Hello

So I have recently purchased a Mk5 pd105 with the bxe on 194k miles. I have only had it a week

I have a question on the fuel gauge, how accurate is it and is it normal for the gauge to deplete quickly after the half a tank mark.
The car came with just under half a tank.

From the first picture to the second picture is 60 miles, mixed driving mainly A roads. I average between 38 - 45 mpg each journey to work.

This is my first diesel and I'm not sure if this is normal behaviour of the gauge. My last car was a petrol Vauxhall zafira and that would deplete quicker in the second half but not this much.