nope its definatley petrol, or atleast thats what i have been filling it up with for the last year lol. all the books say its 138 and thats what it was sold to me as. something about citroen having 138 surplus stock at the end of the line / end of 05, these cars where then sold as 'job lots' to dealers and it turn sold at lower prices than the 142 cars. as mentioned it is a 06 plate car and i always have problems getting insurance quotes etc, as the insurance companies only recognise 142 for 06>