Does your wash do the undercarriage?

Yes it does it's a very good car watch

Only a medium pressure spray underneath. If used weekly its sufficient, but monthly it wouldnt be enough.

Good day The car wash does spray the under carriage, however, it is more for cleaning light dirt and road grime, if you are looking to have mass amounts of mud cleaned off, like if you went off road mudding, it is not designed for that amount of under carrage cleaning.

Yes they wash everything, great wash for a great price