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Bad differental on 2023 Cx50

1063 Views 26 Replies 14 Participants Last post by  Billyt
Only have 700 miles on my Cx50 2023 Brought it to the dealer they had it on the lift and decided
its the differental creating the humming noise at speeds of 20 to 50mph what a lemon.Warning
do not buy cx50 . looking on this post I am not the only with issues with Mazda
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They are repairing it under warranty, right? All car makes and models have occasional problems. One diagnosed and repairable issue does not "a lemon" make.
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Only have 700 miles on my Cx50 2023 Brought it to the dealer they had it on the lift and decided
its the differental creating the humming noise at speeds of 20 to 50mph what a lemon.Warning
do not buy cx50 . looking on this post I am not the only with issues with Mazda
Omg, it’s a very uncommon issue.
Warning….do not buy any new vehicles as they all have issues of some sort. Some a lot more than others.
Lemon? Hardly, you have had one rare issue in your ownership that will be repaired under warranty.
Omg, it’s a very uncommon issue.
Warning….do not buy any new vehicles as they all have issues of some sort. Some a lot more than others.
Lemon? Hardly, you have had one rare issue in your ownership that will be repaired under warranty.
forums exist for people to complain that's all they really are that and fix those complaints
forums exist for people to complain that's all they really are that and fix those complaints
Well, that's a depressing statement.
Displaced rage, much? I’m sorry for your dealer and service advisor. Sell it for a huge loss once it’s all fixed. That’ll show ‘em!
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Only have 700 miles on my Cx50 2023 Brought it to the dealer they had it on the lift and decided
its the differental creating the humming noise at speeds of 20 to 50mph what a lemon.Warning
do not buy cx50 . looking on this post I am not the only with issues with Mazda
Lol. Which make of auto are you going with now? I assume based on your standards it would have to be a vehicle that’s never had an issue in the first thousand miles. Let us know what you choose, we’re all dying to know





Or not
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Displaced rage, much? I’m sorry for your dealer and service advisor. Sell it for a huge loss once it’s all fixed. That’ll show ‘em!
Indeed. Really motivates the dealership to provide excellent service when someone like the OP clearly hates anything ever that has to do with vehicles when they have issues,
Well, that's a depressing statement.
forums exist for people to complain that's all they really are that and fix those complaints
And not very accurate.
I have received a lot of excellent information from many forums over the years.
Forums are though like a lot of information found on the web, you have to filter through some garbage.
First hearing on the CX50 in this forum. Upsetting yes but as someone that knows lemons very well if they get the replacement quickly and repair it correctly let it ride its a beautiful machine. Many manufacturers have some sort of issue but the fact that yours will be replaced under warranty and it's documented I wouldn't panic yet. My Cadillac CTS had the same issue and once replaced ran it for 200K then sold it for a good buck for another vehicle. Luck of the draw unfortunately and they will tear it apart to see what failed and hold the vendor if it's 3rd party accountable.
forums exist for people to complain that's all they really are that and fix those complaints
Very untrue. A forum is a discussion ground. Lots of good information have been shared. e.g. User ASH8 has shared very good advice and provided various firmware updates which could be done by users but dealers will not do unless there was a verified issue.
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If we don't share we get screwed! That's what this and other forums are about so thank you all. You think manufacturers are straight hello now that's what created the TSB that you only know about after you bring something specific to their attention. Praise this forum and appreciate it as i do.
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If we don't share we get screwed! That's what this and other forums are about so thank you all. You think manufacturers are straight hello now that's what created the TSB that you only know about after you bring something specific to their attention. Praise this forum and appreciate it as i do.
From the dealerships perspective, why would they fix something that isn't broken? (or not exhibiting issues during inspection)??
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Well Nomore welcome to the Mazda cx50 forum!! Guessing you’ll never be back :(. Also probably first time Mazda owner. Yes I’d be pissed too! But on the bright side they are fixing it:oops:. Could’ve said they don’t hear anything. But hopefully they fix it and that’s your only problem. The mistake made was buying the first year of a new car. Problems are going to happen. Probably would have been smarter to lease. Turbofan said it all ! Sell it for a huge loss! That is really the shocking thing. That would be saying they’re not worth what we paid:oops:. And Mazda isn’t standing bye their car. Yes all cars devalue as they leave the dealership. You’ll take a loss but not a huge lose! So sad to hear this. Mine has been good so far with no complaints. Hope it’s as good as the Outback I traded for it. Plus I do believe your differential problem was mentioned before.
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Well Nomore welcome to the Mazda cx50 forum!! Guessing you’ll never be back :(. Also probably first time Mazda owner. Yes I’d be pissed too! But on the bright side they are fixing it:oops:. Could’ve said they don’t hear anything. But hopefully they fix it and that’s your only problem. The mistake made was buying the first year of a new car. Problems are going to happen. Probably would have been smarter to lease. Turbofan said it all ! Sell it for a huge loss! That is really the shocking thing. That would be saying they’re not worth what we paid:oops:. And Mazda isn’t standing bye their car. Yes all cars devalue as they leave the dealership. You’ll take a loss but not a huge lose! So sad to hear this. Mine has been good so far with no complaints. Hope it’s as good as the Outback I traded for it. Plus I do believe your differential problem was mentioned before.
As has been mentioned countless times, while the 2023 CX 50 is a first year production vehicle many of its components have been in service in their other vehicles for quite a few years.
So while it may appear to be a totally new vehicle it has many proven components from the CX 30 and 3.
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Only have 700 miles on my Cx50 2023 Brought it to the dealer they had it on the lift and decided
its the differental creating the humming noise at speeds of 20 to 50mph what a lemon.Warning
do not buy cx50 . looking on this post I am not the only with issues with Mazda
Another BS poster on these forums. Lol


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Well again it’s shocking with some of the comments here. Got to say spending 42+k on a new car in 2023 I’m not expecting anything to go wrong. 42k! A rear differential after 700 miles is a real eye opener! Who cares that they used proven parts. Every new model car uses proven parts. It’s the new parts used to mesh them together is what needs to be seen how they work together. So when buying any New model of car first year of production your the test dummy. Yes most shops will keep records of problems and the later years fix them. That’s a fact. I know this but did disregard it. Again first year so Mazda has to be expecting some problems. They’re going to fix it. But a new car owner who maybe doesn’t even know it’s a new model and has a problem like this is going to have a bad taste in his mouth about Mazda. Well anyone who blows a differential at 700 miles is going to have a bad taste. If not there’s got to be reason you don’t care.

Lots of great reviews on this site with most happy with their cx50. But the bad reviews ARE the ones we need to hear and remember. These may be the recurring problems that may find their way to our cars. Seem there’s been some reviews of dealerships who don’t want to fix things. Having records of others past failures will come in handy when the dealer says “that ain’t your problem. You’re hearing things” :).

Shame now is that you guys threw out all your I love Mazda bs and this guy probably will never come back and tell us what’s going on. Did the dealership fixed the problem, did they fix it in a reasonable time, did they supply a loaner car. And 2 years later how the car is still running. I don’t get it? Why wouldn’t you want to know all the facts? A bad diff at 700 miles. Who are you guys? Bad mouthing people with car problems doesn’t help anyone. Well nomore I hope you come back.
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Well again it’s shocking with some of the comments here. Got to say spending 42+k on a new car in 2023 I’m not expecting anything to go wrong. 42k! A rear differential after 700 miles is a real eye opener! Who cares that they used proven parts. Every new model car uses proven parts. It’s the new parts used to mesh them together is what needs to be seen how they work together. So when buying any New model of car first year of production your the test dummy. Yes most shops will keep records of problems and the later years fix them. That’s a fact. I know this but did disregard it. Again first year so Mazda has to be expecting some problems. They’re going to fix it. But a new car owner who maybe doesn’t even know it’s a new model and has a problem like this is going to have a bad taste in his mouth about Mazda. Well anyone who blows a differential at 700 miles is going to have a bad taste. If not there’s got to be reason you don’t care.

Lots of great reviews on this site with most happy with their cx50. But the bad reviews ARE the ones we need to hear and remember. These may be the recurring problems that may find their way to our cars. Seem there’s been some reviews of dealerships who don’t want to fix things. Having records of others past failures will come in handy when the dealer says “that ain’t your problem. You’re hearing things” :).

Shame now is that you guys threw out all your I love Mazda bs and this guy probably will never come back and tell us what’s going on. Did the dealership fixed the problem, did they fix it in a reasonable time, did they supply a loaner car. And 2 years later how the car is still running. I don’t get it? Why wouldn’t you want to know all the facts? A bad diff at 700 miles. Who are you guys? Bad mouthing people with car problems doesn’t help anyone. Well nomore I hope you come back.
The facts are known on the defective differentials already.
So if you want to know the facts do some research, instead of dissing owners who voice their opinions.
To quote you….”Bad mouthing people with problems doesn’t help anyone”

“A bad diff at 700 miles. Who are you guys?”

Are you aware that mechanical devices have a certain percentage that will have issues or will fail?

That’s just how it is. Take a look at the numbers of owners that have no issues with the differentials as an example.
The example of failures occurring with the 2.5 Turbos in the CX 30’s becoming oil burners due to exhaust valve seals doesn’t make them a bad vehicle.

Go read comments in any other manufacturers forums on any of their models and you will find very similar
comments on failures of many different components.

Its not a happy moment when it happens to you and your vehicle, but when a poster comes out guns a blazing saying “ what a lemon, don’t buy a Mazda”, what sort of response were you expecting from satisfied owners?
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They are repairing it under warranty, right? All car makes and models have occasional problems. One diagnosed and repairable issue does not "a lemon" make.
My CX50 has been at the dealer since the end of March. They’re waiting for a special tool to be fabricated and sent to them from Mazda USA to address a faulty fuel gauge sensor. The estimated time of delivery is the end of June. My dealer has put me into loaner and doing all it can to get it done sooner.

I don’t expect perfection and this happens sometimes. Of course I wish there weren’t any problems, but cars are made by men and stuff fails. As long as they continue to keep me updated and in loaner vehicles I won’t complain. Now if anyone should be upset it me and I’m not.
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The facts are known on the defective differentials already.
So if you want to know the facts do some research, instead of dissing owners who voice their opinions.
To quote you….”Bad mouthing people with problems doesn’t help anyone”

“A bad diff at 700 miles. Who are you guys?”

Are you aware that mechanical devices have a certain percentage that will have issues or will fail?

That’s just how it is. Take a look at the numbers of owners that have no issues with the differentials as an example.
The example of failures occurring with the 2.5 Turbos in the CX 30’s becoming oil burners due to exhaust valve seals doesn’t make them a bad vehicle.

Go read comments in any other manufacturers forums on any of their models and you will find very similar
comments on failures of many different components.

Its not a happy moment when it happens to you and your vehicle, but when a poster comes out guns a blazing saying “ what a lemon, don’t buy a Mazda”, what sort of response were you expecting from satisfied owners?

I understand your upset co.ing from a 53K beauty and at 3000 miles the tranfer case was bad and replaced after a few weeks in the shop and then a growl which was thought to be a differential which after backorder and 3 weeks an engineer came out for another problem vehicle drove mine and said I'm not replacing a differential and give it back to the customer. I pick it up drive out of the dealer and grind growl thud and right back to the dealer. Finally diagnosed a bad driveshaft carrier bearing ordered a driveshaft only 2 in the country. 4 days later repaired and on my way. Total 3 months in shop. I lemoned the truck and after 6 months truck was bought back and I was charged mileage. This wasn't a Mazda and was a first model year vehicle. The fact the cx50 is made hear in the US helps me feel if parts are needed they can take them off the assembly line if needed for a quick re p air turnaround keeping in mind still have supply chain problems. After your repair file a complaint with Mazda citing your reliability concerns with such an early failure and demand a good faith extended warranty which I was successful previously with another manufacturer or two lol. My luck sucks and if there are 10000 vehicles with excellent reliability records I have been the lucky one to get the lemon. If they
My CX50 has been at the dealer since the end of March. They’re waiting for a special tool to be fabricated and sent to them from Mazda USA. Estimated time of delivery if end of June. My dealer has put me into loaner and doing all it can to get it done sooner. I don’t expect perfection and this happens sometimes. As long as they continue to keep me updated and in loaner vehicles I won’t complain. Now if anyone should be upset it me and I’m not.
A special tool for what
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