Porsche will decide by 2015 whether it will discontinue diesel engines , said CEO Oliver Blume . Currently , diesel engines account for about 15 % of the car maker 's global sales . Over the next 10 - 15 years , Porsche will offer a range of combustion engines , plug - in hybrids and battery - only vehicles , Blume said . Battery - only vehicles could account for between 15 - 35 % of sales by 2025 , he added . Last year , German prosecutors investigated whether staff at Porsche were involved in designing software that produced false readings of diesel emissions . Investigators are also examining whether Porsche 's Cayenne sedan was fitted with a " defeat valve " .
Porsche will decide by 2020 whether it will discontinue diesel engines, said CEO Oliver Blume. Currently, diesel cars account for about 15% of the car maker's global sales. Over the next 10-15 years, Porsche will offer a mix of combustion engines, plug-in hybrids and battery-only vehicles, Blume said. Battery-only vehicles could account for between 15-35% of sales by 2025, he added. Last month, German prosecutors investigated whether staff at Porsche were involved in designing software that produced false readings of diesel emissions. Investigators are also examining whether Porsche's Cayenne model was fitted with a "defeat device".