This is a common criticism of the Ford petrol ecoboost engine. I am now using 99 RON fuel and am getting in the mid forties MPG once the engine reaches working temperature. On long journeys I have seen 55mpg on the computer but that requires a VERY gentle foot on the gas pedal and coasting down hills in gear. Do not exceed 65 mph. . It hasn't deterred me though because I love the engine characteristics.
I purchased a secondhand BMax in August 2020 after parting with my beloved Sante Fe which was no longer practical to keep after the death of my disabled husband in June , I love the B Max but Iím not finding the fuel consumption that good , itís diesel and at the minute itís showing that Iím getting 26 mpg that surely canít be right ? Iíve just done a 300 mile round trip so it should be more economical than that ? Normally it only does short journeys but I was expecting much better performance! Or do I need to reset this ? If so how do I do it ? If itís a true representation I was getting better mileage from my 2.5 ltr Sante fe !