Supermarket fuel v branded fuel - which is best?

I have a question for you about what is the best, most suitable fuel (petrol) to put in my recently bought 2019 Kadjar S Edition 1.3 TCe 140 EDC with 21K on the clock. I only use my car for social journeys,...

Is supermarket fuel poor quality?

Is supermarket fuel quality being compromised due to the large mark up they are being allowed to charge? My 25k mile Audi Q7 engine light came on recently and turned out it was a Nox sensor failure, Strange...

What octane petrol should I use in my JCW MINI?

What octane petrol should I use in my John Cooper Works MINI? The handbook recommends Super Plus, with 98 RON. One of the leading supermarkets sell a 97 RON, which is significantly cheaper than the 98...

Can I put E10 fuel in my Golf R?

My Volkswagen Golf R is recommended to run on super unleaded 98 RON which is now super expensive. I know the performance and mpg might drop slightly if I use 95 RON E10 fuel but will it damage the engine...

Does supermarket fuel have 'lower capability' additives?

I have been advised that petrol additives are actually added during fuel station delivery. Non-branded stations, such as supermarkets, receive fewer or or lower capability additives which is partly why...

If I start using premium fuel after 80k miles, will there be a release of carbon deposits and would this damage the engine?

My Avensis has done 82,000 trouble-free miles on supermarket petrol. If I now start using Shell high octane fuel, will I get a sudden release of carbon deposits and would this damage the engine? I have...

Is premium fuel actually worth the extra over supermarket fuel?

In a national newspaper recently they made a statement saying that branded petrol is no better than fuel bought at supermarkets. I know that you are an advocate of good grade fuel and as such, I have been...

Is the diesel fuel that I buy in a supermarket any different from Shell or BP?

Is the diesel fuel that I can buy in a supermarket filling station really any different that the diesel that I can buy from a Shell or BP garage?

Is Shell fuel really that much better than supermarket fuel?

I've always used Shell V Plus diesel in my Range Rover TDV8, with 160,000 miles on it. My neighbour said it was a waste of money, so I switched to Asda diesel. My car now has worse fuel economy and runs...