The Mercedes-Benz CLK550 Convertible was the hardtop variant of the W209 CLK550 that was introduced for the 2007 model year. The CLK 550 Convertible was powered by Mercedes' M273 E55 engine, which was a 5.5L V8 engine that generated 382hp. This power was sent to the rear wheels via a 5 speed automatic transmission. Production of the Mercedes-Benz CLK550 ended in 2009, although a few examples are known to have been sold in 2010. It is common to find CLK 550's mislabeled as CLK 500's, although production of the CLK500 ended in 2006.