What's Wrong with the 1st Generation (2007–2015) CX-9?

CX-9 owners have made 210 complaints about the 2007–2015 model years. Using our PainRank™ system we've ranked it 30th out of 36 Mazda generations in overall reliability, with real brakes and engine concerns.

Compare With Other CX-9 Generations

Common 2007-2015 Mazda CX-9 Problems

Some of the worst issues 1st generation CX-9 owners have to deal with.

  1. Valve Stem Corrosion and TPMS Warnings

    Mazda owners are experiencing warning lights, valve stem corrosions, and sudden tire blowouts that can all be traced to issues with the tire pressure monitoring system (TPMS). Law firms are currently gathering information about potential cl…

    Continue reading article "Valve Stem Corrosion and TPMS Warnings" Corroded Mazda valve stem

  2. CX-9 Brake Booster Failure

    CX-9 owners are worried about increased stopping distances with brake pedals that feel spongy (and unsafe) or really hard to push (and unsafe). I bet you're sensing a theme here. NHTSA was looking at the issue but closed their investigation…

    Continue reading article "CX-9 Brake Booster Failure" CX-9 brake pedal replaced with a sponge

What Owners Complain About

Sometimes it helps just to tally up the complaints and see where the biggest stacks are. Use this information to learn about troublespots or to run for the hills.

Worst Issues

What Breaks the Most

Years to Avoid

1st Generation (2007–2015) CX-9 Key Numbers

  1. 9 model years

    Grouping all models by their year can reveal some baddies.

  2. 210 complaints

    Running tally of owner grievances filed to CarComplaints.com.

  3. 30th in reliability

    Overall reliability rank out of 36 eligible generations.