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    Fuel economy issues in my 2019 Holden Colorado Z71

    Holden Holden Advice Holden Colorado Holden Colorado Advice Holden Colorado 2019

    Fuel economy in my 2019 Holden Colorado Z71 was 6.4 litres per 100km at the time of purchase, and after every service it has drifted out to almost 10 litres per 100km. I've enquired four times at each service but they have not found anything. What could be wrong?

    Answered by CarsGuide
    22 March 2024
    David Morley

    There could be a complex, electronic, fuel-supply or engine-management reason for this, and if that's the case, having the vehicle scanned would be a good place to start. Or, it could be a case of human behaviour that is skewing your fuel economy figures.

    By which, I mean that when you got the car brand-new, you gave it the kid-gloves treatment, understanding that the brand-new engine needed to be run in and would appreciate a slightly easier start to life. Then, as the novelty wore off and the vehicle began to earn its living, you subconsciously grew a heavier right foot. And it is this that's seen the fuel consumption creep up.

    Failing that, you might have an on-board computer that has been silently recalibrating itself, perhaps in conjunction with software updates at the dealership which you may, or may not have, been made aware by the dealer. To be perfectly honest, I'd find 6.4-litre per 100km average on a Colorado borderline unbelievable, and the sort of economy only a dedicated fuel-saving driver could even get close to. Ten litres per 100km, meanw

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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