Ask Honest John

Honest John Ask Honest John » Fuel economy
What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks

Fuel economy

Why have the MPG figures only been questioned for diesel engines? Are the figures for petrol engines correct?

Asked on 29 April 2016 by LBW

Answered by Honest John
You are making an entirely wrong assumption. It isn't diesel mpg that is currently being questioned; it's NOx emissions. MPG of both petrol and diesel cars has been questioned for years. The most reliable fuel economy figures for any recent car that has sold reasonably well can be found at: www.honestjohn.co.uk/realmpg
Tags: buying

Our honest used car pricing is a little bit different to all the others. You can get to our values through make or model - you don’t have to follow a prescribed route. Plus, it’s live, which means we can react to changes in the market quicker than any printed price guide.

Honest Used Car Prices

From which small car to buy at which price point to the best UK-built cars, our Top 10s have the lot. Click now for your shortlist.

Unsure of what to buy? Our Top 10s are here to help you....
Dear Honest John,

Please help me choose my next car. I would like it to have:
    Select a few terms below
Similar questions
I'm looking at buying a Ford Fiesta, between 2016 - 2019 plate. Are there still issues with the EcoBoost engines?
I'm looking at a second hand 2018/9 Fiesta 1.0 EcoBoost and mentioned it to my servicing garage. Both mechanics took a sharp intake of breath and warned me off. I know there was an issue with hoses in...
I currently have a 2014 Skoda Yeti. I bought it mainly because of my wife's arthritis as she couldn't get into my SAAB 9-3 easily. The Yeti is very easy to get in and out of for somebody with painful knees. I've...