The CD cracked heads and Turbo cracked heads are different.....but both are cracked heads so they are the same.....Just wanted to post a quick tip for my fellow Canadian consumers, as I haven’t seen it mentioned in this entire thread.
The 2018-2022 base GX trim does not have CD (it finally became standard on all Canadian trims starting in 2023). Also, for 2017, none of the trims have CD in Canada.
So if you’re like me and wanting to hopefully avoid the potential issues with the cracked cylinder heads (and you’re willing to live without the extra bells and whistles of the higher trims), I believe opting for the GX trim might be a good choice (or any trim in 2017) since I’ve only read that this issue seems to affect the 2.5L NA with CD and the 2.5 Turbo engines. Cheers.
Where was the post on the 22 cracked head?Does anyone have a rough percentage of CD and Turbo models with the cracked cylinder heads?
More or less than 1% of vehicles built?
I saw someone post that they had a 2022 that was affected which debunks the thought that it only affect 2019 and older models, but I assume most 22-24 models have low miles and may not show up in statistics for a few years.
I wonder what’s preventing Mazda from solving this issue for good especially since most of their vehicles other than the Miata and CX-90 are using this engine?
60K miles or 60 months warranty isn’t enough for me since I plan to keep the vehicle for 8-10 years assuming it never gets totaled out before that from a collision repair or mechanical repair issue like a cracked cylinder head out of warranty.
Thinking of just getting a Venza instead to not worry about it, but I actually prefer most things about the CX-5 other than this one serious issue.
Post #302. And posted the invoice in #304 to prove it.Where was the post on the 22 cracked head?
It is still happening with the 2022 models. I just got my cylinder head replaced under warranty. It's a CX-5 with a skyactive engine; it's not the turbo. I bought it new in March of 2022 and it only has 13,000 miles on it. There were no warning signs or symptoms other than the low oil level light coming on. I have the oil changed twice a year, so that definitely shouldn't have happened. I stopped immediately so no damage was done to the engine. I hope the replacement head will last.
This is the thing, I often see the % amount of failures brought up as a reassurance. But this isn't like a sensor that goes faulty or a malfunctioning sunroof. The threshold for a % that would make me not worry is way low when the repair is thousands of bucks.
It’d take a while to know. It took 3 ~ 4 years to expose the cracked head problem on the 2.5T; and it took a little less time to expose the cracked head problem on the 2.5L NA with CD. IMO the failure rate has to be lower on the 2.5L NA with CD, hence no updates on head intended by the Mazda. Only a new part number for a cylinder head assembly with most parts pre-installed ready to be installed.I'm curious to know if any replacement cylinder heads have failed. Haven't been able to find any data on that.
My 2021 CX-9 GT is with the dealership now getting the head replaced. It was in the dealership 3 weeks ago getting new seals due to the oil consumption issue at that time there was also coolant in the oil and they replaced the gasket head. Three weeks later, coolant leaking from the head, no coolant in the oil. Have about 55k Km on it and it is all covered under warranty.
Supposed to be picking it up today.
Post 302 says this is a NA CD engine I believe. Not a 2.5t. ?Where was the post on the 22 cracked head?
Yes, this thread, cracked cylinder head with oil leaking, is for the 2.5L NA with CD. Cracked cylinder head on 2.5T will have coolant leaking, not oil leaking.Post 302 says this is a NA CD engine I believe. Not a 2.5t. ?
Yes, this thread, cracked cylinder head with oil leaking, is for the 2.5L NA with CD. Cracked cylinder head on 2.5T will have coolant leaking, not oil leaking.
Maybe put Non-Turbo also? I think I was confused too. Haha. Putting CD in the title would really mess people up considering 75% don't even know they have itJust to help avoid future confusion, I'm going to edit the thread title to make it easier to reference.
Not really.Are most of those cracked cylinder heads showing up before the powertrain warranty expires?
I guess I don’t understand why you limited the MY range between 2018 ~ 2021 on cracked cylinder head problem from 2.5L NA with CD?Since my NA, 2.5 CX-5 with CD is a 2018 model I dropped into my local Mazda service department today (here in Canada) to enquire about cracked heads on 2018-2021 NA 2.5L CX-5's with CD and if they had replaced any. I was surprised when the service manager told me that they had replaced between 20-25 of them in the past 2 or 3 years (I hope I heard that right). He went on to say that he vaguely recalls that nearly all the Mazda NA 2.5 vehicles on which they had replaced heads, had suffered leaking oil from the right rear of the engine., and many owners had smoke coming into the car.
Where did you get this “the 2 main suspected causes as discussed on this forum (poor head casting and/or over torquing of the manifold bolts)” on the cracked head for the 2.5T? Mazda has issued a TSB on cracked cylinder head problem for the 2.5T, and it said clearly the reasons why the crack happened due to the poor design. Mazda has since updated the cylinder head and exhaust manifold gasket after June 2020 to fight against the crack.He went on to say that at least 2 of the 2.5T models had come in for cracked head issues. I told him about the 2 main suspected causes as discussed on this forum (poor head casting and/or over torquing of the manifold bolts) and he said that their mechanics suspected that it may be casting issues although he hadn't heard anything official from Mazda Canada on the cause.
Interesting! I am surprised the Service Manager said anything! Usually if you ask the service dept if they have ever seen a particular issue whey will say no! or you're the first one! I'm going to ask my service dept the same question next time I'm there and see what they say.Since my NA, 2.5 CX-5 with CD is a 2018 model I dropped into my local Mazda service department today (here in Canada) to enquire about cracked heads on 2018-2021 NA 2.5L CX-5's with CD and if they had replaced any. I was surprised when the service manager told me that they had replaced between 20-25 of them in the past 2 or 3 years (I hope I heard that right). He went on to say that he vaguely recalls that nearly all the Mazda NA 2.5 vehicles on which they had replaced heads, had suffered leaking oil from the right rear of the engine., and many owners had smoke coming into the car.
He didn't comment on whether they were all on CX-5's but he did agree that he was aware that other 2018-2021 Mazda models with the 2.5L NA engine, with CD were on the list of potentially having cracked heads.
He also commented that his earlier info from Mazda Canada included a range of VIN numbers that could have cracked head problems but today he noticed that there was no longer any reference to a range of VIN numbers and he agreed with my comment that possibly ALL 2018-2021 2.5L, NA, CD vehicles could now be included in this group that could potentially develop cracked heads.
He went on to say that at least 2 of the 2.5T models had come in for cracked head issues. I told him about the 2 main suspected causes as discussed on this forum (poor head casting and/or over torquing of the manifold bolts) and he said that their mechanics suspected that it may be casting issues although he hadn't heard anything official from Mazda Canada on the cause. He did suggest he found it hard to believe that ALL NA, 2.5L Mazda's with CD could have head casting problems, otherwise they would have had more in for replacement, particularly those with high mileage but still within warranty.
The reference I was making here was not the proof of what has caused the heads to crack but what some followers on this forum have suspected, whether it be for the non-turbo or turbo models.I guess I don’t understand why you limited the MY range between 2018 ~ 2021 on cracked cylinder head problem from 2.5L NA with CD?
I suspect that the only years for which my dealer has replaced heads is 2018-2021....so far.
Where did you get this “the 2 main suspected causes as discussed on this forum (poor head casting and/or over torquing of the manifold bolts)” on the cracked head for the 2.5T?
You reference that Mazda says that:
Cracks may be caused by (amongst 2 other possible reasons):
• "Residual stress generated during production in the cylinder head material may be greater than expected".