Premium fuel often claims to offer better performance and engine protection — but is it really worth the higher price at UK petrol stations? Let’s break down when premium fuel is beneficial and when it’s unnecessary.
What Is Premium Fuel?
Premium petrol (usually labelled as “super unleaded” in the UK) has a higher octane rating than regular petrol. While regular unleaded is typically 95 RON, premium fuel ranges from 97 to 99 RON.
When Premium Fuel Makes Sense:
- High-Performance Vehicles: If your car’s manufacturer specifically recommends or requires high-octane fuel, using regular petrol can reduce efficiency and cause knocking.
- Turbocharged or High-Compression Engines: These engines may benefit from the cleaner burn and enhanced knock resistance of premium fuels.
- Long-Term Engine Health: Some premium fuels include detergents that can help keep injectors and valves cleaner over time.
When You Can Skip It:
- Everyday Cars: Most standard vehicles in the UK are designed to run perfectly well on 95 RON fuel.
- No Noticeable Difference: In many cases, drivers won’t see a meaningful improvement in performance or MPG when switching to premium.
Does It Save Money?
Unless your vehicle specifically benefits from high-octane fuel, the increased cost is unlikely to be justified by minor fuel economy gains.
Diesel Drivers:
Premium diesel fuels exist too, promising smoother performance and reduced emissions. Again, the benefit depends on your vehicle type and usage habits.
Conclusion:
Check your owner’s manual. If it recommends premium, use it. If it merely says “premium recommended” but allows regular, you can choose based on your driving needs and budget. For most UK motorists, premium fuel is an optional upgrade — not a necessity.