My estate is up for its MOT next month so I carried out a few cursory checks recently. I found that the centre seat belt on the rear seat wouldn't extend from its retracted position. It was so tight against the seat back that it had snapped the plastic trim around the hole the belt is fed, in the top of the seat. It was also beginning to cut through the fabric. I imagine that the belt was snagged in some mechanical part when the rear seats were lowered/raised. I couldn't free it so I ended up cutting it out. My question is would this be a failure on the MOT? I have had a look at the MOT testing procedure and it seems to suggest only fitted belts are examined. But doesn't mention anything about missing belts. I should mention that I have every intention of refitting the belt but as the other two are occupied by child seats, the centre seat is not going to be used for the distant future. I am wondering if I could save myself the hassle for a little while longer. Thanks in advance