> don't want the unreliability of a German luxury car or a Tesla
became
> don't want the unreliability of a German luxury car, or a Tesla
since the addition of the article "a" seemed to change the meaning. had it been
> don't want the unreliability of a German luxury car or Tesla
it would have conveyed even different meaning to me.
I'm kind of curious what the GP's post actually meant at this point.