I doubt it you harmed anything. There was no load on the engine and the rev limiter is electronically limited so it's not like you hit a physical limit on the engine.
I think that since this is your first new car, you might be a little sensitive to every sound, squeek, blemish, etc. These cars are pretty tough. I'm not sure what kind of testing the engines go through at the factory (lo bux?), but I'm sure they're mostly broken in before they reach you.
I think that since this is your first new car, you might be a little sensitive to every sound, squeek, blemish, etc. These cars are pretty tough. I'm not sure what kind of testing the engines go through at the factory (lo bux?), but I'm sure they're mostly broken in before they reach you.