  We propose a solution to the recent $W$ mass measurement by embedding the
Standard Model within $E_6$ models. The presence of a new $U(1)$ group shifts
the $W$ boson mass at the tree level and introduces a new gauge boson
$Z^{\prime}$ which has been searched for at collider experiments. In this
article, we identity the parameter space that explains the new $W$ mass
measurement and is consistent with current experimental $Z^{\prime}$ searches.
As $U(1)$ extensions can be accommodated in supersymmetric models, we also
consider the supersymmetric scenario of $E_6$ models, and show that a 125 GeV
Higgs may be easily achieved in such settings.
