How will they test that? By making a test drive with one tyre with a faulty pressure? If so, then MOT tester becomes a dangerous profession. (The indirect TPMS of my 500 only works when driving.)
TPMS is mandated on current cars. The MOT test is simple make sure light comes on with ignition and then goes out. it will store faults and not pu light out
Robert G8RPI.