You can also check the label on the inside of the car’s fuel-filler flap or the owner’s manual. If your car isn't compatible, you should only use E5. What happens if I put E10 in a non ...

The "unleaded fuel only" label exists because filling a modern car with leaded fuel will damage several components. According to our Mechanical Engineer, nothing catastrophic will happen to the ...

When you shop for a new car, good fuel efficiency should be a must-have. It's easy – all new vehicles have to carry a fuel consumption label. If space for seven is what you need, buying a medium-sized ...

All petrol cars sold in the UK will run on regular 95 RON petrol, but check your car’s handbook or the label inside the fuel filler cap to find out if high-octane fuel is recommended. Which? Limited ...