  Lorentz symmetry appears as a quite robust feature of the strongly
interacting Dirac materials even though the lattice interactions break such a
symmetry. We here demonstrate that the Lorentz symmetry is restored at the
quantum-critical point (QCP) separating the tilted Dirac semimetal, breaking
this symmetry already at the noninteracting level, from a gapped $s-$wave
superconducting instability. To this end, we employ a one-loop
$\epsilon=(3-D)-$expansion close to the $D=3$ upper critical dimension of the
corresponding Gross-Neveu-Yukawa field theory. In particular, we show that the
tilt parameter is irrelevant and ultimately vanishes at the QCP separating the
two phases. In fact, as we argue here, such a Lorentz symmetry restoration may
be generic for the strongly interacting tilted Dirac semimetals, irrespective
of whether they feature mirror-symmetric or mirror-asymmetric tilting, and is
also insensitive to whether the instability represents an insulator or a gapped
superconductor. The proposed scenario can be tested in the quantum Monte Carlo
simulations of the interacting tilted Dirac fermion lattice models.
