I have the same issue with my 59 plate V70. I’ve not started investigating yet but am only showing in the system an average of 28mpg. I was concerned as I had a non polestar remap for about a year before having it removed as I feared it could have been responsible but the mpg remains poor. In addition the auto box is now very rough when switching between gears, I can only describe it as between cogs it is sustaining the revs but then occasionally really thumps in to the next gear. I’m contemplating a go on a vida diagnostic but can’t afford if ( probably due to how much fuel I’m having to buy!) for a month or two.
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