7. Mercedes R-Class
Mercedes wanted to cash in on the short-lived crossover craze, so in 2006, the R-Class debuted. It was a full-size luxury crossover with a somewhat controversial van styling. However, it featured all the characteristic design elements as well as the engines ranging from six-cylinder all the way to the powerful AMG V8.
However, the R-Class never really hit the mark because it was too strange for the average Mercedes buyer. Yet, it was too expensive for the average crossover customer. Undoubtedly luxurious and comfortable, the R-Class disappeared in 2013. Many Mercedes fans still miss the stupidly fast R63 AMG version.