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Thread: Replace spark plugs?

  1. #1
    Registered Member

    2010 Mazda 5

    Join Date
    Mar 2011

    Replace spark plugs?

    The maintenance schedule says to replace the spark plugs at 75k miles. I am at 78; and being better gas mileage than ever. 23.9 in around town driving. I don't want to mess this up. Should I just leave it alone till there is an issue?
    2018 CX-9 Grand Touring
    2010 Mazda5 Sport Manual
    2005 Ford Freestyle Limited AWD
    2000 Ford Excursion Limited 4WD 7.3 PSD
    1991 Miata

  2. #2
    Registered Member

    2012 Mazda5 Sport AT

    Join Date
    May 2008
    I follow the recommended schedule. It's a super easy job. It'll take you under 30 minutes total.
    Completed mods: 15% tint all around | Class I trailer hitch | JKS Rear Spoiler | OEM bumper guard | OEM roof rack | Thule 872XT fairing | Hella Supertone Horns

  3. #3
    Booga Booga? phunky.buddha's Avatar

    2009 Mazda5 Sport

    Join Date
    Jul 2011
    DFW Metro, TX
    Preventative maintenance > reactive maintenance. Easy and cheap, take care of it.

  4. #4
    Registered Member GJ-Molestor's Avatar

    2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual

    Join Date
    Apr 2017
    Change them. Check air filter while you’re under there. There’s no way fuel economy won’t improve with new spark plugs.

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