Why Does My Fuel Gauge doesn't go all the way to full when I fill it up? the needle always stay 1-2 bar down. think this might be a sending unit/lever or a gauge issue?

 

I'd bet on the sending unit.

 

Sender or maybe just the float itself, dont know if you can get just a float but maybe something from another car will work all it needs to do is be buoyant

I know from other applications the float can and deteriorate start to absorb fuel over time
Or someone bent it messing with it.
Take it out and check it out

 

Before you do anything rash...how does the gauge read as it approaches/hits empty?

 

it actually goes all the way to "E"

 

So does mine, but i still have about 5+ gallons in my tank

I also have money on sending unit

 

yea, I think im in the same boat. I will try bending the float see if that helps. lol

 

I would suspect the float itself, a lot cheaper than the whole thing