Ask Honest John

Most recently answered fuel economy questions
How much fuel does my air conditioning use and is there any way to test if it's fully working and as cold as it should be?
I own a five-year-old Kia Venga petrol. The best I get from this car is 44mpg. So, with fuel prices increasing, I am looking to swap my car for something that's more efficient or electric. Can you suggest...
Do you have a list of cars of any age that have the best miles per gallon for petrol with auto or manual transmission?
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 drive a 60 mile commute each day and would like a large car to replace my Range Rover Evoque. Can you recommend something that will get me as much MPG as possible please?
I've just bought a 2013 Ford Focus Estate 1.0-litre EcoBoost Titanium. It is giving me about 33mpg, when the advert for urban driving says it should be giving over 47mpg. On the motorway at 70mph it also...
I currently drive 20,000 miles per year with most of my commute being motorway. I want to buy a car that majors on comfort and fuel economy. I have a decent budget but ideally, I want to keep it at the...
I have a 15-plate Honda CR-V 1.6 diesel. I still want a diesel and like the elevated driving position but need something that will deliver mid 50's+ real mpg. The budget is £20k. What would you recommend?
Is there a rule of thumb about how much less efficient a plug-in hybrid is when the battery runs out compared to a combustion engine equivalent? For example, if a conventional petrol or diesel model did...
 

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