mp0i

I recently took a little trip from So. Cal to Park City, Utah and back. Somewhere along the way when I was bored I took a shot of the mileage. The ML did fine on the trip with the exception of one bothersome event. I was driving along and suddenly the fuel gauge went from half tank down to empty, instantaneously. It was quite strange. After a while it started creeping up to 1/8th of a tank and then the low fuel light came on. I knew I had half a tank yet the instrument went dead. After I convinced myself the gauge had a hiccup, I eventually stopped and filled up and the gauge went back to normal. Not quite sure what happened, I was wondering if the sudden elevation changes had anything to do with it. Anyway, just thought I'd share as I get lots of useful information off this board

ml320bt

Just happened to me last week. I have 28kmiles on an 09 ML 320 bluetec. On vacation when it reached 1/2 full it suddenly fell to empty. Stopped and filled up and not a problem since. I am guessing a faulty sensor. If you hear anything definite let me know! Bill

jon2002

That is some fantastic mpg you're getting with your ML. Nearly double the MPG i get with my 550..no joke

mp0i

I thought that if I mentioned the mysterious fuel gauge issue someone else might have experienced it as well. Thanks for letting me know. Next time I take it in for maintenance or service I will have them check the computer to see if any codes were thrown. I don't think it warrants a separate trip as it seems to working OK now. As far as mileage goes, in the 23K miles that is on the vehicle the overall average is about 23.5 mpg. This particular mileage run was all highway averaging 67 mph as indicated.

GregW / Oregon

Don't wait too long to take it in. Codes are cleared if they don't recurr with each restart. Within a couple weeks it will be gone from the system if it is there.

boiler1991

Happened to me once three weeks after I bought it new two years ago. After a fill up everything seemed fine. Hasn't happened since.