mchedlishvili Posted June 11, 2021 Report Share Posted June 11, 2021 My Volvo's XC60 2010, t6, fuel efficiency in city suddenly decreased it now consumes 2-3 liters more than it used to be. However on highway the consumtion stayed the same. Had it checked with computer diagnostics and nothing appered to be wrong. I was told that it could be a thermostat (which still works but not doing its job as it used to be). Has anybody had the similar issue and what could be the reason? Link to comment Share on other sites More sharing options...
Ihatespeedbumps Posted June 11, 2021 Report Share Posted June 11, 2021 I would probably want to start with stage 0 tune up items if you haven't already and see how it goes from there if no codes are stored. Link to comment Share on other sites More sharing options...
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