If they are deep, you will probably need to use various levels of sandpaper (to high grit). The cheat way for shallow scratches is to use one of those blades for a retractable box knife (long one), and kind of scrape it (opposite direction of cutting). This will make it have a dull finish, but a quick touch of flame (not enough to really melt), can bring back the sheen.

*caveat about using proper safety of course.

Hi the above will just make it look worse.a product called autosolve if used to see if it wil do maybe your best bet.

A car is supposed to look used, otherwise it's just an useless ornament.

There's not much you can do. Every time you use it you are going to scratch the bottom. Just run it and have fun with it. That's what they are for.

I have a Tamiya rc car and I took it off road to try out it's new 4wd. I took it on gravel and I regret doing so as underneath the car is full of scratches. I would love it to look like new with no scratches or to make them less visible as I love my car and would like it to look loved instead of it looking ragged. Can anyone help me ? There deep scratches.