The Maruti Ertiga comes only in the petrol and diesel versions. There is No LPG version of the Ertiga yet. Follow the link provided to see full details and buying options for the Ertiga http://www.cardekho.com/carmodels/Maruti/Maruti_Ertiga
Maruti has announced offers on Wagon R, Alto 800 and K10, but there are no announcements about offers on Ertiga. But, you can expect to get some offers later in the month. For exclusive offers, please visit your nearest Maruti dealer to find out the details.