Ask Honest John

Most recently answered fuel prices questions
As an alternative to Supermarket Diesel whilst attempting to keep fuels costs down, will I get some benefits from alternating Shell V Power with Shell FuelSave, should I stick with FuelSave as one fuel...
I have a Jeep Wrangler with tipronic. If I take my foot off the accelerator while in 4/5 th gear tiptronic and "coast" does the car "save fuel" as with a manual transmission? (ie zero fuel to the engine...
I just filled the car up at Morrisons: an eye-watering £80. The attendant explained that it’s gone up three times this week alone. Yet again less money in our pocket and a bigger tax take for our self-serving...
When you insert the nozzle and fill the tank, the pump doesn't automatically stop it just fills the tank and then floods the forecourt with petrol. What could be the cause of this? This is my girlfriend's...
I know you are not in favour of supermarket fuel, so I decided to check it out against my normal fuel which is Shell regular diesel. I drive a Nissan Pathfinder and for my test I drove from Cheshire...
You have always recommended Shell V Power petrol and I have run my high mileage BMW 535iMSport on it for three years and my wife's C-Max 1800cc similarly with absolutely no problems. Now a new BP station...
Could you explain why the cost of diesel fuel is up to 8p per litre more than petrol? As diesel is a lower fraction of the crude oil from which it is made than petrol, it needs less processing and as it...
I buy most of my diesel at a Shell garage on the A30 here in Cornwall. Last week the petrol price fell to 130.9p, whilst the diesel price is 140.9p. What is going on?
Can you explain why the concept of supply and demand in terms of diesel and petrol prices is turned on its head in continental Europe, where the price of petrol exceeds that of diesel? The situation seems...
The government has deceived us, again. The recent public relations coup of helping hard-pressed families etc by postponing the fuel duty rise is really disingenuous. It's all about saving money and it...
 

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