Vauxhall Grandland Forums

There is no easy answer to your question. I may have added 18 Litres to the tank on 2nd June 2021.
That means 25 Litres of old fuel was diluted by 18 Litres of new fuel to fill the 43 Litre tank.
The “Fuel too old” message occurred on 1st September 2021 and denied use of electric drive.
We are not alone when it comes to ‘old fuel’
https://www.theglobeandmail.com/drive/m ... in-hybrid/
https://www.volvocars.com/en-th/support ... uel/petrol

Here is a little update regarding driving in the hybrid mode with the full battery charge and a full tank.
At the end of December, I had a ride from Belgium to Amsterdam, which was approximately 140km.
At the end of the ride, I noticed, that I spent less than 1/8 of the fuel tank and of course 100% of the available battery capacity. My consumption was 3.5l/100. The speed on average was 70km/h on the highway due to heavy traffic that day.
Also, noticed, that during this cold season - it is much more efficient to drive in the hybrid mode, than pure electric, even if the electric range allows it to do.