2023 BMW M340i — costs that mattered more than fuel economy

I'd keep this practical. Verify the cheap/easy branch on the 2023 BMW M340i before a big repair or a big spend. I'd do that before spending real money. This is from a 2023 BMW M340i in Detroit with 20,000 miles. Verbal 'we'll take care of it' is not a plan. Doing the boring step first on purpose.

Write down what you already tried. A second data point from another 2023 BMW M340i owner helps more than a generic diagnosis. That's where I'd start. This is from a 2023 BMW M340i in Detroit with 20,000 miles. If they can't show the line item, I assume it's hiding. This is the version I'd tell a friend.