The new 2.0 TFSI four-cylinder engine produces a healthy 140kW of power and chunky 320Nm of torque across a broad range - from 1450-4400 rpm. And through an "innovative combustion method" the engine is claimed to use "less than 5.0 litres per 100km", according to the brand.
The company claims its new combustion system, among other things, sees a shorter intake time, higher boot pressure on the inlet side, a faster-closing intake valve and "a high, efficiency-boosting compression ratio". The engine is said to weigh about 140kg, and other technologies include a shortened warm-up time thanks to a controlled coolant flow.
For comparison - and based on Australian figures - the current A4 2.0 TFSI quattro has more power and torque - 165kW and 350Nm - but uses quite a bit more fuel, with the manual claiming 6.6L/100km and the S tronic dual-clutch version using a claimed 6.7L/100km. The current-generation Mercedes-Benz C-Class also uses a 2.0-litre turbo petrol engine, and the best claimed consumption for that car is 6.0L/100km.
Audi's technical development chief, Professor Ulrich Hackenberg, described the new engine as "a crucial step further with rightsizing".
“Rightsizing thus involves the optimal interplay of vehicle class, displacement, output, torque and efficiency characteristics under everyday conditions. Our new 2.0 TFSI is a prime example of Vorsprung durch Technik.”
The company has confirmed it will be "using the engine for the first time in the next generation of the A4", which is slated to be available in Europe "by the end of 2015".