The Smart ForTwo earns the top rating for front and side impact protection in crash tests by the Insurance Institute for Highway Safety.

NEW YORK (CNNMoney.com) -- The ultra-tiny Smart ForTwo earned top marks in side and front crash tests, the Insurance Institute for Highway Safety said Wednesday. The two-seat car did not earn the Institute's Top Safety Pick designation, however, because it didn't earn top marks for whiplash protection.

But even if the ForTwo improved its whiplash protection, it would not be named a Top Safety Pick, said IIHS spokesman Russ Rader. The institute does not have a specific size requirement, but the ForTwo is simply too small to be considered safe under all conditions, including highway driving, he said


Smart would not comment on the IIHS's decision regarding the car's eligibility to be a Top Safety Pick.

The ForTwo, which is about three feet shorter and 700 pounds lighter than a Mini Cooper, earned the best possible rating of "Good" for front and side impact protection in tests by the IIHS, a private group funded by insurance companies.

The ForTwo received an "Acceptable" rating, which is the second best possible, for whiplash protection in rear impacts. Technically, that would prevent it from getting a "Top Safety Pick" from the IIHS.