I apologize for not responding sooner. I'm still battling with them now. Initially they were claiming lack of maintenance records and front end damage. As of yesterday, 1/23/24 they are officially stating they are denying the warranty due to "outside influence". I'm not sure what that means but their own techs notes state that he found no sign the engine has been tampered with and it is very clean inside with visible metal particles. What I know about this car is this, it was part of a fleet and was fleet maintained with mandatory oil changes every 5-7k miles. The only proof I have is the oil change sticker on the windshield from firestone on 10/1/24 at 15,100 miles. Firestone corporate has the service records but is refusing to give them to me due to "privacy" concerns as I am not the customer on file. Carfax shows the car was at Mazda in West Palm Beach April 2024 stating "maintenance inspection completed". I contacted that dealer and they told me it was there for a recall but nothing else was needed and the car shows all green in their system. It was at another Mazda dealer in November 2024. According to Carfax it got the battery replaced. According to Mazda it also got the battery fuse replaced. Not sure why but I know these cars have battery issues that have been well documented. I don't think its relevant to the engine issue as there are no warning lights or malfunctions to indicate any problems, electrical or otherwise.
As for my hands on knowledge of this particular car. It arrived to me with a rod knock. I immediately inspected the car from front to back. We noticed a small amount of damage at the bottom of the front bumper and a dent in the lower part of the driver side fender where a trailer was backed into it. Other than that the cars exterior looked new and the interior looked and smelled new. The tires show very little wear all around. We pulled the engine covers and looked for any parts being replaced or any sign of tools touching any hardware on any engine components. Nothing has been touched. We noticed the front bumper cover had been replaced. Hood and fenders are original, bumper reinforcement is original so the car was in a minor front end incident that required replacement of the bumper cover but no mechanical parts such as the radiator, ac condenser, grille shutter, heat exchanger, radiator support, ABSOLUTELY NO ENGINE RELATED COMPONENTS HAVE BEEN TOUCHED. We took the oil fill cap off and ran a camera down. The engine looks absolutely brand new with no sludge, no discoloring of any components, nothing but new engine with metal particles. We put the car on the lift and pulled the lower covers to make sure something hadnt been run over and damaged the oil pan or any other components. Again, absolutely nothing has been touched. no damage, no tool marks, nothing. The engine had Pennzoil PZ-01 filter on it, which is what Firestone uses and is the correct filter for the vehicle. We pulled the filter for inspection and replaced it with a OEM Mazda filter purchased from Mazda of Clearwater. We do this with all of our cars, as we only use OEM or Wix filters and Mobil 1 oil. We removed the oil drain plug and drained a few ounces of oil out of the engine to examine. The oil was clean with visible metal particles. We did not drain the oil as it seemed better to leave it as is for the Mazda techs to inspect. The right floor pan cover was cracked so we replaced it with a new one from Mazda of Clearwater. Our inspection showed no signs of any damage to the engine or the plastic transmission pan for that matter, not sure why they went that route but ok, as well as no sign of anyone working on any mechanical part of this car, we towed it to Mazda of Clearwater and left it with their service department.
Heres what we know. Not one single mechanical part on this car has been touched by anyone other than the Mazda personnel at the plant. The engine looks brand new inside with metal particles everywhere consistent with rod bearing failure. There is no sign of lack of maintenance whatsoever. You simply cant neglect your oil changes without some visible sign in the form of sludge, carbon deposits, material discoloring, etc. If Mazdas flagship vehicles new engine can look simply spotless inside yet still come apart like this they have engine problems that will begin to surface. They probably already have.
We towed the car to Mazda of Clearwater and left it with their service department. The Mazda service tech did very little in his "inspection". He pulled it in the shop, made note of the engine noise, made note of the front bumper cover replacement, made note of the engine having no signs of external damage or tampering, and parked it back outside. A few days later I got a message saying the engine replacement would be 15kish dollars and the warranty would not cover it due to lack of maintenance records and front end damage. They have not pulled the oil pan, a valve cover or even bothered to run a camera down it like we did. They just denied it.
There are laws regarding warranty coverage. We will be moving forward with legal action on this. I would really appreciate anyone with internal engine failures posting here so we can find out how big of an issue this is.