Posted on 10/30/2026

You pull up to the pump in your Volkswagen or Audi and eye the price gap between regular and premium. The manual says premium is recommended, but does that mean you have to pay up every single time? Read the wording closely before you make a habit of hitting the cheaper button. Recommended fuel and required minimum octane aren't the same thing. For some engines, a lower grade is permitted, sometimes with reduced performance. Another VW or Audi may flat-out require premium fuel. The answer depends on your exact vehicle, not the badge on the grille. Premium Fuel Recommendations Need To Be Read In Full Start with the owner's manual and the information near the fuel filler. Look for both the preferred grade and any stated minimum. A recommendation for higher octane doesn't automatically mean every lower grade is fine, and a required minimum is never optional. Model year, engine, market, and software can all change the instructions, so two similar cars can h ... read more