onboard computer fuel consumption

[a0k]

Hi All,

I have 1991 BMW 5.20i 24 v. There is a mismatch (about %20) between the average fuel consumption shown in the onboard computer and the actual consumption..

In town, my average shown in the computer is about
13 lt/100km, but my actual consumption is about 16 lt/100km. This is I think too much for a 2 lt v6 engine.

So, is there a problem with my onboard computer or with my engine? I tried basic things to reduce fuel consumption (like air filters etc.) this helped a little but %20 mismatch still there.

I would appreciate any comment on this issue

best wishes

a0k

 

[Dave8812]

Hmmm, i'm not sure what to tell you. But if you have a BMW service center or dealership, they can probably figure something out. Ushually if your REAL nice and maybe buy a few parts from a certain place, they will be glad to help you out.