30-day price drop: $459
The Lexus HS 250h just never made much sense. It's not as though there is much wrong with it. It promises to offer a pure hybrid powertrain coupled with Lexus quality and luxurious materials, and it does what it promises. But somehow it just never quite added up. It gets just 35 mpg in the city and 34 on the highway -- not great numbers for a car from the company that brought you the Prius. And you don't get a better driving experience in exchange for the less-impressive gas mileage. It's nice enough, but maybe not nice enough to justify the premium over a top-of-the-line Prius. That may be why it isn't selling well, and cracks the list of the five vehicles that suffered the most severe price drops last month.