  It is still a debated issue whether all critical active particles belong to
the same universality class. Here we numerically study the critical behavior of
quorum sensing active particles that represents the archetypal model for
interpreting motility-induced phase separation. Mean-field theory predicts that
this model should undergo a full phase separation if particles slow-down enough
when sensing the presence of their neighbours and that the coexistence line
terminates in a critical point. By performing large-scale numerical simulations
we confirm this scenario, locate the critical point and use finite-size scaling
analysis to show that the static and dynamic critical exponents of this active
system agree with the Ising universality class
