Body dented by itself - Skyactive = Flimsy?

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Ok I couldn't resist. It was 90 degrees yesterday and since my wife did not have to go anywhere I left the hatch open for 6 hours 10:00 to 4:00 PM. in direct sunlight. I am happy to report that the entire body maintained its original form.
 
Ok I couldn't resist. It was 90 degrees yesterday and since my wife did not have to go anywhere I left the hatch open for 6 hours 10:00 to 4:00 PM. in direct sunlight. I am happy to report that the entire body maintained its original form.

My CX-5 sits out in the driveway 24/7. It's been over 90*F here the past week, everyday. Hell, it even hit 103*f two-three days ago. Went out yesterday to vacuum the damn thing with all doors open. It didn't crumble on me.


Though I am afraid that with the highest torsional and tensile strength unibody in its class (like most Mazda's in history), firefighters will have to use arts & crafts scissors to cut me out of the vehicle when I drive it on the s*** roads of NYC on a hot summer day.
 
Going to need a better angle. Also that won't be a main compression, tensile, nor shear stress point of the hinges and shock mount from the hatch... If anything, it would be under tensile force with an open hatch, but it wouldn't form a dent there without dorming a concave dent in the roof first....
 
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Picture uploaded. See 1st post.

Jokes aside, if thats the section I'm thinking it's at- Thats a pretty tough section to dent. I'm not an expert but car sheet metal has "memory" to want to stay a certain shape probably down to the molecule level. It's all dent specialists jargon but there's some truth to it. I still think a foreign object caused the dent.
 
I washed my CX5 today for the first time, I was rather surprised to find the roof give, just with the weight of the sponge!

I've also spent two days under the car painting the chassis/ steel work, tomorrow I'm having a tow bar fitted, so I gave the rear of the car extra attention, I've got to say the chassis is nowhere near as strong as my previous car a Nissan Xtrail, which is probably why the max nose weight (tongue) is only 88kg in the UK, the xtrail was 100kg.

The Mazda is a lightweight car, so a deformed roof were the hatch is connected is entirely possible.

Going to need a better angle. Also that won't be a main compression, tensile, nor shear stress point of the hinges and shock mount from the hatch... If anything, it would be under tensile force with an open hatch, but it wouldn't form a dent there without dorming a concave dent in the roof first....
 
It is flexi! I noticed that with the roof too, I leaned against a door and it buckles in, lean across to lift a wiper before washing and the bonnet flexis an inch,, put your finger about 5 inches up the bonnet from the headlight and move a couple inches outwards and press gentle...like pressing plastic, it is pretty shocking the first time you realise it.
 
I washed my CX5 today for the first time, I was rather surprised to find the roof give, just with the weight of the sponge!

I've also spent two days under the car painting the chassis/ steel work, tomorrow I'm having a tow bar fitted, so I gave the rear of the car extra attention, I've got to say the chassis is nowhere near as strong as my previous car a Nissan Xtrail, which is probably why the max nose weight (tongue) is only 88kg in the UK, the xtrail was 100kg.

The Mazda is a lightweight car, so a deformed roof were the hatch is connected is entirely possible.

Lightweight does not necessarily mean it is weak... There are different grades of alloys with different carbon counts with different tensile strengths. Being lightweight doesn't even remote relate to deformation...

Do me a favor and look up the torsional stiffness and rigidity of the SkyActiv chassis. That includes the Mazda6 as both run on nearly identical underpinnings. Then look at front and side impact ratings.
 
I didn't notice the bonnet flex.

I started on the roof as normal, so after that flexed I was careful not to be so heavy handed.

I've had the bonnet up (hood) and was surprised that it was so heavy.

Overall I'm very happy with the quality of the car.
It is flexi! I noticed that with the roof too, I leaned against a door and it buckles in, lean across to lift a wiper before washing and the bonnet flexis an inch,, put your finger about 5 inches up the bonnet from the headlight and move a couple inches outwards and press gentle...like pressing plastic, it is pretty shocking the first time you realise it.
 
I was surprised it was heavy too and that it needed an old fashioned bar to hold it up. Too used to vw plushness in the previous years! Flexi is fine, light and good fuel consumption. I'm sure it works perfect in a crash as the tests have proven, it doesn't cause me any concern at all.
 
Went to a Polo match on Saturday and did tailgating with the CX-5. The hatch was open for about 5 hours, the temp. was around 90F and the wind was blowing pretty hard. The body has no damage and everything looks like new.
 
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Went to a Polo match on Saturday and did tailgating with the CX-5. The hatch was open for about 5 hours, the temp. was around 90C and the wind was blowing pretty hard. The body has no damage and everything looks like new.

You had better inspect it for damage more carefully - there is no way such a flimsy car could handle a tailgating party without some kind of visible damage!

I don't know if your New England mosquitoes are as big as the ones here in the NW but I saw my hood buckle when one landed on it. Now I mix DEET in with my car wax and haven't had any further mosquito damage.

But I'm really starting to worry about horsefly season. lol!

Seriously folks, we've already heard first hand accounts of CX-5's that survived hailstorms without a single dent. I have no worries that the CX-5 is durable. If they were susceptible to denting on their own the dealer lot would be full of dented CX-5's.
 
I have to add it is obvious Mazda was extremely diligent in shedding pounds with the CX-5. The hood tremble, mirror shake, etc was immediately apparent to me on the test drive. My wife's MZ5 is somewhat fragile in the hatch area, too. Noticed this while at a drive-in backed up with the hatch open for the kids earlier this year. As you open/close the hatch slowly you can see the hatch area around the hinges flex quite a bit.
 
Ok, if there are dents in the exact spot that the hatch hinges meet the car I would honestly guess that the more likely cause would be that someone, at some time, somehow attempted to extend the hinges beyond their normal range of operation which would have to have been done with the hatch shocks disconnected. Maybe it was at the dealership before the car was purchased and the sun happened to hit it just right the other day so that the OP noticed it for the first time. Maybe the hatch was open and someone backed into a garage and caught it a little too late.

There could be numerous legit explanations, but unless some proof can be given to the contrary, I really don't think that leaving the hatch open for an hour is one of them, especially given that the hatch shocks hold a good deal of the weight when the hatch is open.

So I went out to my car and tried pressing on the sheet metal in the area you have the dent. It's actually a pretty solid area and the metal doesn't really want to deform much. If you want to feel soft, press down on parts of the hood or roof. However, when I opened the rear hatch, the area of the dent is about the same height of where the bottom of the gas struts mount. And the way the sheet metal has been shaped and welded, it seems plausible that if the gas strut mounts were pulled from someone trying to over extend the gas struts, it could flex the dented area in such a way to where it would bend the sheet metal inward, forming the dent.

This would also explain why there is a similar deformation on the opposite side. Maybe the upwards force to over extend the trunk was done on the driver side?
 
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it seems plausible that if the gas strut mounts were pulled from someone trying to over extend the gas struts, it could flex the dented area in such a way to where it would bend the sheet metal inward, forming the dent.

This would also explain why there is a similar deformation on the opposite side. Maybe the upwards force to over extend the trunk was done on the driver side?


Any chance someone tried to back it in or out of an opening with the hatch open and caught the hatch on the top edge of the opening?
 
Any chance someone tried to back it in or out of an opening with the hatch open and caught the hatch on the top edge of the opening?

Yes, most of us are thinking something very similar (as noted in earlier posts).
 
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Despite the original post and some of the responses, I'm impressed with the fact you guys could keep this thread somewhat on topic...That said, I would really appreciate it if everyone tried harder to keep threads here clean and on topic...Thanks!

Please note that I've cleaned up the thread a bit (left some posts for a good laugh)...Remember our motto here is "Fun, Friendly and Informative"...Let's keep it that way...Thanks again!
 
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