Cosworth is set to return as an engine supplier to Formula 1 when the tweaked engine formula comes into force, which is expected to be in 2021. The Northampton-based company was last involved as an engine supplier in 2013 when it supplied the Marussia outfit – the sole survivor of the three new entrants which joined in 2010, before its own collapse last year under the Manor banner. Cosworth supplied all three at the time; Virgin, HRT and Lotus, as well as Williams, with a 2.4 litre V8 engine, but exited the sport when the current power unit was introduced, partly because of the development costs involved on the hybrid side, but also because it couldn't secure enough customer...
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