Audi has used this weekâs Vienna Motor Symposium to reveal the new 2.0-litre TFSI engine that will power its next Audi A4. Audi calls it a philosophy or rightsizing, not downsizing, and the next-generation (B9) sedan will be unveiled at Septemberâs Frankfurt motor show.
Lighter weight (140kg), featuring turbocharging, direct-injection and Audi ValveLift; the latest four-cylinder unit will develop 140kW and 320Nm of torque. Slightly detuned over the current 2.0-litre TFSI developing 165kW and 350Nm, but itâs clear the new engine focusses on efficiency (a claimed/combined figure of 6.0l/100km) but peak torque is now available between 1450-4500rpm for supreme tractability.
Audi says the improved midrange comes courtesy of a new combustion method which allows higher compression ratios and higher energy levels in the combustion cycle without the fear of engine knock. A new coolant flow system shortens engine warm-up time, the exhaust manifold is now integrated into the cylinder head and a reduction of friction with the help of low-friction engine oil further enhances efficiency.