With petrol prices reaching an all-time high it’s important to remember that where you choose to fill up could play a big part in your car’s performance.

Earlier this week the AA said that the price of diesel was at record levels, with the average cost over three pence more than the previous highest recorded price.

To combat this, many people will go to supermarkets to top up their car where fuel is often cheaper.

For instance, in Worcester the current cheapest diesel (144.9p) can be found at Sainsburys in Blackpole.

All unleaded fuel sold in the UK conforms to the same standards, however there are some slight differences that could make opting for a brand-name petrol company the wiser choice.

While supermarket fuel should not be considered below par of branded competitors there is a difference in the performance additives added to the base unleaded fuel.

All fuel has these additives, but the specific formula can differ, meaning the type and quantity of additives is different depending on where you go.

Two additives you should be aware of are detergents and friction modifiers, both of which can help keep your car running smoothly in the long run.

Detergents can prevent and even reverse the build-up of deposits on sensitive engine components.

Friction modifiers meanwhile lubricate the engines combustion chambers, reducing wear.

Super-unleaded fuel has a higher amount of these performance additives however only high-performance, and some imported vehicles will really benefit from this more expensive fuel option.