Mazda vehicles equipped with certain SKYACTIV‑G engines experienced widespread valve stem seal failures that caused excessive oil consumption, blue exhaust smoke, misfires, and premature catalytic converter damage. A class action settlement resulted in Mazda extending the powertrain warranty to 8 years / 96,000 miles for affected owners.
| Year(s) | Make | Model | Should Purchase? | Notes | |
|---|---|---|---|---|---|
| 2014 2015 2016 2017 2018 2019 2020 2021 | Mazda | Mazda3 | Caution |
Component: Valve Stem Seals Issues: excessive oil consumption, blue smoke, misfires, catalytic converter damage Notes: settlement includes extended powertrain warranty (8 years / 96,000 miles) |
|
| 2014 2015 2016 2017 2018 2019 2020 2021 | Mazda | Mazda6 | Caution |
Component: Valve Stem Seals Issues: oil burning, blue smoke on startup, misfires, premature catalytic converter wear Notes: included in settlement; extended warranty applies |
|
| 2014 2015 2016 2017 2018 2019 2020 2021 | Mazda | CX‑5 | Caution |
Component: Valve Stem Seals Issues: oil consumption, smoke, misfires, converter contamination Notes: one of the most commonly reported models in the settlement |
|
| 2016 2017 2018 2019 2020 2021 | Mazda | CX‑9 | Caution |
Component: Valve Stem Seals Issues: oil burning, smoke, misfires, catalytic converter damage Notes: settlement coverage applies; verify VIN eligibility |
|
| 2016 2017 2018 2019 2020 2021 | Mazda | CX‑3 | Caution |
Component: Valve Stem Seals Issues: oil consumption, smoke, misfires Notes: included in valve stem seal settlement; extended warranty applies |
Mazda agreed to extend the powertrain warranty to 8 years / 96,000 miles for affected vehicles with defective valve stem seals. The settlement also provides reimbursement for prior repairs, diagnostic fees, and catalytic converter replacements caused by oil contamination.