Actual MPG v Trip computer

[Woody100]

Been getting about 32mpg according to the trip computer on the car and I wanted to see how accurate it actually was, so I filled up clocked up 190 miles over the week and then filled up again. Managed to get 36 litres in so my calculations of 190 miles used 8 gallons which ends up with a average MPG of 24 !!!

I have been booting it around since fitting the new exhaust as I'm addicted to the noise it generates and I guess 24 SPG ( Smiles Per Gallon) is a true figure

While 24 isn't great it's bloody god dam fun !!!

Happy new year to you all.


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[bessieblue]

Hi Woody was it a sports exhaust you fitted ,is this whats affecting the mileage ?. I dont think mines giving much better, but then i do hold the revs more

 

[Woody100]

I'm not sure the exhaust has much to do with it Pete to be honest other than me keep putting my foot down to hear that growl from it !!

I reckon if I keep foot off the gas pedal then I might get mid 30's but that's not as much fun !

Just wondered why the trip computer was a fair bit out to the actual SMG ?

 

[GazHyde]

Putting an induction kit and Eisenmann back box made no difference to the amount of fuel my 2.0 used - unless I was booting it

I find that my 2.2 is about 3 or so MPG optimistic.

Most of the cars I've owned have been wildly optimistic when worked out 'real world'. The best was the 3.0i Z4 which was usually around +/- 1mpg against real world. The worst was my MINI Cooper Diesel which could be anywhere up to about +/- 8mpg out.

 

[Brian H]

If you find your mpg trip computer is not quite right you can adjust it to return the correct figures. I will try and look out the adjustment method, failing that there was a write up in the BMWCCGB mag recently by Mike Fishwick about the procedure.

Happy new year BTW

 

[Woody100]

If you find your mpg trip computer is not quite right you can adjust it to return the correct figures. I will try and look out the adjustment method, failing that there was a write up in the BMWCCGB mag recently by Mike Fishwick about the procedure.

Happy new year BTW

Well I've filled it back up and going to drive like a Nun for the next couple of days and see how accurate it is at low speeds !

Oh I love science !


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[Woody100]

Bit confused with this old MPG malarky !!! Filled the car back up and drove like 96 yr old nun on a school run and still only managed a return of 25mpg !!

So the moral of this story is drive how you want whenever you want where you want and I'm going to get an average of 24mpg. I can live with that !!

Just glad I don't have to use the car for work !