[Gedas8640]

Hi guys,

Just got a bit lost for what to look, mine E92 2.5i 218bhp does only 19-20mpg in mixed driving, for me it seems bit to excessive considering that it is a mixed driving and it doesn't go through a lot traffic, so it makes me to believe that something is wrong.

Did had a scan - no errors found.
Checked for vacuum leak haven't found anything obvious.
It does have a electronic disa, tested - working.
Operating temperature 80-85 degrees celsius

Where else i should look is there are something common relating this issue? What i should start to look, or is it normal MPG fo.r this engine?(hope not).
Also noticed that car isn't "pulling" as it should. Drove with identical car to compare mine and the difference was obvious plus mpg was around 30-35.

And yes i did calculated the mpg between fill-ups.

Does anyone has engine live data values (what those suppose to look like) as once i'm looking at the live data it isn't telling me much as i'm not sure what values actully supposte to be there.

Anu suggestions?

Thanks.

[Andystobbs]

Binding brake?

[Gedas8640]

Wheels spinning freely, so should be something else.

Thank you for the guess though

[Andystobbs]

Interesting how your mpg is so down without any obvious symptoms. What did you read the fault codes with?

[Silver Streek]

80 to 85 degs seems too low for a petrol, they usually run hotter than that at 95 to just over 100 degs. This would effect your mpg.

[Gedas8640]

Originally Posted by Andystobbs

Interesting how your mpg is so down without any obvious symptoms. What did you read the fault codes with?

Inpa and carly neither of them showed nothing

[Gedas8640]

Originally Posted by Silver Streek

80 to 85 degs seems too low for a petrol, they usually run hotter than that at 95 to just over 100 degs. This would effect your mpg.

I thought about it as well, i even seen someone posted the ranges o temperature it looked kinda like :

"Well, there are technically 4 temperature maps, but in most cases the engine should be running on Eco mode, so this right.

The four modes are as follows (there is a PDF online that I am referencing here):
• 112°C ECO mode (economy)
• 105°C Normal mode
• 95°C High mode
• 80°C High + mapped thermostat mode "

Suggesting to change termostat? I read that car kind a controls it on running conditions itself or is it only a BS as i haven't noticed any changes depending on my driving style?

[Silver Streek]

If you have been monitoring the temp through mixed driving and it's been sitting between 80 and 85 then if it were mine the first thing I would do is change the stat or stats if it has 2 like the diesels do.

At least then you can eliminate minute the thermostat possibility.

[Gedas8640]

Originally Posted by Silver Streek

If you have been monitoring the temp through mixed driving and it's been sitting between 80 and 85 then if it were mine the first thing I would do is change the stat or stats if it has 2 like the diesels do.

At least then you can eliminate minute the thermostat possibility.

Will give a try and will let you know thanks.

[Chappers 71]

I would say around 25mpg would be about what to expect, unless you drive it like your hairs on fire.

There's a thread about 325i fuel consumption, I've posted the link.

https://www.google.com/url?sa=t&sour...Y7JbKGQ03MmEst