Ask Honest John

Most recently answered fuel prices questions
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...
MU of Newbury Park could have answered his own question had he looked at the price of fuel while he was in the USA. When we were in Colorado last September unleaded petrol was $4.59 a gallon. That equates...
You gave the correct explanation to PW of Leicester regarding the price of diesel. To expand on it, the fraction of the barrel that the diesel comes from has nothing to do with the price. As you wrote,...
In these parts, diesel is now 9p or 10p a litre more than petrol. How on earth can this differential be justified? Surely at these prices it is only worth having diesel for very high mileage vehicles?
Can you tell me if diesel engines use more fuel in winter?
 

Ask Honest John

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 10% on GAP Insurance

Use HJ10 to save on an ALA policy

See offer