Guys in getting very poor mpg , my fuel gauge is going down quicker than i expected as welll as my millage range on trip computer .... may i have some help please i dunno what on eartg is causing this but just to note ... ive got a split on one of the engine pipes i been doing some research and i think its a breather pipe but still would this cause low mpg ?

What car, what engine and what sort of journeys?

Rbropesz said:

Guys in getting very poor mpg , my fuel gauge is going down quicker than i expected as welll as my millage range on trip computer .... may i have some help please i dunno what on eartg is causing this but just to note ... ive got a split on one of the engine pipes i been doing some research and i think its a breather pipe but still would this cause low mpg ?

Click to expand...

Hi, and welcome,

we'll need more background..

when was it last serviced?, had any engine lights on.. or trouble starting..??,

Charlie - Oxford

Just bought the car dnt have no service tbh and no engine lights whatsoever, ? I topped up engine oil and i notice 2 tyres that are abit flat aswell as a cracked breather hose but i dnt see why dis would dramatically increase fuel consumption or will it ???????

And its a grande punto 1.2 56 plate petrol engine

Low tyre pressure can make a huge difference for a little 1.2, and a tyre can lose a lot of pressure before you actually see it...

First thing to do is to put some numbers on it. What does your trip computer show as an average? If you don't have one, fill the car to the brim and note the mileage. Drive it for at least 20 miles (50 would be better) and then fill to the brim again, noting how many litres you put in. Subtract the second mileage from the first to give the total number of miles travelled between fillups. divide the number of litres you put in by 4.55 (to give gallons) and then divide the number of miles by the number of gallons to give miles per gallon.

Our '56 plated 1.2 does about 36 to the gallon round town and about 43-44 on a run.