2021 Mazda CX-5 engine problems

77 owner complaints filed with NHTSA name the engine on the 2021 Mazda CX-5 — 55% of all complaints for this model year.

Engine complaints

55%

share of all complaints

—

median reported incident mileage

1 / 0

crash / fire reports

What owners report

“The vehicle developed an engine oil leak from the timing cover due to what appears to be premature seal failure. Engine oil was leaking externally and could drip onto hot engine components, creating a potential fire hazard while the vehicle is in operation. The leak also increases the risk of low…”
filed Jul 27, 2026
“2021 Mazda CX‑5 (VIN: [XXX] ). First low‑oil warning at 17,800 miles. ([XXX]) Mazda dealership in La Crosse, WI performed an oil change and fully refilled the oil. Second low‑oil warning at 18,700 miles — only 900 miles later. ([XXX]) This indicates rapid, abnormal oil loss consistent with the…”
filed May 30, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s)…
SA-041-26 · Service Bulletin/Repair Instructions · issued Jun 19, 2026
Valve Stem Seals Class Action Settlement Program for Excessive Oil Consumption and Oil Consumption Powertrain Warranty Extension Special Service Program SSPD5. Updated April 28, 2026 – Related oil part number for…
SSPD5 Parts Warr b · Warranty Program/Extension · issued Apr 29, 2026