Yes - Converting your Car to LPG or Autogas will save you money!
The average price for petrol currently in the UK (August 2014) is 129.82p and the maximum price is 142.9p.
The average price for diesel currently in the UK (August 2014) is 134.16p and the maximum price is 151.9p.
With an LPG Conversion that is a potential saving of up to £2000 a year on your fuel costs!