The Insurance Institute for Highway Safety tested the tiny Smartfortwo for crash safety.
[The Smartfortwo] earned the top rating of good for front and side crash protection. Its seat/head restraints earned the second highest rating of acceptable for protection against whiplash in rear impacts.
Larger cars are always safer than smaller cars
But among the smallest cars, the engineers of the Smart did their homework and designed a high level of safety into a very small package.