Ask Honest John

Most recently answered fuel economy questions
I owned a Lexus RX400h, which gave consistent results of 34mpg summer and 33mpg winter. My current Lexus Rx450h (2009 with 70,000 miles) doesn't get much better than 32mpg. It's puzzling as the 400h...
I have a new Mercedes with an 'Eco' button, which cuts out the engine when stationary to save fuel. Surely turning the engine on and off engine wastes more fuel then just idling briefly?
How robust is the PowerShift transmission in a 2.0 Tdci EcoBoost Ford Mondeo? Can I expect it to last 100,000 miles?
I have a 2008 Jaguar XF 2.7 diesel I bought with 50,000 miles on the clock. I am averaging 42mpg. I pride myself on getting every mile from a tankful and arriving on time at my destination.
I strongly disagree with your advice to MB. I recently traded in my Sorento after owning it from new for 12 months. I've got nothing positive to say about it. It drove like a shed and the gearchange on...
I need a new car and I like the Honda Civic and Alfa Romeo Giulietta. I will be doing mainly suburban driving, occasional motorway runs and low mileage - probably 6000/9000 miles a year. Essentials are:-...
Why will no one do an in-depth review on supermarket v/s the big four fuel suppliers? I am a tanker driver (not fuel) and over the years have asked at least six fuel tanker drivers if there is a difference...
I have owned my 2007 KIA Sorento 2.5 XT Auto Diesel estate for over two years and it now has 67,000 on the clock. It has always been serviced by my local KIA dealer and I am only the second owner - the...
I need to change my car, and would like to remain loyal to the Ford Focus. I currently drive between 300 and 400 miles every week, the majority of this is motorway driving. Should I consider a petrol engine...
My present company car is due for renewal later this and I am restricted to a diesel only selection. I currently drive a 2010 SEAT Altea XL with a 1.6TDI 105 5-gear Ecomotiv engine. My next vehicle is...