Actor Naresh Vijaya Krishna, actor Mahesh Babu's stepbrother, criticised E20 fuel, saying it is giving heart attacks to many, including bike users and high-end car users. "My friend (a BJP sympathiser) who bought Toyota Camry recently had to change valves of...engine which cost him 3.5 lakh," the ex-BJP leader said, adding, "If...same happens to my Porsche Panamera...cost would be...12 lakh."