Ask Honest John

Most recently answered fuel economy questions
I have an MG HS and since I purchased I have had a issue with the miles in tank reporting incorrectly. e.g. I can do a motorway journey with the car showing 300 miles in the tank travel 195.5 miles and...
A couple of months ago my Honda Jazz was doing just over 70 mpg. Then suddenly it went down to 52mpg. I asked at my local garage and they showed me how to have AC turned off. It’s improved a little but...
Like your reader last weekl I acquired (on a lease) a new Hyundai Tuscon Hybrid in January 2025. I have done 6500 miles (varied driving) and have kept a spreadsheet of my MPG and brim the tank each time...
I purchased a brand new Hyundai Tucson Ultimate and I am generally happy with all the toys. But two big disappointments to me are the fuel economy and very hard ride. I did take a test drive and thought...
I do about 100 to 120 miles per week combination of motorway and city. Should I buy a petrol or a diesel car?
I am looking to buy a small petrol car which has a big range. I have family who live in Currie, Edinburgh, approximately 400 miles away from where I live. I am looking for a small car that can do this...
I have a 1.6 Hyundai Tucson with 39K on the clock. Although there's no apparent fault and it returns 39mpg do I need to get it decarbonized?
Which PHEV gives decent petrol consumption when running on engine alone ie long journey?
What's the best luxury car to buy with highest mpg and is the most fuel efficient and of course reliable because all the Lexus seem to be very expensive for me to insure?
My Kia Sportage MHEV seems to be doing 15% less mpg since the weather turned colder, with the battery power cutting in less regularly despite saying it’s well charged. Is this a fault with my car or something...