Maintain Fuel Quality to Avoid Misfires and CEL Illumination on Audi A6

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

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Average mileage: 91,000 (80,000–102,000)
Engines affected: 2.8L V6, 3.0L V6
4 model years affected: 1999, 2002, 2003, 2004
6 people reported this problem
1 person shared problem details
1999 Audi A6- 2.8L V6102,000
My daughter started to use it and put 87 gasoline froom ^^. Some days after the engine light came on andd you could sense there was a cylinder miss firing. changed to ptremium shell and problem was gone
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