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Advice sought by experienced forumites...Backed into a pile of dirt in the dark the other day. End result is a few deep scratches on the left underside of the rear bumper.

Question is whats the best course of action to fix it.

Probably wouldn't claim on insurance because it would effect my no claim bonus.

I guess the whole bumper would have to be resprayed to fix it properly, maybe not.

Thought about using a wax stick but thats only a coverup

Any ideas about how to go about it and what it might cost?

try using a cutting wax. I have used Kitten cutting wax (I think no.2) and it has done wonders for light to medium scratches. Since yours are deep, it might help with at least getting rid of the white ... unless the white is actually the fibreglass.

If you end up touching it up, make sure the colour match is spot on otherwise it will actually stand out more.
Strange that a pile of dirt and rocks can do so much damage though ....

Thanks I think its into the fibreglass( is the fibreglass white under the paint?)

Might try your suggestion but Ive been thinking of trying a very fine paint brush and genuine mazda paint to fill in the scratches then cut it back to smooth it over

Has anyone tried this before with any success?

Isn't the white stuff the undercoat? If it's a genuine bumper then it's plastic and coloured black. Seeing as it's virtually underneath the car I would try a very fine brush and some Mazda touchup paint and hand paint it. Though you might try a bit of cutting compound first. You might find it reduces the damageed area and the amount of touching up you'll need to do

Thanks Mate I thinks thats the go

awesome result but a bit scary I guess as longs as you dont sand too deep

have you ever tried it?

whats a pc ?

No, haven't tried it. PC = Porter Cable random orbital sander/buffer.

As people have said - super fine brush, a nice bottle of matched paint, lie down on the ground and very carefully paint each scratch. As it's down so low (and a 5 is low too), no one will ever see it.

Found a guy who covers the central coast and sydney who does a damn good job on bumper scratches

He works mostly on mercs and daimlers and mixed a perect match for my paint

Cant see where the scratches were at all

wow
looks great

Wow looks great, how much does it cost to fix?