When it comes to filling up your car, supermarkets often claim to have the lowest fuel prices. But are they really the best deal, or is there more to the story? Let’s take a closer look at supermarket fuel compared to branded petrol stations and whether you’re really saving money.
1. Why Are Supermarket Fuel Prices Lower?
Supermarkets like Tesco, Asda, Sainsbury’s, and Morrisons frequently offer lower fuel prices than traditional petrol stations. There are several reasons for this:
- Bulk Buying Power – Supermarkets purchase huge quantities of fuel, allowing them to negotiate lower wholesale prices.
- Low Margins, High Sales – Supermarkets operate on smaller profit margins but sell in high volumes, making up for the lower prices.
- Customer Incentives – Many supermarkets use fuel as a way to attract customers into their stores, hoping you’ll spend more on groceries while you’re there.
2. Is Supermarket Fuel Lower Quality?
One of the biggest concerns drivers have is whether supermarket fuel is inferior to that from branded petrol stations like Shell, BP, or Esso. Here’s what you need to know:
- All UK fuel meets the same standards – Regardless of where you buy it, fuel must meet British and European quality standards.
- Additives Differ – Branded fuel stations often include special additives designed to improve engine performance and efficiency, while supermarket fuels typically contain fewer additives.
- Impact on Your Engine – For most cars, supermarket fuel is perfectly fine. However, if you drive a high-performance vehicle, premium fuels with additional cleaning agents may offer long-term benefits.
3. Do You Actually Save Money?
While supermarket fuel prices are often lower, the actual savings may not be as significant as they seem when considering:
- Fuel Efficiency – Some drivers claim they get fewer miles per gallon with supermarket fuel compared to branded options, meaning you may fill up more often.
- Loyalty & Rewards – Branded petrol stations often have loyalty schemes like Shell Go+ or BPme Rewards, which can give you cashback, discounts, or free fuel over time.
- Special Offers – Some supermarkets offer fuel discounts when you spend a certain amount in-store, making it even cheaper if you’re already shopping there.
4. When Should You Choose Supermarket Fuel?
Supermarket fuel is a great option in the following scenarios:
✅ You want the lowest pump price available.
✅ You drive a standard petrol or diesel car.
✅ You regularly shop at supermarkets offering fuel discounts.
5. When Might Branded Fuel Be Better?
Branded fuel might be worth considering if:
You drive a performance or diesel vehicle that benefits from premium additives.
You’re a frequent motorway driver, as better fuel efficiency can offset the cost.
You take advantage of loyalty schemes and fuel promotions.
Final Verdict: Should You Always Choose Supermarket Fuel?
For most drivers, supermarket fuel provides great value for money and meets all legal standards. However, if you have a high-performance car or want to maximise fuel efficiency, branded fuel with extra additives might be worth the slightly higher price.
Pro Tip: If you’re looking to save on overall driving costs, use Karr to track fuel expenses, parking fees, and congestion charges—all in one place!
