[BMWbiker]

First, a nitpick: my understanding is that CPO cars have at least 6K miles on the odometer.

Moving on to the main part of your question.

Re tariffs: if you buy a new 2025 off the lot right now, you won’t have to worry about tariffs.

As for which to buy: take both for test drives. Compare the features, especially ones that you find desirable. Take into account substantial changes, such as telematics: iDrive 7 with 4G, vs. iDrive 9 with 5G but fewer physical buttons.

Also take into account that the 2025 is a first model year, vs. that the 2024 is the last model year. Most of the bugs were ironed out with the 2024. New bugs are inevitably found in any first model year car.

If you buy any X3 between about a 2020 and 2023, make sure that no feature that you want was deleted during COVID.

If you want a full-fat M, look for a used or CPO one. I know of one FS at a dealer (unless it’s been sold). I doubt that there are any leftovers, but you never know.

I’ll give one solid piece of advice: take a long test drive of any G01 X3 that is equipped with ventilated seats. Many owners find them hard and uncomfortable (I did), plus the side bolsters are not adjustable. This is not applicable to the 2025.

Happy shopping!