Bob Petruska

Completely new: 2.0 TFSI

The gasoline engines also combine strong performance with astonishing efficiency. The 2.0 TFSI, which mobilizes 1,984 cc of displacement, appears as an entirely new development with innovative solutions in many technical areas. It is the successor to the engine that was selected "Engine of the Year" five years in a row.

The new four-cylinder engine exhibits a torque curve like a TDI - it attains its maximum torque of 350 Nm (258.15 lb-ft) at a low 1,500 rpm and maintains it at a constant value up to 4,500 rpm. It outputs its full 165 kW (225 hp) of power at a low 4,500 rpm. With a manual transmission, the 2.0 TFSI accelerates the Audi Q5 from zero to 100 km/h (62.14 mph) in 7.6 seconds (tiptronic: 7.1 seconds) and to a top speed of 222 km/h (137.94 mph).

Its combined fuel consumption is only 7.6 liters of fuel per 100 km (30.95 US mpg) (with tiptronic: 7.9 liters [29.77 US mpg]) - equivalent to CO2 emissions of 176 (184) grams per km (283.24 [296.12] g/mile).

One innovation in the 2.0 TFSI is the addition of indirect fuel injection. This supplements FSI direct gasoline injection under part-load conditions, improving fuel economy and reducing particulate emissions. FSI injection, which operates at up to 200 bar pressure, is utilized at engine start and higher loads. In terms of filling the combustion chambers, engineers have implemented new degrees of freedom: both camshafts can be adjusted as necessary; on the exhaust side, the Audi valvelift system varies valve stroke over two stages as well.

In the innovative thermal management system, two rotary vanes incorporated in one module regulate the flow of coolant. They ensure that the engine oil heats quickly to its operating temperature after an engine start, and they regulate coolant temperature between 85 and 107 degrees Celsius depending on the driving situation. This achieves an optimal relationship between minimal friction and high thermodynamic efficiency under all load and engine speed conditions.

The exhaust manifold of the four-cylinder engine is integrated in the cylinder head where coolant circulates around it. This solution reduces the temperature of the exhaust gas, which improves fuel efficiency during a sporty mode of driving, because it avoids full-throttle enrichment. A newly developed turbocharger also makes its appearance here. Its key improvement is an electric wastegate adjuster, which regulates charge pressure extremely fast and precisely - making engine response even more spontaneous.

Internal friction has been significantly reduced as well - by a new type of coating on the piston skirts and a low-friction bearing on the two balancer shafts for very smooth engine running. The regulated oil pump consumes very little energy.

Mark P

Thanks Bob!

Scott Evil

Thanks for the information. I had no idea the 2014 would come with a new motor. A nice suprise. I test drove a 2013 and while the increase in power is not readily noticeable, the 2014 motor starts in the blink of an eye and I think it is a bit smoother. Quite subjective, but nice nonetheless.