[xxx] the engine does not idle. When I would slow to stop for a stop light or stop sign, the ngine would quit and require restarting the engine. The check engine light remained illuminated continuously, and, the red battery light would illuminate. A service station diagnosed the problem as either an old battery, and/or, an alternator. Ourisman Mazda, 801 rockville pike, rockville, Maryland 20852 [301-424-7800] advised me this morning, Saturday, 01/13/2018, that: 1.)the problem is the mass air flow filter that required replacement. 2.)there are no recalls for Mazda mass air flow sensor failures. 3.) total parts and labor are approximately, $575. 4.)the dealership said that the 5 years / 100,000 warranty did not apply to the mass air flow filter. 5.)when I brought the car to ourisman Mazda, on 01/12/2018, to have the problem diagnosed. I was asked when and where I last filled the gas tank, (as if a mass air flow failure mimics contaminated fuel. The car was purchased, new, in December 2012, , and has approx.., 75,000 miles of urban / Suburban driving, not under dusty conditions. The risk is that the car could unexpectedly stall and with no way to recover quickly. Parts of this document have been redacted to protect personally identifiable information pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Potomac, MD, USA