List of historical prices changes in Chennai city is given below, compared to other metros oil prices are cheaper in delhi and chennai because of the less VAT.
| YEAR | DATE | NO.OF DAYS SINCE LAST CHANGE | PETROL PRICE Rs./Ltr |
|---|---|---|---|
| 2015 | August-15-2015 | 14 | 63.49 |
| 2015 | August-01-2015 | 16 | 64.77 |
| 2015 | July-16-2015 | 15 | 67.29 |
| 2015 | July-01-2015 | 15 | 69.84 |
| 2015 | June-16-2015 | 31 | 70.12 |
| 2015 | May-16-2015 | 15 | 69.45 |
| 2015 | May-01-2015 | 15 | 66.08 |
| 2015 | April-16-2015 | 14 | 61.9 |
| 2015 | April-02-2015 | 32 | 62.75 |
| 2015 | March-01-2015 | 13 | 63.31 |
| 2015 | February-16-2015 | 12 | 59.85 |
| 2015 | February-04-2015 | 18 | 58.88 |
| 2015 | January-17-2015 | 1 | 61.38 |
| 2015 | January-16-2015 | 31 | 63.94 |
| 2014 | December-16-2014 | 15 | 63.94 |
| 2014 | December-01-2014 | 30 | 66.05 |
| 2014 | November-01-2014 | 17 | 67.01 |
| 2014 | October-15-2014 | 14 | 69.59 |
| 2014 | October-01-2014 | 31 | 70.87 |
| 2014 | August-31-2014 | 16 | 71.55 |
| 2014 | August-15-2014 | 14 | 73.47 |
| 2014 | August-01-2014 | 31 | 75.78 |
| 2014 | July-01-2014 | 6 | 76.93 |
| 2014 | June-25-2014 | 18 | 74.76 |
| 2014 | June-07-2014 | 52 | 74.71 |
| 2014 | April-16-2014 | 15 | 74.6 |
| 2014 | April-01-2014 | 31 | 75.49 |
| 2014 | March-01-2014 | 55 | 76.48 |
| 2014 | January-05-2014 | 1 | 75.71 |
| 2014 | January-04-2014 | 14 | 75.68 |
| 2013 | December-21-2013 | 50 | 74.71 |
| 2013 | November-01-2013 | 31 | 74.22 |
| 2013 | October-01-2013 | 17 | 75.68 |
| 2013 | September-14-2013 | 13 | 79.55 |
| 2013 | September-01-2013 | 31 | 77.48 |
| 2013 | August-01-2013 | 17 | 74.49 |
| 2013 | July-15-2013 | 14 | 73.6 |
| 2013 | July-01-2013 | 2 | 71.65 |
| 2013 | June-29-2013 | 13 | 71.71 |
| 2013 | June-16-2013 | 15 | 69.39 |
| 2013 | June-01-2013 | 9 | 66.85 |
| 2013 | May-23-2013 | 22 | 65.9 |
| 2013 | May-01-2013 | 15 | 65.9 |
| 2013 | April-16-2013 | 14 | 69.08 |
| 2013 | April-02-2013 | 1 | 70.34 |
| 2013 | April-01-2013 | 16 | 71.42 |
| 2013 | March-16-2013 | 14 | 71.41 |
| 2013 | March-02-2013 | 14 | 73.95 |
| 2013 | February-16-2013 | 29 | 72.17 |
| 2013 | January-18-2013 | 2 | 70.26 |
| 2013 | January-16-2013 | 15 | 70.58 |
| 2013 | January-01-2013 | 46 | 70.58 |
| 2012 | November-16-2012 | 20 | 70.57 |
| 2012 | October-27-2012 | 18 | 71.77 |
| 2012 | October-09-2012 | 69 | 71.48 |
| 2012 | August-01-2012 | 7 | 72.19 |
| 2012 | July-25-2012 | 1 | 72.19 |
| 2012 | July-24-2012 | 25 | 73.16 |
| 2012 | June-29-2012 | 11 | 72.27 |
| 2012 | June-18-2012 | 15 | 75.4 |
| 2012 | June-03-2012 | 10 | 75.4 |
| 2012 | May-24-2012 | 175 | 77.53 |
| 2011 | December-01-2011 | 15 | 69.55 |
| 2011 | November-16-2011 | 12 | 70.38 |
| 2011 | November-04-2011 | 49 | 72.73 |
| 2011 | September-16-2011 | 77 | 70.82 |
| 2011 | July-01-2011 | 47 | 67.5 |
| 2011 | May-15-2011 | 74 | 67.22 |
| 2011 | March-02-2011 | 45 | 61.93 |
| 2011 | January-16-2011 | 31 | 63.36 |
| 2010 | December-16-2010 | 37 | 60.65 |
| 2010 | November-09-2010 | 7 | 57.44 |
| 2010 | November-02-2010 | 16 | 57.09 |
| 2010 | October-17-2010 | 26 | 57.09 |
| 2010 | September-21-2010 | 13 | 56.31 |
| 2010 | September-08-2010 | 74 | 56.02 |
| 2010 | June-26-2010 | 86 | 55.92 |
| 2010 | April-01-2010 | 33 | 52.13 |
| 2010 | February-27-2010 | 240 | 51.59 |
| 2009 | July-02-2009 | 154 | 48.58 |
| 2009 | January-29-2009 | 54 | 44.24 |
| 2008 | December-06-2008 | 30 | 49.66 |
| 2008 | November-06-2008 | 113 | 55.07 |
| 2008 | July-16-2008 | 40 | 55.07 |
| 2008 | June-06-2008 | 13 | 55.07 |
| 2008 | May-24-2008 | 99 | 49.64 |
| 2008 | February-15-2008 | 254 | 49.61 |
| 2007 | June-06-2007 | 21 | 47.44 |
| 2007 | May-16-2007 | 76 | 47.44 |
| 2007 | March-01-2007 | 13 | 47.48 |
| 2007 | February-16-2007 | 78 | 47.51 |
| 2006 | November-30-2006 | 163 | 49.67 |
| 2006 | June-20-2006 | 15 | 51.83 |
| 2006 | June-05-2006 | 272 | 51.83 |
| 2005 | September-06-2005 | 78 | 47.49 |
| 2005 | June-20-2005 | 76 | 44.26 |
| 2005 | April-05-2005 | 4 | 41.25 |
| 2005 | April-01-2005 | 137 | 41.25 |
| 2004 | November-15-2004 | 11 | 41.25 |
| 2004 | November-04-2004 | 96 | 42.51 |
| 2004 | July-31-2004 | 46 | 40.15 |
| 2004 | June-15-2004 | 167 | 38.96 |
| 2003 | December-31-2003 | 19 | 36.79 |
| 2003 | December-12-2003 | 57 | 35.71 |
| 2003 | October-16-2003 | 46 | 34.36 |
| 2003 | August-31-2003 | 91 | 35.39 |
| 2003 | June-01-2003 | 16 | 33.11 |
| 2003 | May-16-2003 | 20 | 33.22 |
| 2003 | April-26-2003 | 10 | 34.4 |
| 2003 | April-16-2003 | 15 | 35.48 |
| 2003 | April-01-2003 | 16 | 36.39 |
| 2003 | March-16-2003 | 15 | 36.39 |
| 2003 | March-01-2003 | 28 | 34.89 |
| 2003 | February-01-2003 | 16 | 33.99 |
| 2003 | January-16-2003 | 13 | 32.99 |
| 2003 | January-03-2003 | 33 | 32.55 |
| 2002 | December-01-2002 | 15 | 31.45 |
| 2002 | November-16-2002 | 15 | 32.05 |
| 2002 | November-01-2002 | 15 | 32.8 |
| 2002 | October-17-2002 | 16 | 32.07 |
| 2002 | October-01-2002 | 15 | 32.42 |
| 2002 | September-16-2002 | 15 | 32.16 |
| 2002 | September-01-2002 | 16 | 31.66 |
| 2002 | August-16-2002 | 15 | 31.44 |
| 2002 | August-01-2002 | 31 | 31.64 |
| 2002 | July-01-2002 | 15 | 31.64 |
| 2002 | June-16-2002 | 12 | 31.3 |
| 2002 | June-04-2002 | 31.05 |
Thanks for the detailed petrol, Diesel oil price list. Keep updating , great job!