Ask Honest John

Most recently answered fuel economy questions
If I put auto climate control on 99% of the time will I use more petrol than if I turned it off ? To assist you I drive a Ford Mondeo Ghia X Manual gearbox (year 2002) an average of 40miles per hour...
I have a 407 SE 2.0 2004 model, petrol, low milage (56,500). Great car for what I paid. I have had a problem with the fuel consumption since I purchased the car about 2 years ago. Fuel consumption seems...
What small car will not disappoint me when it replaces my seven year old Fiat 500 Lounge Automatic? Economic petrol consumption a must.
I need to buy a car to get me to work and back. I travel around 20,000 miles (mainly on the motorway) a year so fuel economy is important and I also have to give clients a lift occasionally so want something...
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...
The fuel economy with my Nissan Qashqai has worsened significantly since the car’s three year service. Car has done 19000 miles in three years and the service included fitting Platinum Spark Plugs, otherwise...
I drive a lot for work, often on motorways, clocking up 20,000 miles a year. I currently drive a petrol Honda Jazz, but want something similar with improved fuel efficiency. What do you suggest with a...
I am looking to buy a 2010 Honda Civic 2.2 diesel. It has covered 34,000 miles and the dealer wants £10,695. Is this a good deal? What sort of mpg should I expect?
Does using the 'HOLD' switch on the Subaru Forester's auto gearbox reduce fuel consumption? And is there any downside to using it other than reduced acceleration?
My mother has owned a 2010 Volkswagen Golf Plus 1.6 TDI from new and has been very pleased with the car. However, a few weeks ago, she noticed a sudden drop in fuel efficiency (the car was doing around...