2008 Infiniti M vs. 2011 Audi S5
To start off, 2011 Audi S5 is newer by 3 year(s). Which means there will be less support and parts availability for 2008 Infiniti M. In addition, the cost of maintenance, including insurance, on 2008 Infiniti M would be higher. At 4,493 cc (8 cylinders), 2008 Infiniti M is equipped with a bigger engine. In terms of performance, 2011 Audi S5 (354 HP @ 7000 RPM) has 29 more horse power than 2008 Infiniti M. (325 HP @ 6400 RPM) In normal driving conditions, 2011 Audi S5 should accelerate faster than 2008 Infiniti M. With that said, vehicle weight also plays an important factor in acceleration. 2008 Infiniti M weights approximately 87 kg more than 2011 Audi S5.
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 16 more torque (in Nm) than 2011 Audi S5. (440 Nm @ 3500 RPM). This means 2008 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2011 Audi S5. 2008 Infiniti M has automatic transmission and 2011 Audi S5 has manual transmission. 2011 Audi S5 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:
| 2008 Infiniti M | 2011 Audi S5 | |
| Make | Infiniti | Audi |
| Model | M | S5 |
| Year Released | 2008 | 2011 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4493 cc | 4200 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 325 HP | 354 HP |
| Engine RPM | 6400 RPM | 7000 RPM |
| Torque | 456 Nm | 440 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1837 kg | 1750 kg |
| Vehicle Length | 4900 mm | 4625 mm |
| Vehicle Width | 1800 mm | 1854 mm |
| Vehicle Height | 1520 mm | 1372 mm |
| Wheelbase Size | 2910 mm | 2751 mm |
| Fuel Consumption Highway | 11.2 L/100km | 10.7 L/100km |
| Fuel Consumption City | 14.7 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 76 L | 63 L |
