low MPG

[ant_wales]

My 1.2 16v clio used to do about 43mpg in the warmer months and now does around 39mpg but i drive it the same, am i looking at a problem or will the colder weather affect it atall??

thanks

 

[davep24]

its the cold, your car will take longer to warm up so it is using more fuel

 

[edde]

Also you will find that since the air is colder and more dense the ECU can inject more fuel to burn, so you get more power hence mpg can be lower.