State-run Indian Oil Corporation is the country's largest fuel retailerAn SMS-based service provided by state-run Indian Oil Corporation (IOC) enables users to receive information on latest fuel prices on their mobile.

Petrol and diesel rates in the country are reviewed from time to time based on movement in global oil prices and the rupee-dollar currency exchange rate, and vary from state to state due to factors such as value added tax (VAT).

The user is required to send an SMS to 9224992249 in the following format, according to the state-run refiner's website - iocl.com: RSP<space>petrol pump dealer codeCitySMS TextAgartalaRSP 159850AizwalRSP 160181AmbalaRSP 102049BangaloreRSP 118219BhopalRSP 169398BhubhaneswarRSP 124305ChandigarhRSP 102790ChennaiRSP 133593DamanRSP 177747DehradunRSP 161143FaridabadRSP 102287GandhinagarRSP 218671GangtokRSP 159289GhaziabadRSP 154410GurgaonRSP 102082GuwahatiRSP 159571HyderabadRSP 134483ImphalRSP 159875ItanagarRSP 160647JaipurRSP 123143JammuRSP 108726JullunderRSP 108743KohimaRSP 160154KolkataRSP 119941LucknowRSP 155054MumbaiRSP 108412New DelhiRSP 102072NoidaRSP 155444PanjimRSP 125676PatnaRSP 166873PondicherryRSP 135299Port BlairRSP 220191RaipurRSP 169751RanchiRSP 166751ShillongRSP 159828ShimlaRSP 109295SilvasaRSP 112114SrinagarRSP 109536TrivandrumRSP 124923VijayawadaRSP 127611VisakhapatnamRSP 127290(Source: iocl.com)After the user sends the SMS, the Indian Oil facility responds by sending the desired information in an SMS subsequently. (: Petrol, Diesel Rates Unchanged In Metros On Saturday)