Consumer Reports tests of the tiny Scion iQ found it to be slow, uncomfortable and noisy, among other drawbacks. With a road test score of 29, it joins the ranks of the lowest-scoring cars Consumer Reports has tested in recent years. At only 10 feet long, the new iQ is slightly bigger than the tiny Smart ForTwo, which is also among the lowest-scoring cars Consumer Reports has tested. Unlike the Smart, a token rear seat adds some flexibility, but it is very small and takes up almost all of the iQ’s luggage space when in place. Consumer Reports testers found its choppy ride, noisy cabin, and uncomfortable driving position severely limit its appeal.