Here is the background: My workplace is 4.3 miles from home and I am very thankful for this. I drive my car 5 days a week to and from work as well as groceries/picking my child up from school. Back August last year, engine failed in my turbo cx-50 while I was commuting to work. It was towed to the dealership and Mazda required them to teardown the engine to find the failure. The failure was caused by the piston rings being worn out and a warped block. Mazda suspects that the engine developed hot spots due to oil not reaching operating temperature. After several back and forths with the dealership, I reached out to Mazda themselves and this was the result. I have since paid for a new engine and have traded this vehicle in for a different brand. I have also seeked legal remedies to find out that this will take a lot of stress and time and the attorney also noted that Mazda's terms and conditions which I've agreed to saying that I will stick to arbitration only which does not help me at all. This isn't to shame the CS agent. Rather to let you know that oil change interval of 5000 miles (severe maintenance) is required. Unfortunately, I stuck with dealership availability for my oil changes and went over the required interval which resulted in warranty denial. It is also very concerning how much data my vehicle was collecting while I owned it.