Mazda CX-9 Transmission Problems by Year

Transmission complaints owners filed with the U.S. government (NHTSA) for each model year, per 100,000 cars sold. A complaint counts when it's filed under the transmission, or under the power train and the owner describes the transmission (shifting, slipping, gears, CVT). It's an owner's report, not a confirmed defect, and older years have had longer to collect complaints.

200713.9 per 100K sold 20081765.1 per 100K sold 200929.5 per 100K sold 2010724.2 per 100K sold 20111234.9 per 100K sold 20121145 per 100K sold 2013312.2 per 100K sold 20170no sales data 201813.5 per 100K sold 20190no sales data 202013.6 per 100K sold 202125.8 per 100K sold 20220no sales data

What owners describe

Hard or jerky shifting18%

Shudder16%

Transmission replaced9%

Delay or hesitation5%

Lost power while driving5%

Slipping5%

Share of this model's transmission complaints that mention each symptom. One complaint can mention several.

In owners' words

After changing gears, 4th to 6th, the car start making hard shifting, ratling. This sound, goes and came in time to time.
2008 Mazda CX-9 owner · NHTSA complaint

Knock or hard shift in park as well as in reverse keeps burning oil had everything flushed replaced all fluids valve cover gaskets spark plugs etc
2008 Mazda CX-9 owner · NHTSA complaint

Quick answers

Which Mazda CX-9 years have transmission problems?

By transmission complaints filed with NHTSA per car sold, the worst Mazda CX-9 years are 2008, 2012, 2011.

What are common Mazda CX-9 transmission problems?

Owners most often describe hard or jerky shifting, shudder, transmission replaced.

Which Mazda CX-9 years have the fewest transmission complaints?

Since 2010, the Mazda CX-9 years with the fewest transmission complaints per car sold are 2018, 2020, 2021.

See every problem, not just the transmission: Mazda CX-9 reliability by year. How we count

Mazda CX-9 transmission problems by year.