What petrol should I use in my Audi A1?

I recently purchased a 2017 Audi A1 998 cc from a reputable family garage where the owner has a great reputation for buying and selling to local people. He advised that I should use higher octane petrol to preserve the turbo unit, but I now realise that given the cost of higher octane petrol this could cost me nearly an extra £10 every time I fill up. Is his advice worth taking or can I use ordinary unleaded without worrying.

Asked on 19 June 2025 by Roger Phillips

Answered by David Ross

Unless the vehicle handbook states that the vehicle should be fuelled with 98 octane fuel, using 95 octane fuel will cause no harm to the turbocharger or any other part of the engine. Potentially you will benefit from slightly improved performance and economy on higher octane fuel, but you will not see enough economy benefit to offset the increased cost of the fuel.

Tags: petrol premium fuels turbo engines high octane

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