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MINI Cooper Gas

How necessary is it to use premium grade gas in a MINI Cooper base model (not an 'S' or larger model)? What are the potential problems from using regular gas? Thanks.


  • edited February 2011
    Pretty sure all the Mini's specify premium fuel. Look in your manual or it probably says premium only on or near the gas cap. Potential problem of not using premium would be detonation that could put a hole in a piston or otherwise destroy your engine. The difference in gas price certainly isn't worth risking your engine. It's only a couple bucks difference per tank, which is nothing compared to what it costs to fill a tank these days.
  • edited February 2011
    The difference as others here will no doubt tell you is whether premium gasoline is "recommended" or "required" by your Cooper's manual.

    If premium gasoline is required, it means just what it says.

    An attempt to save money at the gas pump will cost you much more in the long run.

    On the other hand, if premium is "recommended," it's up to you to see whether the performance is affected and make your own determination.
  • edited February 2011
    Here we go again. I guess that "Search" button above is for other people.
  • edited February 2011
    You might also remember that using regular fuel in a car designed to use premium may result in higher fuel cost since you will get less mileage in a car designed for premium if you use regular.
  • edited February 2011
    How can you justify saving $2 per fill up compared to using 91+ octane?
  • edited February 2011
    The car can run on regular. However it is not optimal for the engine nor performance. Will you see the negative effects during your ownership? Who knows..
  • edited March 2011
    I just bought a 2007 Mini Cooper base model. The following is direct from the manual regarding fuel. What appears to be a requirement at first, really turns out to be a recommendation. Someday when the "honeymoon's" over, I may experiment with regular to see if I notice a difference. The car's pretty miserly on gas so, for now, I've been using premium and it runs great.
    "Required fuel - Super Premium gasoline/AKI 91.
    This gasoline is highly recommended. However, you may also use gasoline with less AKI. The minimum AKI Rating is 87. If you use gasoline with this minimum AKI Rating, the engine may produce knocking souunds when starting at high outside temperatures. This has no effect on the engine life. Do not use any gasoline below the specified minimum fuel grade. Otherwise the engine could be damaged."
  • edited March 2011
    The fuel tank is barely more than 10 gallons, you aren't saving much by using 87 octane, $2 at MOST
  • edited March 2011
    Just to amplfy, you will save $64 for every 10,000 miles you drive. I think the savings are insignificant. No one knows your Mini beter than BMW. If they require premium, then use it.
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