There are 4 owner-reported fuel system complaints for the 2015 Mazda CX-5in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Occasionally have sudden unintended acceleration. Went to dealer, no codes shown. Replaced battery and did throttle service. Happens 1 or 2 times a month generally within first 5 minutes of trip when attempting to stop. While braking , rpm's go to 3k and brakes barely hold car stopped, so I throw it in neutral to stop...rpms eventually go down to normal. It's obviously a very dangerous situation. Im going to make another appt with dealer again but not optimistic because no codes show and they will keep the car until it happens but that could take forever. Went to other mechanics for fresh eyes and opinions. Some feel that it could be a software issue controlling the throttle body and said thats an engineering thing and that no technician will be able to figure that out. I had gone on Reddit / Mazda CX5 and found one other person with what looked like the exact same issue.
The contact owned a 2015 Mazda CX-5. The contact received notification of NHTSA Campaign Number: 16V064000 (Fuel System, Gasoline) and 16V644000 (Structure) and requested to be removed from the recall distribution list as she no longer owns the vehicle. The local dealer and manufacturer were not contacted.
The contact owns a 2015 Mazda CX-5. The contact stated that there was an abnormal fuel odor inside the cabin of the vehicle. The contact stated that fuel was leaking from the vehicle causing the vehicle to need refueling more often. The contact stated the vehicle was previously repaired under NHTSA Campaign Number: 16V064000 (Fuel System, Gasoline) which required that the fuel pump or tank to be replaced. The contact took the vehicle to a certified mechanic who informed her that the repair only required a sealant and cover that had since corroded. The certified mechanic replaced the electric intake fuel pump assembly. The manufacturer was not made aware of the failure. The approximate failure mileage was 74,000.
THE SERVICE DEPARTMENT PEOPLE OF KOEPPEL MAZDA IN WOODSIDE, NY WAS EVADING TO HELP ME SCHEDULE A SERVICE APPOINTMENT IN CONNECTION WITH THE RECALL. I SPENT MORE THAN 30 MINUTES ON THE PHONE ENDING WITH NOTHING BECAUSE THE PEOPLE IN THAT DEALERSHIP WERE TRANSFERRING ME BACK AND FORTH. THE NUMBERS I CALLED ARE 718-721-9100 AND 718-764-8105. THIS KIND OF CUSTOMER SERVICE IS COMPLETELY UNACCEPTABLE.
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