How many miles will £20 petrol get me?

Find out how many miles you can get for £20 petrol in 2023! Just enter your vehicle’s MPG and petrol cost per litre into the calculator and you’ll get an estimate of how far you can get for £20 petrol.




Petrol Amount (Litres)


(Estimated Miles)

Don’t know your vehicle’s real MPG? Use this MPG calculator to find out your real miles per gallon consumption.

How this calculator works

This calculator uses your vehicle’s fuel efficiency and the price per litre of petrol to calculate and estimate how many miles you can get from £20 petrol. Here’s how it works:

Step 1: We need to find out how many litres of petrol you will get for £20. This can be done using the formula: 20 ÷ petrol price in pence × 100.

For example, if the cost per litre of petrol is 165p, the formula would be: 20 ÷ 165 × 100 = 12.12 litres.

Step 2: The next step is to estimate how many miles you can get based on your car’s fuel efficiency (MPG). The formula to work this out is: MPG × litres × 0.22.

For example, if your car gets 40 MPG and you got 12.12 litres of petrol from £20, you can use this formula to estimate how many miles you can get: 40 × 12.12 × 0.22 = 106.67 miles.

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