The smallest car on the lot, the Mercedes-Benz CLA sedan proves that sometimes one can pay too little for things. The 2014 edition of this subcompact luxury sedan gets the lowest marks in most areas of JD Power’s dependability study, with the exception of features/accessories, where it’s just average. Consumer Reports gives the CLA a below-average rating for predicted reliability, ranking it dead last, overall, among entry-level luxury cars and placing on the magazine’s “10 worst” list for 2017.