pretty bad
Typical Repair Cost:
No data
Average Mileage:
12,000 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. not sure (1 reports)
  2. tsb 01-012/21 (1 reports)
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2021 Mazda CX-5 engine problems

engine problem

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2021 Mazda CX-5 Owner Comments

problem #2

Mar 162022

CX-5 Signature 2.5L Turbo 4 cyl

  • Automatic transmission
  • 12,750 miles


So I bought this Brand New Mazda CX5 to lower my fuel consumption and have fewer oil changes, since they recommend every 7500 miles for my type of driving. Gas mileage is good, but the oil changes are even more frequently needing attention than my 137,000 mi Jeep Wrangler!!

My low oil light came on after my first oil change, which prompted me to visit my local auto shop whom I trust. They pulled a Technical Service Bulletin, Bulletin number 01-012/21, they printed and showed to me. So there is no known fix yet except to check levels regularly and top off the oil at Mazda's expense.

Two things that concern me are the burnt oil is flowing through the exhaust system which will probably shorten the life of the catalytic converter and O2 sensors not to mention the buildup on the valves in the engine. And second, not only does this cost me in my time but now they recommend shorter oil change intervals which cost real money that I thought I'd be saving.

I love the car, but, come on Mazda! What changed from the 2019 model? Did you get cheaper parts? This can't be a huge mystery on what caused this problem. My main concern is that I put on 20,000 miles per year and I worry the damage will be done and I will be out of warranty before they can figure out the solution.

I spoke with Mazda dealership and they recommend that I drive again until low oil warning once or twice more to establish a pattern and start the process for future repair. Now the annoying part is that I will have to spend my time to get the oil topped off regularly hoping this fix comes soon.

Hyundai owners have filed a lawsuit and I think Mazda owners affected should start to consider our options.

- Brian S., Ashburn, US

problem #1

Feb 232022

CX-5 Carbon Blac 2.4L Turbo

  • Automatic transmission
  • 11,200 miles

2nd time this is has happened where the oil light comes on. The first time at 3k miles and the dealer told me that the manufacturer does not overfill. 2nd time no leaks but is a known problem - but fix is being worked on. I can smell oil burning in the morning and the exhaust pipe has a sheen. But I see another post say there is an STB so I am going to look into it. If the engine is already eating oil it will not get any better I wonder if Mazda is waiting for the warranty to run out?

- Michael L., Tampa, US

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