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Forum Fuel and economy Hi there I have just bought a Toyota Aqua 2017 hybrid and was then advised that I should use 95 octane petrol rather than 91. Could you provide the d cons of using 91 octane rather than 95 or is likely to damage the engine if I use octane 91 petrol? r

By kerrytina | AA Member | 3 Posts | 29 September 2020 at 12:45pm

Hi there

By Cade | AA Expert | 3937 Posts | 29 September 2020 at 1:48pm

Hi there,
Our Redbook spec information shows to use 91 octane fuel for the Aqua.
It might be best to speak with Toyota and see what they recommend. Generally if a vehicle requires 95 or 98 octane fuel and 91 is used, reduced performance and fuel economy can result and in some cases engine damage can occur.