21. Mercedes 300 SEL 6.3
Back in the late ’60s, Mercedes took a big leap forward by introducing the 300 SEL 6.3 version of their luxury sedan W109. This was arguably the first power sedan for the company, as the mighty 6.3-liter V8 engine with 250 HP and 434 lb-ft of torque sat under the hood.
From the outside, the formal Mercedes sedan looked ordinary apart from the twin tailpipes. However, when you hit the accelerator pedal, you could leave a Porsche 911 in the dust. They designed this Benz for cruising the Autobahn at speeds of around 140 mph.