The Adler Standard 6, which entered volume production in 1927, had a 2540 cc or 2916 cc six-cylinder engine, while the Adler Standard 8 which appeared a year later use a 3887 cc eight-cylinder engine. The Standard 6, first seen in public at the Berlin Motor Show in October 1926 was the first Continental European car to use hydraulic brakes (the Triumph 13/35 offered them in the UK in 1924 and Duesenberg offered them in the US in 1921), when it was fitted with an ATE-Lockheed system. 1927 to 1929 Clärenore Stinnes was the first to circumnavigate the world by car, in an Adler Standard 6.[2]