  We present a new consistent truncation of $D=11$ supergravity to $D=4$
$\mathcal{N}=2$ minimal gauged supergravity, on the seven-dimensional internal
Riemannian space corresponding to the most general class of $D=11$ solutions
with an AdS$_{4}$ factor and $\mathcal{N}=2$ supersymmetry. A truncation ansatz
is proposed and its consistency checked at the level of the $D=11$ Bianchi
identity, bosonic equations of motion, and supersymmetry variations of the
gravitino. The general class includes an $\mathcal{N}=2$ AdS$_{4}$ solution
dual to the conformal, low-energy physics phase corresponding to a mass
deformation of the M2-brane field theory. A consistent truncation recently
constructed on this particular geometry is recovered from our formalism.
