The first on the list is the Mercedes-Benz SL 600, and it is the 2004 model that causes criticism. For a sports car, the SL 600 was too heavy (over two tons). In addition, maintenance of the Mercedes-Benz SL 600 will cost a penny, and the 12-cylinder engine is not very reliable.
As for the Saturn Sky, built on the same platform as the Pontiac Solstice, the open version is equipped with a 2.0-liter turbo four with 260 horsepower. This model has serious safety problems: there are cases when the airbags and belt pretensioners did not work.