Drivers paid nearly £1 billion more for fuel at supermarkets last year due to increased margins, an investigation has found. The Competition and Markets Authority (CMA) said average supermarket fuel margins rose by 6p per litre between 2019 and 2022.

Drivers paid nearly £1 billion more for fuel at supermarkets last year due to increased margins, an investigation has found. The Competition and Markets Authority (CMA) said average supermarket fuel margins rose by 6p per litre between 2019 and 2022.