Why does my Audi A4 have poor fuel economy following the emissions upgrade?

Has anybody else had a reduction in their fuel economy following the recent emissions upgrade? The range on my Audi A4 has gone from 620 to 570 miles per tank. Audi say it's nothing to do with the upgrade, yet nothing else has changed.

Asked on 22 March 2017 by Tim Evans

Answered by Honest John

Yes. This isn't supposed to happen but it does because reducing NOx creates more soot and the DPF needs more diesel fuel to burn off the extra soot.

Tags: volkswagen emissions scandal fuel economy dpf diesel engines poor fuel consumption diesel cars nox emissions emissions fix

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Related models

Audi A4 (2008 - 2015)

High quality interior with plenty of space. Excellent steering and handling. Available with quattro four-wheel drive. Frugal 2.0 TDI. Improved for 2012 with more efficient engines.