelerate faster than 2005 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2005 Infiniti M weights approximately 30 kg more than 2008 Audi S4.
Because 2008 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Infiniti M. In wet, icy, snow, or gravel driving conditions, 2008 Audi S4 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, 2008 Audi S4 (410 Nm @ 3500 RPM) has 44 more torque (in Nm) than 2005 Infiniti M. (366 Nm @ 4800 RPM). This means 2008 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Infiniti M.
Compare all specifications:
| 2008 Audi S4 | 2005 Infiniti M | |
| Make | Audi | Infiniti |
| Model | S4 | M |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 3498 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 277 HP |
| Engine RPM | 7000 RPM | 6200 RPM |
| Torque | 410 Nm | 366 Nm |
| Torque RPM | 3500 RPM | 4800 RPM |
| Engine Bore Size | 84.5 mm | 96 mm |
| Engine Stroke Size | 92.8 mm | 81 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1705 kg | 1735 kg |
| Vehicle Length | 4590 mm | 4900 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1520 mm |
| Wheelbase Size | 2650 mm | 2880 mm |
| Fuel Tank Capacity | 63 L | 75 L |
