A bit premature to declare so, don't you think? What if it comes out that corners were cut regarding engine maintenance or something along those lines?
“Engine was not maintained well” is so deeply opinionated. The first thing they do is check standards. Was it oiled? Were the parts replaced periodically? Was the fuel type correct?
It could be a mistake. “What kind of engine?” “It needs this type of fuel.” “Oops, no, that was for the older ship. This is a different ship.” “The ship already set sail.” “Nevermind then and keep your mouth shut.”