We have had ours since April and usually use it locally to drive to the parks for walks but took it from Dallas to Fort Worth today. It was smooth and quiet. We've loved every minute of it and I am always impressed by the interior and sound system. We had a silver CX-5 prior and my A4 is white so we are pretty conservative, but we decided to go for it this time and went for the Soul Red Crystal. We love it. When we park it on a hill and go for a walk we can see it literally glowing from a distance. It stands out from everything else in the parking lot. IMO especially the lines of the rear end of the car look great in that color.

 

I just got possession of my new CX-30 GT (in Canada) the other day. Beautiful car, can't rave about it enough. However, as I was making a 200km drive to see family for the week, I started hearing a high pitched whining noise coming from the engine area... As I kept driving, I noticed the sound was in tune with the transmission... Meaning, the pitch was proportional to the acceleration and shifting... And disappeared once I rev'd on Park or Neutral...

After researching online, many other Mazda3s and CX-5s have had this issue... There's even a technical service bulletin (TSB) describing it exactly:

https://www.tsbsearch.com/Mazda/05-002-19

For a brand new car to have this problem pretty much right off the lot (I'm at less than 400km/250miles) is massively disappointing and concerning to say the least. And yes, I did test the car before purchasing it, but did not hear anything. The noise actually starts after driving for a few minutes, and you need complete silence in the cabin. Once you do hear it, you can't "unhear" it anymore.

At least the chief mechanic at the dealer acknowledged the issue after he test drove it. But since there are no recalls nor TSBs for the CX-30, he's gonna have to talk to Mazda Canada, and see if they're willing to approve a fix. So, to be continued. Unbelievable, a brand new car...

 

Damn dude I feel so sorry for you,I would instantly hate brand for rest of my life. dont dheybtest nee cars? like wtf? I bought 08' new mazda when it came out, I cant imagine my disappointment and frustration is she had fault in it..

 

While it is frustrating, Mazda stands behind their product. Hopefully it will be a quick fix. Don’t accept anything but perfect.

 

Almost 7,000 miles on mine. Great car. No complaints other than a faint rattle sound coming from driver's side front wheel area. Possibly strut. Going to dealer tomorrow and taking a tech for a ride to show him. It's driving me nuts.

 

Thanks, dealer seemed willing to get it fixed. I just don't know if Mazda Corporate will be as eager. I hope you're right. Again, the problem with a new model like the CX-30 is it doesn't have a technical history to base the repairs on. I'm afraid they'll tell me "you're the only who has this issue, we'll have to wait to see if others have it also, then we'll make a decision", and play me around for a while. I can't stress how frustrating it's been buying a car at this price and having this issue right off the lot. But I'm staying positive.

 

The TSB is 1-1/2 years old and a re-issue of previous TSBs. My guess is, it might be updated to cover additional years/models. Although, replace the transmission is the correction, you'd think that after 3/19 there wouldn't be any bad transmissions in stock.

I had a NC Miata with manual transmission that was very notchy to shift. I changed the transmission oil myself, to Redline synthetic, and the problem went away. Probably many other synthetic brands of oil might have had the same result. It appears, by a fast search, that there are synthetic ATF FZ fluid brands out there. Maybe change the fluid, might help. probably can't hurt.

 

I updated my other thread also. So the dealer confirmed my brand new CX-30 has a faulty transmission. Either it was defective to begin with, or it was badly assembled and broke as soon as it hit the road, it could be either says the chief mechanic. Mazda Corporate decided it'll take too long to identify the underlying issue, so they're simply ordering a new transmission.

I know my case is rare as the CX-30 is still new, but I can't understand how this is acceptable by a company like Mazda. How can I remain confident as an owner?

 

I would be happy you're getting a new transmission. They are very complex and I'd rather them just replace it.

 

In my case, I lost confidence with Mazda now that the CX-30 transmission, and from another user - engine malfunction, issues. My first issue issue with Mazda was on my 2019 CX-5 GT (non-turbo) early last year. When I bought it, the window sticker did not mention that the vehicle has Cylinder De-activation (CD). I only knew that my CX-5 has CD is when I got a recall notice regarding software fix for the CD to function properly. My second issue was when I traded that non-turbo with a 2019 CX-5 GT (turbo) last year - I heard from a Mazda technician that the turbo engine does not have CD - the first time I took it to the highway at speeds over 55 mph, I felt a severe vibration. That turned out to be a extra rubber gum on one of the tires. The mechanic from another Mazda dealer found the culprit and shaved the extra rubber gum off. I emailed Mazda Customer Care about the issue and requested for a replacement tire but I got a response telling me to bring the issue with the tire manufacturer. Really? Why in the first place the vehicle left the assembly line with a tire that has extra gum on it? I was going to give Mazda another chance because I was planning on downsizing to a CX-30 when the turbo version will come out but with the issues it’s having, I’m done with Mazda. There are only a few choices for me because most of the car manufacturers are embracing CVT’s which I hate so much.