Ford Owners Club - Ford Forums Messages

Club Announcements

Ford Fair 2016: Tickets and stand passes are now available to purchase. More info here.

Review your Ford: Help others when it comes to buying a car like yours and review your Ford now

AdBlock Warning

Parts of this website do not function properly with AdBlock enabled on your device. To get the best user experience on our website, please disable Adblock for this website (domain) on your browser.


Mark Williams

Increased Mpg Makes No Difference?

6 posts in this topic

I have a 54 Mondeo TDCI. I have had for a while my mpg about 57-58 and am getting about 620-650 miles out of the tank.

However, my mpg is now up to 59.4 and I'm getting about 580 miles - same journeys, same style of driving but quite a big difference. Anyone know why?

Share this post


Link to post
Share on other sites
 

Are you working your mpg from the dash display or manual calculations?

Share this post


Link to post
Share on other sites

The dash display is more a rough guide than an actual result, if you want accurate readings you need the number of miles, the number of fuels and a calculator.

However, given the time of year, although the MPG may appear higher, the cold will affect the efficiency, but as well as that, the road conditions affect the resistance.

If the MPG is as high as it looks, then the engine is driving efficiently, however, if the roads you are driving on have increased resistance, all that benefit is lost as your moving the car, so then you get more MPG and less miles.

Check your tyres, tracking, air pressure as a start point, make sure they are at an optimum and then monitor from there.Also do the MPG calculations manually and compare to what you see on the dash. The Dash can read differently also as the dense cold air can fool the car into thinking its using less air, so it injects less fuel to compensate, thus the car sees its going further using less juice when in fact it isnt.

stevegtuk likes this

Share this post


Link to post
Share on other sites

I find the MPG drops quite a lot when the weather is cold. I get about 53MPG in summer, down to 47 in winter.

But yeah, pretty much ignore the trip computer. I'm pretty sure it just pulls numbers out of a magic hat.

Share this post


Link to post
Share on other sites

As above, do manual calculations rather than relying on dash.

Alot of mondeo drivers have found their mpg can be out by as much as 10-12mpg on the dash compared to manual calculations.

Usually the mpg goes down in cold weather, so your going up is a little strange, it would be nice if it has though :)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now