Audi has unveiled the latest evolution of its V6 TDI engine, which now incorporates the brand’s MHEV plus mild-hybrid technology. The 3.0-litre turbodiesel mill will be offered with the Q5 and A6 ranges.
The updated Audi V6 turbodiesel produces 220 kW and 580 N.m of torque, and adopts a three-part electrified system comprising a belt alternator starter, a powertrain generator and, for the first time in this engine family, an electrically powered compressor. Working together with a lithium iron phosphate battery, these components provide stronger performance, quicker throttle response and enhanced efficiency, the German marque says.
The 48 V electric compressor supports the turbocharger to reduces lag, the belt alternator starter handles engine restarts and keeps the battery replenished, and the powertrain generator enables short-distance pure-electric driving in city traffic. It also delivers up to 230 N.m of additional torque 18 kW of power when setting off and during overtaking. Energy recuperation of up to 25 kW is possible when decelerating.
Audi says the revised boost system can build up to 3.6 bar of pressure almost a full second faster than before, helping the vehicle cover an extra car length in the first 2.5 seconds of acceleration. The compressor wheel spins to 90 000 r/min in just 250 milliseconds; contributing to a more linear, electric-like response. The engine, codenamed EA897evo4, will be offered wth the Q5 and A6 quattro models.
Efficiency also benefits from compatibility with HVO 100 renewable diesel (EN 15940), which reduces CO₂ emissions by up to 95%. Claimed consumption figures range from 5.8-6.8 L/100 km for the Q5 and 5.3-6.1 L/100 km for the A6.
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