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    Holden Astra 2017: Can I use 91-octane in the RS variant?

    Holden Holden Advice Holden Astra Holden Astra Advice Holden Astra 2017

    The fuel economy of the 2017 Holden Astra RS 1.6 Turbo I recently purchased is not great. Can I use regular unleaded petrol? I was thinking of alternating, using say three full tanks of 91 regular unleaded to one tank of 98 Premium. Any harm in using regular unleaded?

    Answered by CarsGuide
    18 January 2018
    Graham Smith

    It’s recommended that you use 95-octane Premium unleaded in the RS, and that’s what I would use. You could damage the engine using 91.

    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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