Vehicular Munchausen's by proxy 

When you are sharing your vehicle with someone and it get damaged in someway (door ding, curb check, scratch, totaled) and you blame it on the person you share with, only to find out later that it was your own fault.

Dick: Great, now my wheel is all chewed up because you curb checked. And I know it was you because it wasn't like that last week, and I certainly didn't do that.
Jane: I haven't used the car in the last two weeks, Dick. I've been in the hospital, Dick.
Dick: Yeah, likely story
*LATER*
Dick: Huh, well, I guess I did that when I drove home drunk and ran over that stop sign.
Jane: Yeah, Dick, we call that vehicular Munchausen's by proxy. No one hurt your fucking BMW but you, Dick.

Vehicular Munchausen's by proxy by lil nugget 360 December 6, 2012

Vehicular Munchausen syndrome by proxy 

Vehicular Munchausen syndrome by proxy (VMSP) is an automotive disorder in which an automobile owner repeatedly makes appointments for car trouble (such as strange noises, ignition problems) which then refuse to occur when at the repair shop for diagnosis.

"They brought their Saturn in again for that 'grinding noise.'"
"You can always tell when a couple like that is having troubles — it's totally Vehicular Munchausen syndrome by proxy ."

Vehicular Munchausen syndrome by proxy by Nigel Gannet February 5, 2018