Owner denied warranty for being outside OCI by 600 miles and short tripping.

Even if it was changed at 3k they'd blame him on short tripping even though he still put 30k on it in under 3 years so he was changing is oil about twice a year. Work commute is short but still drives it elsewhere and likely lets it idle when at school like I always did which isn't that bad for an engine. If mazdas engines are such junk they can't even generate enough oil flow to lubricate at idle or when not fully warmed up that's their fault not the customers.
Nice trip around Fantasyland.
 
I saw that too but I don't see anything wrong with that. It could have had an oil change done at 5300 and the next at 5900 to average 5600 which is a tight spread. I doubt he was doing a 3k interval and doing the next at 8200 miles averaging out to 5600. 30k in under 3 years is about 2 changes a year. in 2 years that's 3 a year so I wouldn't say that's neglect.
Or he could have one done at 2,000 miles and another at 13,000 miles. You don't know, nor do we, and the OP hasn't provided details in that regard
 
Really? Can you show us that it happens frequently? Thanks.

I'm not inclined to go back through my browser history to sort out the stuff, but I was on cx50forums, mazda247 and other forums looking for good data points. WarrantyWeek is also worth a browse, I'd note that the warranty claim rate for Honda in 2023 went up substantially. I am not trying to convince others of my opinion, I've satisified my desires. Other folks can draw their own conclusions. We don't have to agree on it. Plus, a lot of this is dependent on your dealer's willingness to support the customer.
 
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For reference, I just calculated my average trip distance and length for my 2023 CX-50. At the time of my last oil change, my overall average distance per engine start was 9.8 miles. That is 2713 engines start over the course of 26498 miles. My overall ave run time per trip is 16.5 mins.
 
For reference, I just calculated my average trip distance and length for my 2023 CX-50. At the time of my last oil change, my overall average distance per engine start was 9.8 miles. That is 2713 engines start over the course of 26498 miles. My overall ave run time per trip is 16.5 mins.

how would this work with automatic stop/start equipped cars? the average could be 1-2 miles per start.... but few true cold starts.
 
I have a couple of neighbors who are quite mindless in ways they drive and care of their cars. Many start the car and speed away a second later on cold engine, short tripping is a norm for most, not changing oil, rattles and engine screeches are ignored, dead headlight or stop lights' bulbs replacements ignored, oil leaks and puddles, low on air tires, etc. Good area thou, and not cheap, most have good 'intellectual' jobs. Some have fancy cars but think that car a wash is maintenance.
Well, Mazda may have had a reason to deny warranty, or may have not a good one, we may not know whole story.
 
View attachment 259165
Here is the block diagram for Mazda's Oil Life Monitor, so it should be intelligent enough to account for all the variable except dusty conditions with the deterioration determination block. I'm assuming the deterioration determination block has access to all the sensors in the PCM so it can calculate a deterioration factor.

Exactly my point. Thanks for the IOLM info.

If the "victim" in this storyline was going by the IOLM, and the IOLM is programmed to account for a host of parameters, then why would "severe service" be anything to even pay attention to? Why have a "severe service" conditional statement if the IOLM is doing its job? And if the "severe service" is so important and the IOLM is incapable of discerning severe conditions, why even have an IOLM???

Again, I'm not convinced this isn't just an exercise in vague "what if" scenarios, but the lesson to take from this is to read and learn about your warranty, read your owner's manual, and be ready to defend any choices you make. Be willing to go to the mat to argue your side; don't roll over. Fight the good fight. Don't let stupid vague double-talk override common sense.
 
The truth here is the engine likely had a manuf. (or other) defect, the engine failed, and Mazda saw a get out of jail free card and took it. No way an average of 600 miles over on OCIs should blow an engine. If that were the case 90% of cars on the road right now would be pulled over on the shoulder or in a ditch.

Also if there is an OLM yet there is a stipulation not to follow it due to severe service that’s just a bad OLM system. My Honda minivans OLM drops like a rock on short trip driving - it can hit 15% oil life and trigger the indicating light in 4500 miles.
 
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I had a statistics professor always say that what an average is is merely the midpoint between the two extremes. It’s also where something spends the least amount of time.
I believe that's the median.

The average is the total of all the values in a set divided by the number of values.

The results can be widely different.
 
Nuggets of info make you go down rabbit holes. It's not that this one instance is so glaring, it's that it shows you a pretty common trend. And, if you're on the fence between say ... a CRV and a CX50, and you're flipping a coin, I'll let the bad warranty stories sway me.
This one instance shows a pretty common trend?

I'd let a good number of stories sway me as well.... And by good number, I mean dozens, if not hundreds. There are people in thread saying Mazda builds the worst engines in the world, they are crossing them off their purchase list, and all sorts of knee-jerk comments. Over this one Reddit post? What a joke.

I'll start another common trend.... My Fiat, purchased brand new in 2019 with only 8 miles on it, now sits at 79,500 miles, and hasnt been to the dealer even once, and has had exactly zero of its factory parts replaced. There you go CX50 haters, buy a Fiat! Most reliable car on the planet. Says me, a guy who also has a Reddit username but has never once used it.
 
This one instance shows a pretty common trend?

No, you go down rabbit holes and find lots of examples of the same thing. Mazda warranty issues are hardly uncommon. One story even had a guy with under 11K miles on his car have a failed engine, but they charged him for new mounts and hoses that needed to be replaced when the engine failed. Those are 'wear' items.

Heck, it's not like the CRV is without horror stories too, with fuel dillution and other issues.

Like I said, I could flip a coin on which one I preferred. Do I think Honda's warranty will be better for me? Yep.

Regardless, people do go online to complain, happy folks are less vocal. I'm sure plenty of folk love them. That's fantastic. If they were complete crap, they probably wouldn't still be in business.

You pick your favorites.
 
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