Most brand new cars are ragged shitless from cold by the delivery boys, boat loaders etc etc. Trust me, I know

Run it in hard, warm it through by driving gently then use 75% throttle to take the revs from 2k or so to 5k and let it overrun back down and do it again. repeat a few times then use more throttle and more revs. Dont let the engine labour, do 50-100 miles like that then drop the oil, replace with decent stuff and thrash it.