Montana car titles must be notarized.
All owners listed on the front of title must sign the title. Make sure to sign before a notary.
If your Montana title shows a lien or a bank name printed on the front, then your title will need to be signed off by the lien holder or have a separate lien release letter.
Title and Registration Bureau Motor Vehicle Division Montana Department of Justice 1003 Buckskin Drive Deer Lodge, MT 59722DMV Website