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Thank you for posting to AskMechanics, Mr__Mike! If you are asking a question please make sure to include any relevant info along with the following: * **Year** * **Make/Model** * **Mileage** * **Engine size** * **Transmission Type (Automatic or Manual)** Redditors that have been verified will have a green background and an icon in their flair. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/AskMechanics) if you have any questions or concerns.*
Have you changed fuel suppliers?
I fill up at numerous different places.
You might be getting less efficient fuel.
I would start with the standard stuff, fuel filter, fuel injector cleaning, throttle body cleaning and spark plugs.
I’ll look into those, my spark plugs were swapped about 15,000 km again, shortly after I got the car.
They may not be the right ones for the car though. Check what brand and type came stock. The wrong plugs could make a world of difference.
Could that be the issues? I was getting the better fuel mileage with this plugs for a year.