My car stopped running on the Interstate. The mechanic says I need a new engine because the old one has lost compression. Is that likely?

If he checked for compression and it was very low then yes it could need an engine. Did the mechanic mention anything about a bunch of valves being bent or broken by chance? Alex

We can't offer any applicable or beneficial information due to the fact we do not know what the mechanic found out by *hands-on* inspection and testing.