2025 Acura MDX engine problems

47 owner complaints filed with NHTSA name the engine on the 2025 Acura MDX — 64% of all complaints for this model year.

Engine complaints

64%

share of all complaints

—

median reported incident mileage

0 / 0

crash / fire reports

What owners report

“I am writing to formally report a serious and recurring safety defect with my 2025 Acura MDX A-Spec (VIN [XXX]) involving the Auto Idle Stop system. The engine repeatedly fails to restart after the Auto Idle Stop feature shuts it off. When my wife releases the brake pedal (for example, at a traffic…”
filed Jul 31, 2026
“I am submitting this complaint regarding my **2025 Acura MDX**, which I currently lease. The vehicle has an ongoing starting system malfunction that has not been resolved despite multiple service visits. I believe this issue presents a significant safety risk. The primary issue involves the **Auto…”
filed Jul 31, 2026

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

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction)…
BTI&05122026901 · Other · issued May 13, 2026
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction)…
BTI&04292026901 · Other · issued Apr 29, 2026
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 MDXs with a client complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or…
BTI&07312025903 · Other · issued Aug 1, 2025