Mercedes-Benz 300 SEL 6.3
…into the W109 series. The 300 SEL 4.5 was only available in the United States, while the 280 SE 3.5 Coupé could also be ordered in Europe. In 1975, the Mercedes-Benz 450 SEL 6.9 was introduced as a 300 SEL 6.3 successor with a larger displacement engine for more power and various modifications to the equipment. The 300 SEL 6.3…