Maintain fuel quality to avoid misfires and CEL illumination on Audi A6 Quattro

Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Problem overview

Fuel quality must be maintained to avoid engine misfire problems; the misfires may cause the Check Engine Light to illuminate.

3 people reported this problem

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Audi A6 Quattro vehicles with this problem

3 model years affected

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Maintain fuel quality to avoid misfires and CEL illumination on Audi A6 Quattro

Problem overview

Audi A6 Quattro vehicles with this problem

Need a diagnosis? Trust our Audi experts.

Search for another problem

Ask our experts about your Audi.

Need a diagnosis? Trust our Audi experts.

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