car straight out of the manufacturing facility: engine already over 80% broken in (and not smoking, pass emissions, cat works fine, etc.). The remaining part can be done with ease for the first couple of hundreds of miles within city's stop-n-go traffic.
Because these engines and cars are mass-produced, there shall always be some odd-ball situation where the engine burns motor oil from day-1, and it's not apparent until a few thousand miles down the road (when it's due for oil change, or whatever reason). These are the kind of problem where, as the owner the vehicle, should promptly take note and if excessive, start dealing with the dealership/manufacturer.
So far, I've owned my fair share of new/used automobiles, with 2 of them being fresh(new, 1st owner) from day-1, which includes my beloved fit (8yrs old now). Did I baby it from day1? Nope... I just drove it in the city during the 1st week of purchase; and went on a road trip to seattle on a relatively steady 70m/hr drive and back...then changed out the oil relatively early and move on with my own OCI regimen.
8 yrs now and never burn a single drop of oil during OCI...
Q.
I've done numerous engine blueprinting/rebuilds in the past with new rings, etc. and no, it doesn't take that long to break-in a fresh new engine (a few miles of careful acceleration/deceleration and then drive normally in the city over the next 60 miles or so).