MPG Conversion

AshD93 · 5 Mar 2014 at 14:58

Can someone just confirm this is right for me as my numbers are a bit odd?

VCDS logged my Audi's Speed (km/h) and Consumption (l/h).

To convert this into MPG I did...

Speed (km/h) / Consumption (l/h) = (km/l)

(km/l) * (1KM in Miles = 0.621371192)/(1 Liter in Gallon = 0.219969) = m/g or MPG

Or have I made a silly mistake (which is normal for me).

Thanks in advance.

Ash

MORE SPEED · 5 Mar 2014 at 15:23

Isn't consumption normally in l/100km?

GravyMonster · 5 Mar 2014 at 15:35

You need to use distance, not speed to get a consumption figure, so your calculations are moot anyway.

touch · 5 Mar 2014 at 15:47

Spunkey said:
You need to use distance, not speed to get a consumption figure, so your calculations are moot anyway.

His consumption looks to be measured in litres per hour, so speed should be the correct figure to use.

Dogbreath · 5 Mar 2014 at 15:52

Spunkey said:
You need to use distance, not speed to get a consumption figure, so your calculations are moot anyway.

He has speed (distance per unit time) and consumption (volume per unit time) which is all you need to be able to calculate an instantaneous fuel consumption in mpg (or even averaged if he integrates all the measurements).

The calculations look fine to me.

AshD93 · 5 Mar 2014 at 16:10

Sorry, I should have added I am after instantaneous and not average.

I'll go through my sheets again.

Thanks everyone!

touch · 5 Mar 2014 at 16:16

Are you getting incorrect values?

Do you have some sample data to post?

Sasso · 5 Mar 2014 at 16:18

or an open googledoc so we can all jump in and write rude words.... I mean help?