The simple answer is yes, it is safe to leave your luggage in the car in Menorca. However, there are a few things that you should keep in mind if you intend to do this.
So, there you have it - it is indeed safe to leave your luggage in the car while you travel. Just make sure that your car is locked and parked in a well-lit area, and let someone know that you're doing this , so they can keep an eye on your belongings for you. Happy safe travel to Menorca!