If you read our series on the business of redesigns, you know that reimagining a car from the ground up can be a billion-dollar feat to implement the industry's latest technology, keep up with ever-improving competition and ultimately (hopefully) increase sales. They usually do just that: In Cars.com's analysis of 61 redesigns from 2009 to 2012, sales for the average remake saw an increase of 32.6% in the months following.
Why? Just look at their predecessors. Some undertakings replace a onetime star that lingered well past its freshness date (see the Volkswagen New Beetle), while others are the successor to a product doomed from the get-go (see the Dodge Caliber). Whatever you call it, the most improved overhauls can sometimes create butterflies out of automotive caterpillars. An important note: Sometimes the changes go beyond just interiors and drivetrains, and sometimes the car being replaced was so poor that the automaker gave the new version an all-new name.
The last time we named the most-improved cars, we considered models that showed progress through successive generations in the 2000s. This time, our editors nominated the most improved single redesigns from the past 15 years.