Audi unveiled the first production petrol straight-five, a L SOHC engine, in the 1976 Audi 100. In 1981, the Audi 100 also became available with the smallest production straight-five, a L variant.  Audi used straight-five engines in many of their cars between 1976 and the early 1990s, including the 305 hp Audi Quattro and the Audi RS2 Avant with 315 hp. Audi Inline 5 engine is used extensively in Motorsport, particularly in Rally in the famous Group B with 650 hp Audi S1 Sport Quattro E2 and in IMSA GT Championship with 20V inline 5 720 hp Audi 90 quattro IMSA GTO.     
The past few American presidents have all been driven around in Cadillacs. But British prime ministers get something a little more exciting: A Jaguar. And unlike the president’s car, where even the most simple question will likely be answered with “that’s classified,” we know a good amount about the British state cars. The XJ Sentinel is powered by a 503 horsepower supercharged V8. It weighs over four tons, though most of that comes from the heavy armor plating, state-of-the-art communications systems, and a self-contained oxygen supply system. Zero to 60 takes over nine seconds, and the top speed is a sluggish 121 miles per hour, but when you consider that the Sentinel is basically a light tank in a Jaguar suit, it’s all pretty impressive.