Bought a car with rusty underside

[ATM]

My friend bought a reasonably new Mazda suv type thing from a main dealer - not mentioning any names. This was around 6 months ago while the post covid car buying chaos was in full effect. He sent the car to his local mechanic today who he knows and trusts. The mechanic just called him to alert him to a very rusty underside. He said it is not dangerous but it needs attention. So I'm guessing there is no recourse with the supplying dealer but I thought I'd ask on here to see if that's true and if anyone has any advice

Thanks

[myvision]

What year and mileage is it?

[steveo3002]

nothing under there that will be getting him a refund or anything

if he plans to keep it , clean it up and soak it in lanogaurd or similar , should help slow it down

mazdas are known for getting scabby underneath

[drmotorsport]

They all do that sir How new is reasonably new?

[InitialDave]

Looks like just bad surface rust to me, I'd say clean it up and give it a lick of paint.

It's quite common for subframes etc to look like that, but as long as it's not got to the point of affecting the strength of the components (which it sounds like the mechanic has confirmed isn't an issue), it's not overly worrying.

[Muzzer79]

Looks like surface rust to me. Nothing to be concerned about.

It's an SUV - has it been used for off-road work or something?

Has it lived by the sea?

[anonymous-user]

I'll have a punt and say that's 6-7 years old. Will be interesting to know the answer!

[TwistingMyMelon]

mazda - they all do that sir

[liner33]

My 5 yr old Mercedes was worse than that and the video of my the underside on my 12 month old VW UP is heading that way

Nothing there to be concerned about but some time with a wire brush and some hammerite would sort it easily

[ATM]

2016

70000 miles

[RazerSauber]

Looks about right. Mazda does have a 10 year corrosion guarantee but quite what that covers is anyone's guess

Edit - 12 year bodywork perforation guarantee. Looks honestly about what I'd expect. Your friend could have someone spend a few hours de-rusting the body shell and seal it up if you like. The suspension components will likely fail for other reasons before the rust gets too bad.

Edited by RazerSauber on Tuesday 17th May 12:28

[anonymous-user]

F20CN16 said:

I'll have a punt and say that's 6-7 years old. Will be interesting to know the answer!

ATM said:

2016

70000 miles

Mostly I think it is as expected for the age and mileage. However, it is slightly concerning that the worst areas are around the subframe mounting points to the monocoque. I would be thinking about having that treated and sealed.

Edited by F20CN16 on Tuesday 17th May 12:16

[normalbloke]

Looks a bit Scottish to me!

[ATM]

F20CN16 said:

However, it is slightly concerning that the worst areas are around the subframe mounting points to the monocoque.

Which pic/s show this?

I dont know my monocoque from my monobrow, thanks.

[poo at Paul's]

Could you post a few more photos up so we can give a proper opinion.....




Looks like a 5 year old car that has not been looked after and never seen any ACF 50, Lanoguard, etc etc. But it looks structurlarly fine. Tell him to clean it up a bit, get some ACF 50 on it and it will be fine for many years.

Take a look under a 6 year old transit and it will look similar on the subframes etc.

[anonymous-user]

ATM said:

Which pic/s show this?

I dont know my monocoque from my monobrow, thanks.

2, 6, 7 and 13

Just my opinion. I don't think there is anything you can do with Mazda on this by the way.

Edited by F20CN16 on Tuesday 17th May 12:38

[ATM]

poo at Paul's said:

Could you post a few more photos up so we can give a proper opinion.....

Sorry No

These pics are coming from a third or fourth party. My friend's trusted mechanic.

[Monkeylegend]

ATM said:

poo at Paul's said:

Could you post a few more photos up so we can give a proper opinion.....

Sorry No

These pics are coming from a third or fourth party. My friend's trusted mechanic.

Whoosh

[ATM]

Monkeylegend said:

ATM said:

poo at Paul's said:

Could you post a few more photos up so we can give a proper opinion.....

Sorry No

These pics are coming from a third or fourth party. My friend's trusted mechanic.

Whoosh

I'm politely asking for people's opinion. Even if I detected some sarcasm I would stick to polite just in case.

[anonymous-user]

Monkeylegend said:

ATM said:

poo at Paul's said:

Could you post a few more photos up so we can give a proper opinion.....

Sorry No

These pics are coming from a third or fourth party. My friend's trusted mechanic.

Whoosh

Seriously OP that isn't yet structural but probably would benefit from from some rust retardant to keep it from becoming so. I used metalmorphosis on my 60 year landrover chassis and that turned all the corrosion black, then spray something over the top to protect the bare metal.