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    Subaru Forester 2020 Problems

    Are you having problems with your 2020 Subaru Forester? Let our team of motoring experts keep you up to date with all of the latest 2020 Subaru Forester issues & faults. We have gathered all of the most frequently asked questions and problems relating to the 2020 Subaru Forester in one spot to help you decide if it's a smart buy.

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    Is it worthwhile using premium fuel in an engine that doesn't need it?
    Answered by David Morley · 12 January 2024

    The short answer is no, the extra cost is not justified in a vehicle that does not require premium unleaded. While some premium fuel products do contain detergents to help keep an engine internally clean (which is the basis of the claim you heard) the major difference (and the reason PULP costs more) is to do with the octane rating of the fuel.

    Put simply, engines in a higher state of tune require this higher octane rating to produce their potential and well as avoiding internal damage. Your Subaru, meanwhile, is tuned to be quite happy on standard 91 RON ULP, and filling it with the more expensive premium brew is a waste of money. You might gain a small improvement in performance and/or economy, but not enough to offset the higher per-litre price of PULP, and probably not enough to even notice.

    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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