There are 4 owner-reported fuel system complaints for the 2014 Acura MDXin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2014 Acura MDX. The contact stated while driving at an undisclosed speed, and while driving up an incline, the vehicle briefly hesitated and lost motive power before returning to normal functionality. The AWD and emission system warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V215000 (Fuel System, Gasoline), but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was unknown.
The fuel pump impeller was improperly moulded, resulting in low density impellers. Over time, the low-density impeller can deform and interfere with the fuel pump body, rendering the fuel pump inoperative. If the fuel pump module is inoperative, the engine may not start or can stall while driving, increasing the risk of a crash or injury. difficulty starting, engine hesitation while driving, or an illuminated check engine light
ON OR ABOUT 50,000 MILES WE NOTICED THE CAR WOULD SURGE WHEN DRIVING ON A FLAT LEVEL SURFACE ABOUT 50 MILES AN HOUR. THE TACHOMETER WILL SHOW A PULSING RPM MY WIFE FIRST COMPLAINT OFFICIALLY ABOUT IT WHEN THE CAR HEAD JUST OVER 80,000 MILES AND WE WERE TOLD IT WAS A SOFTWARE ISSUE BUT IT WAS OUT OF WARRANTY.. THIS DOES NOT SEEM LIKE IT SHOULD BE EXPIRED AS IT IS AN ISSUE WITH THE CAR AND SHOULD BE A RELATIVELY EASY FIX AND NOT HAVE TO PAY $400 TO HAVE IT DONE
THIS IS THE FOURTH INCIDENT OF UNINTENDED ENGINE REVVING WITH THIS VEHICLE. THIS FOURTH INCIDENT OCCURRED AT 7121 MILES. WAS IN "REVERSE," POSITIONING THE VEHICLE TO PULL INTO A PARKING SPACE. THE ENGINE SUDDENLY ACCELERATED WHILE I WAS IN "REVERSE" AND MY FOOT ON THE BRAKE PEDAL. HAD TO FIRMLY PRESS ON THE BRAKE PEDAL TO HOLD THE CAR FROM RUNNING INTO PEOPLE AND OTHER VEHICLES BEHIND OUR VEHICLE. SHIFTED INTO "NEUTRAL". THE ENGINE SOUNDED LIKE ONE THIRD OF FULL THROTTLE. I PRESSED ON THE GAS PEDAL AND THE ENGINE RETURNED TO IDLE. MY WIFE WAS WITH ME DURING THIS INCIDENT. SHE WAS WITH ME IN THE VEHICLE DURING THREE OF THESE FOUR SIMILAR INCIDENTS. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026