Ask Honest John

Most recently answered e10 questions
Could you please advise if E5 would be suitable for my 2011 Vauxhall Corsa 1.4 petrol? I have been using E10 fuel but am getting problems with the engine management light appearing (usually after I've...
I drive a Skoda Fabia 2021, what type of petrol is best to use?
We live in Northern Europe where winters are long and full of snow and the rest of the year is rather rainy as well, so we would like to buy a small 4x4 for our family. We do not want to spend too much,...
We run a 2012 Fabia TSI Estate with a 103bhp petrol engine and we hang on to our cars until they give up the ghost. Could you please tell men what grade of fuel would be best suited to it in the long term?...
I have a 2020 Ford Focus Active X 1.0 EcoBoost 125. Can you advise on the best petrol to use in this car, please - E5 or E10?
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...
The new E10 petrol, that we must now use, do you get less miles per gallon out of it?
I have a 2019 Honda CRV 1.5 AWD with 11,000 miles, full service history and not due a service until May 2022. I had been averaging around 34/33 mpg until recently. My fuel economy has dropped to 28/26...
I am looking to purchase a Vauxhall Corsa 1.4 SE or Energy 2014/2016. Is the mpg suggested in your review regarding E5 or E10 petrol? There are so many conflicting reports on excessive petrol consumption....
There are many reports of E10 petrol affecting the performance and economy of cars. I am looking for a new car next year and want to know if the fuel affects highly rated engines or lower rated engines...
 

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 12% on GAP Insurance

Use HJ21 to save on an ALA policy

See offer