49. BMW 4 Series Convertible 420d Sport

With a price tag of £44,535, the BMW 4 Series Convertible 420d Sport had a price drop of £13,475, retaining only £31,060 of its value. An overall 30.3% plummet in value.

The BMW 4 Series is a comfortable and well-equipped convertible. You could be fooled at first glance. BMW chose to go with a metal roof over a cloth one. Great for keeping it quiet and reducing noise, bad for weight. The car has less than 3-star reviews online, and even though the car may look cool, there’s a lot more to consider.