  It is shown that if a C*-algebra has nuclear dimension $n$ then its Cuntz
semigroup has the property of $n$-comparison. It then follows from results by
Ortega, Perera, and Rordam that $\sigma$-unital C*-algebras of finite nuclear
dimension (and even of nuclear dimension at most $\omega$) are stable if and
only if they have no non-zero unital quotients and no non-zero bounded traces.
