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Lads,
I have noticed my petrol costs going up and my MPG going down. My question - what can be done to improve the MPG mechanically? Just the usual filters/fluids etc or are there other things that improve the efficiency when changed?
No smart arse MPG posts!!!!
Cheers
Service it new plugs alone usually give 2 mpg ,higher tyre pressure helps too
Remember its winter mpg goes down my own is the same im lucky if I see 100 miles to 30 euro at the moment
Hows the battery and coolant system looking (thermostat)? What does the car indicate (from the hidden OBC menu) after idle and warm versus crawling in traffic (again warmed up) versus driving at 80-100km/h when warmed up?
If I reset the MPG on the motorway it will show up to 45/50MPG then as I'm off the motorway it's going down and in stop start traffic it's very poorQuote:
Originally Posted by ciars
What mileage is on her Ger?
Forget the OBC MPG - access the hidden menu in the OBC and post up the temps for the various scenarios I posted up. Here's the DIY on accessing that menu: http://www.bmwhaus.ie/forum/showthread.php?tid=46Quote:
Originally Posted by GerH
At least then we can rule in or out, the cooling system.
Well less than a year ago I changed the expansion tank. It just hit 160k on the clock Rob.
I'll try the hidden OBC features tomorrow
Any difference in exhaust output worth mentioning? Rough idle? Rough run? Lets know the temps tomorrow for a start Ger!
What kinda figures you getting ger the other halfs is reading 25/26 mpg at the moment all city, best thing to do would be run it too reserves then throw in petrol record how many litres you put in and reset the trip counter then when it hits reserves work it out from there
Any of your calipers sticking by any chance? Check for hot brakes after a journey.
I thought my car was getting bad on juice for a week or two until the symptoms got worse and I discovered a seized rear caliper.
Going to give it a service within the next week or 2 and hope that does something before I start investigating further. Picking up:
Sparks
Oil, Air, Cabin & fuel Filters
Oil
See if that does the trick...
Don't forgot tyre pressure. That could be a factor also
Hi Ger,
Is the car getting up to proper running temperature? Is it taking excessively longer to warm up than normal? Could be the thermo if the across is the case.
Hope this helps,
Check your lamda and your afm