The auto drivers of Bangalore City, who kept off the road, have more than one grouse against the Transport Department. The drivers seem to be unaware of the prevailing prices of the government approved LPG retrofit engines (LPG kit) and are apprehensive that the existing refuel stations will not suffice the requirements of 60,000 autos in the City. According to a notification issued by the Transport Department on January 15, there are 24 approved LPG kit manufacturing companies and that the owners of the autos should mandatorily fit the approved kits.