Speedo

[Hooligan]

Hi

I've been trying to work out mpg for my van and kept a log of miles done, fuel used etc.

Problem is I can't decide if speedo counter is Km or M.!! (Speed is Mph)

I know for a fact that trip to work is 4.2 miles.... but Bongo says 5.1 on speedo. That doesn't work out for miles or Km.

Infact when I worked out fuel economy against a Km reading it's 19.2mpg.

....but against Miles its just under 30. Hmmmm

[Rhod]

Hooligan wrote

when I worked out fuel economy against a Km reading it's 19.2mpg.

....but against Miles its just under 30.

Either of those figures could be right for miles per gallon, depending on what kind of driving you're doing. On longish runs I get 30-32mpg, but if I use the van for commuting - 4 miles each way, then it drops to around 19 mpg.

You probably need to compare figures on longer runs to confirm, but I'd suspect the odometer is running in km - unless you know the speedo has been converted by having a chip added.

[moonshine]

If the speedo has been converted by using a chip, it will read up to 180 mph, but if it has been converted by using a different face it will read up to a lot less (140 mph, I think). If a chip has been used, the odometer will read in miles, but if the face has been changed it will still read in kms.

When I check my mpg, I usually fill up, note the odometer reading, run it until the fuel gauge reads less than a quarter full, then fill up again noting how much it takes. That way gives a good average over a period of time and different driving conditions. I get about 25 mpg on average this way.

[westonwarrior]

a chipped speedo will only have one set of numbers up to 180 m/km.
A new face will have 2 sets showing 110 mph on the outside and 180 km on the inside and will still show the odometer in kms

A speedo out of a mx6 or 626 will show 140 mph and the odometer will be in miles