i have just done another check on the directgov website and cross referenced it against wisebuyers data. The data wisebuyers give is as foolows: doblo 2004 petrol 1.2 178 grammes co2 doblo 1.9 jtd elx 2002 168 grammes co2 doblo 1.9 jtd active and dynamic 2004 153 grammes co2 doblo 1.9 jtd family 157 grammes co2 (think family has more weight due 7 seats) thers loads more i could check on different sites ,but it gets a bit boring, hope this helps in some way. regards, geoff.