Fuel Consumption

[josh2023]

Cupra Leon 1.5 etsi.

There is a discrepancy between distance travelled and reduction in fuel capacity remaining.

The guage showed 720 km after refuel.

Distance since refuel 190 km.

Guage now shows 500 km.

Should it not show 530 km?

 

[Richiepoos]

Cupra Leon 1.5 etsi.

There is a discrepancy between distance travelled and reduction in fuel capacity remaining.

The guage showed 720 km after refuel.

Distance since refuel 190 km.

Guage now shows 500 km.

Should it not show 530 km?

I think the car takes a guess at how far you'll go on a tank using data from your previous journeys. If you drove like Miss Daisy and took it easy before you filled up it will presume you're going to drive like that again. When you then drive it like you stole it the car then has to make an adjustment.
I find my Octavia is an out and out liar and I rarely achieve the mileage it predicts I will.

 

[Alex667]

It really depends how you drive as it's only an guesstimate of range left. I've started off with 365 miles showing, driven 2 hours on a motorway, and had 400 miles showing left at the end of the journey. The only accurate measure of fuel left is the gauge...

 

[SRGTD]

@josh2023; I hardly ever use the ‘range’ function in my car as the car’s guesstimate of miles remaining is based on previous driving history. I did use it during the fuel shortages a couple of years ago when I had problems getting fuel and needed to use my car, as I found it helped me to alter my driving style and eke a few more miles out of what fuel I had.

As @Alex667 has said, the fuel gauge is probably more accurate. If as the thread title suggests, your primarily interested in your car’s fuel consumption (i.e. mpg or l/100 km used), calculating it manually is likely to be more accurate than the car’s calculations.

 

[josh2023]

thanks