do break it in
I break in the car for a full 2500 mi. It is painful.
I do extreme break in, like a granny driving except varying speeds and nothing fast. This is for the first 500 miles.
I continue to 1000 miles with a modified granny driving. That means up to the speed limit but nothing sudden and varying the speeds a lot.
Up to 2500 mi., I still to it.
Part of break in is also not to lug the engine if you have a manual. I don't do that the first 1000 miles and try not to do it the entire 2500 mi.