On the FM radio, the channel center point and steps between channels is different between the USA and at least most of Europe. Some line up, some don't. It's possible the car might figure this out, but on the several portable, digital tuning radios I have, they have an internal switch to step at and stop at the required intervals. An older, analog tuner would not have any problems, but a digital one could. The station ID info may not be encoded the same, and would be missing.
The headlight patterns are different, but may or may not be a deal breaker. Many of the EU vehicles have a different function on the turn signal to allow marker lights to be used on one side or the other when actually parking that the US vehicle doesn't support. It's fairly simple to switch the miles-Km on the readout as a user option. I'm guessing that the bumpers are the same, but they may not be - EU has different requirements. THey probably allow personal import, but you might not be able to sell the vehicle there. Unless you're in a job that might be exempt, you'd probably have to pay the VAT, which is a pretty significant hit. The duty in the US is about 3%, and sales taxes vary a lot from none to maybe in the 10% range, depending on where you live, but VAT is often closer to 20%, and you wouldn't get credit for the US duty or sales tax already paid.
The tires might not have the proper markings for the EU.
Long time ago, I imported a car to Europe, but I was a contractor for the US military, so was exempt from most of the tax and other issues. Times change. FWIW, at that time, it cost me almost twice as much to ship it back as it did to get the car there (long story, I'd planned to sell it before I left, but the trip got cut short, and I didn't have time).