BERLIN (Reuters) -BMW is investing 650 million euros ($711 million) to convert its main plant in Munich to exclusively produce EVs from the end of 2027, the carmaker said on Wednesday, a major stepping stone in the transition to the electric age. Unlike other carmakers, BMW has not set its own target for ending production of combustion engine cars, but is coming up against European Union regulation which effectively bans the sale of new petrol and diesel cars in the bloc from 2035. All-electric vehicles made up 15% of the Munich-based carmaker's sales in 2023, a ratio it expects to rise to a third by 2026.