2021 CX-9 brakes feel soft?

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Mazda 6 iTouring 6MT
So my 2021 CX-9 is the 5th Mazda I’ve owned since 2013 and I noticed the brakes just feel very soft. I feel like I have to apply more pressure then I should, has anyone else experienced this?

My wife drives a CX-5 and she made me drive the other day (after only driving the CX-9 for 2 months) and when I went to apply my foot on the brakes, the car jerked hard as if I was slamming on the brakes. It was like a night and day difference.
 

sm1ke

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Canada
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'18 CX-9 Signature
First thing I'd do is check the brake fluid levels under the hood. If it looks ok, I'd take it to the dealer and probably test drive other CX-9s on the lot to see if they feel the same. If yours feels different after test driving the others, ask the dealer to troubleshoot and resolve the issue under warranty.
 
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Mazda 6 iTouring 6MT
First thing I'd do is check the brake fluid levels under the hood. If it looks ok, I'd take it to the dealer and probably test drive other CX-9s on the lot to see if they feel the same. If yours feels different after test driving the others, ask the dealer to troubleshoot and resolve the issue under warranty.
I’ve been thinking about doing the same w taking the car to the dealership and testing another cx9 out I just need to find the time to do it, thanks.
 
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Like Sm1ke said, check brake fluid for safety. If all good you definitely have to compare it with another cx-9 to see if it is really an issue. I wouldn’t expect the brakes on the CX-9 to feel the same as the CX-5. I always have that kind of weird feelings for the first few minutes when i drive one of my car for a while and then jump in my second one.
 
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I have a 2019 CX9 GT and have the same feeling with the brakes feeling spongy / soft. I was thinking of getting a brake flush done thinking maybe air and moisture is in the lines causing it. I only have 15,000 miles on it.

Has anyone put in DOT 4 brake fluid? I know manual says DOT 3 but I know DOT 4 is compatible and could be better.
 
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Mazda CX-9 Grand Touring 2016
Spongy brake feel is most likely from air in the system. The brake system can have the air bled out. There is no particular need
 
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Mazda CX-9 Grand Touring 2016
Spongy brake feel is most likely from air in the system. The brake system can have the air bled out. There is no particular need
Phone rang before I finished....

No need to flush the brake fluid unless there is a real reasons...more than a few years old resulting in a high moisture content, known contamination, etc. Do get the air bled out.

Has anyone put in DOT 4 brake fluid?
No benefit for this. The higher the DOT number the higher the wet boiling point (defined as containing 3.7% water) of the fluid is. It ranges from DOT3 to DOT4 to un-official DOT4+ to DOT5.1. These are all complex chemical mixtures of polyglycol ether compounds. Borate compounds are added for the increase in wet boiling point, but--the same borate compounds cause the fluid to absorb moisture more readily thus requiring more frequent flushes of the fluid. Brake fluid is intended to absorb moisture from the air and mix it throughout the fluid. The fluid will get moisture. What we don't want is either pockets of water laying in the low points (which might happen with the unsuitable silicone based DOT5 fluid) or so much moisture in solution that the heat of emergency braking causes the water-fluid mixture to flash to steam and the brake pedal uselessly go to the floor.
https://epicbleedsolutions.com/blogs/faq/what-is-meant-by-wet-and-dry-boiling-points-of-brake-fluid#
https://www.bendix.com.au/bendix-news/bendix-high-performance-dot-3-dot-4-brake-fluid-testing

I was in the local NAPA auto parts store buying brake fluid one day. I took it to the counter. The counterman said, "This is synthetic brake fluid. Are you sure you want this?" All brake fluid is synthetic. What they print on the label is just marketing blather.
 
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2021 Acura RDX
Just for what it's worth, the brake's on my old 19' CX-5 GTR sucked! That was my biggest complaint about the vehicle. Otherwise, I absolutely loved it!
 
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