Ive found in the past that most petrol cars prefer the cold weather, something about it which makes them drive and respond better.

This leads me on to the point of this thread....

I am finding that my dci hates the cold my mpg has dropped from around 45 to 35mpg. Im not driving any different and as far as i am aware the car is mechanically sound!

I mentioned this to my old man who has a new diesel vw passat and he said his was exactly the same.

Anyone found this??

Stu

might be the cold or may be the remap but i'm doing 37mpg ;) lol

40 mpg But i've only been doing short journeys so not really enough time to fully heat up, Apparently you can get Summer and Winter Diesel. I haven't seen any though!

The formulation of both diesel and petrol is changed throughout the year by the manufacturers. In winter diesel will have different additives to inhibit freezing and also to make it a bit more volatile so it burns easier. Its not unusual to see reduced mpg when the formulation changes. It'll probably improve once the ECU adapts

thats for that bob, that would explain the reduction in winter!

i noticed the same in my golf as well. its doing around 6-10 MPG less in the cold weather.

against the trend, my mpg has gone up in the past 6-8weeks. now getting about 50-60 extra miles to a tank. nothing about my driving has changed, seems strange as everyone else is getting less, not that im complaining.

You got petrol or diesel tiw75?

If cold = winter, then you will be using more juice for heating (blower & back screen), demisting (aircon), lights, screen/lights wash. None of them that much by themselves but makes a difference when all on at the same time & for a long time.

72 mpg this morning on the way to work not a bad average for 40 something miles

Do you not mean 27mpg?

No Deff 72, My little clio is doing my proud

Sneaky two car driving monkey :)

Ha Ha, it makes up for the nice one doing 19 as its used for weekend fun only.

You got petrol or diesel tiw75?

sorry should have said, it's a diesel 130fap.

Peculiar then how yours has gone up :)

i havent really noticed with my megane (mainly cause i havent checked recently) but i know my dads scenic and the scenic he had b4 got worse when it was colder

you have to remember as well that colder air is denser so the engine will ingest m,ore air, the fuel mix to compensate will be greater-meaning using more fuel.