Any car from 1992 must have a cat fitted ( does not say where ?? ). If a car fails a bet test the the e missions machine will go through a few menu choices. One of which is the age of the vehicle. If between 1991 and 1998 the. The limits are relaxed slightly on a full cat test so the c.0 is 3.5 or 3. It has been a while so I can't remember the exact figure. The o my failure the. Will be car not fitted. So just bolt it to the side of the centre pipe! He can't say it's not fitted now. Only pass and advise