What petrol gives the best MPG?
Do you know of any research comparing the mpg obtainable from different fuel brands?
My local fuel garage has changed to a lesser-known brand and I feel I am getting fewer miles out of a tank full. My daughter has changed from supermarket fuel to a well-known brand and seems to be getting better mpg.
My local fuel garage has changed to a lesser-known brand and I feel I am getting fewer miles out of a tank full. My daughter has changed from supermarket fuel to a well-known brand and seems to be getting better mpg.
Asked on 7 November 2022 by David Popkin
Answered by
Lawrence Allan
We're not aware of any specific research regarding different brands of fuel and MPG. All petrol and diesel must meet a specific minimum legal standard, and typically the standard E10 unleaded all comes from the same refineries regardless of brand. Different refining processes and additives are used depending on brand, though. The difficulty with calculating MPG using different brands of fuel is the huge number of variables that can affect the result - temperature, the efficiency of the pump itself, how exact your driving is per tank, etc.
Real MPG enables you to register the fuel economy you are actually getting against your make and model of car, its engine and type of transmission.
Every time you enter an average consumption figure against your car, the overall average automatically adjusts to reflect it.
Our Fuel Cost Calculator shows you which will be the best choice for you.
Compare the running costs of petrol, diesel and electric cars to make the right choice for you.
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