All my trucks are on a v112g, they are often sorned and re-taxed without probs. Have once been questioned by a postmistress as to why my v112g form was 5yrs old and that she didnt want to tax it, I didnt argue although I could have,
just downloaded form again. If its mot exempt it should never need an mot, they dont have facilities to do it thats why many exemptions are in place.