degrees, to achieve an even firing interval. 75 degrees — 1992-2004 Isuzu V engine used in the Isuzu Rodeo and Isuzu Trooper. These engines were produced in both SOHC and DOHC versions. A 75 degree V6 engine is also used by the 2016–2022 Honda NSX. 80 degrees — 1988 Honda RA168-E engine used in the McLaren MP4/4 Formula One racing car. Use in automobiles In 1906, a few years after 4 cylinder engines and V8 engines had come into existence, the first known V6 engine was built. This V6 engine was a single prototype automotive engine built by Marmon Motor Car Company in the United States. The engine did not reach production. Similarly, a single prototype engine was produced by Buick in 1918. In 1911 Delahaye produced the first 30° 3.2-litre DOHC installed in the Delahaye Type 44 automobile. The Lancia V6 engine was introduced in the 1950 Lancia Aurelia. Lancia had been producing V4 engines for approximately 30 years, and one of the key goals was to reduce the vibrations compared with the V4 engine. The V6 engine used a 60 degree V-angle and six crankpins, resulting in an evenly-spaced firing order to reduce vibrations. Other manufacturers took note and soon other V6 engines were designed. In 1959, the GMC V6 engine was introduced in the form of a 60-degree petrol engine used in pickup trucks and carryalls. The Buick V6 engine was introduced in 1962 and was based on the all-alloy Buick 215 V8, which shared its 90° bank angle, but unlike the Buick V8, used all-cast iron construction. Initially an uneven-firing engine, Buick later redesigned the crankshaft to a "split-pin" configuration to create an "even-firing" version. After it became the 3800 V6 in 1990, the engine gained a reputation as a reliable, powerful, fuel-efficient workhorse that became a mainstay of GM's FWD mid-size and full-size cars. It was discontinued in 2008. Over 25 million units had been built, making it one of the most-produced engines in history, and it was on Ward's 10 Best Engines of the 20th century list. Ford introduced its European road car engines in 1965 with the German division's Cologne V6, and the Ford Essex V6 engine, introduced by Ford's United Kingdom division in 1966; both engines used a 60-degree V-angle. The 1967 Dino 206 GT was Ferrari's first V6 road car, which had a 65-degree V-angle. The 1979-2005 Alfa Romeo V6 engine