2005 Audi S4 vs. 2008 Infiniti M
To start off, 2008 Infiniti M is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,493 cc (8 cylinders), 2008 Infiniti M is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (339 HP @ 7000 RPM) has 14 more horse power than 2008 Infiniti M. (325 HP @ 6400 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2008 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2008 Infiniti M weights approximately 42 kg more than 2005 Audi S4.
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, 2008 Infiniti M (456 Nm @ 4000 RPM) has 46 more torque (in Nm) than 2005 Audi S4. (410 Nm @ 3500 RPM). This means 2008 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4. 2008 Infiniti M has automatic transmission and 2005 Audi S4 has manual transmission. 2005 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Infiniti M will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi S4 | 2008 Infiniti M | |
| Make | Audi | Infiniti |
| Model | S4 | M |
| Year Released | 2005 | 2008 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4493 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 325 HP |
| Engine RPM | 7000 RPM | 6400 RPM |
| Torque | 410 Nm | 456 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1795 kg | 1837 kg |
| Vehicle Length | 4580 mm | 4900 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1450 mm | 1520 mm |
| Wheelbase Size | 2660 mm | 2910 mm |
| Fuel Consumption Overall | 13.4 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 66 L | 76 L |
