That's how it is in Belgium (as long as I can remember). The first MOT is in the 4th year and the second is in the 6th (except with towbar +750kg = every year). Then it's every year at dedicated, super size, high tech MOT centres and not garages.
Dirk
1993 Morgan +4 (Connaught Green) 2009 Mini Cooper D 2024 Mercedes GLC 1994 Ford Motorhome