MPG slump.........

[Jamesl172]

Since i have had my car (18 months) it has always averaged around 30mpg.....I have been driving it no differently of late and the last couple of weeks have been around 25mpg......

could something be causing this to worry about....apart from my driving:rasp:

 

[Poopensharten]

Nope, cold weather will reduce fuel economy in the winter months

Petrol expands in hotter conditions, this and maybe give your car a service?

 

[Jamesl172]

Nope, cold weather will reduce fuel economy in the winter months

Petrol expands in hotter conditions, this and maybe give your car a service?

just had its 36k service which is why I was a bit surprised.........

 

[Poopensharten]

Id still say she will be fine, although if your getting a consistent 25mpg (in all driving id be a little worried)

What are you running her on?

Id fill her to the brim and go as easy as you can to see what the full tank produces?

 

[Jamesl172]

Id still say she will be fine, although if your getting a consistent 25mpg (in all driving id be a little worried)

What are you running her on?

Id fill her to the brim and go as easy as you can to see what the full tank produces?

tesco super unleaded or shell v-power........

£20 gets me 90odd miles at the moment!!

 

[gaz1912]

mine is doing the same, cold weather, i was getting 280 miles to a full tank now struggle to get 260.

 

[mark123]

I've never noticed any difference in the cold and I've had mine 4 years. I get 36-38 on the computer which works out as 33-35 in reality, and I don't spare the horses either. My driving is most "extra urban" I suppose. I've also never noticed a significant difference with the >95 RON fuels either.

Could be lambda sensor for a sudden MPG drop, plus all the obvious stuff.

 

[mark123]

And surely with the lambda sensor constantly adjusting the mixture the fuel/air temperature shouldn't be an issue because the lambda sensor will say add more/less fuel depending on the oxygen present in the exhaust gasses?

 

[Henry]

short journeys won't help whilst it's cold either

 

[Jamesl172]

short journeys won't help whilst it's cold either

that might be it - have noticed it since i started my new job which is a short journey away......who knows - cheers for all the replies everyone