No hints of any performance isssues....no starting issues, no hesitation, no misses....just the CEL on.
Don't ask about mileage....I typically don't pay much attention to it so can't give you much help there.
Shop around for the MAF (I was advised to be very careful on ebay).
I think I paid around $245....replaced with a 113 094 00 48 (Bosch 0280217810, same as original on the vehicle)....box received was marked 0280217811 but the part in the box was marked ....810.
www.boschusa.com says ....811
Good luck.