The BMW 3 Series 2023 and the Infiniti Q50 2023 have many similarities, but some differences may make one a better option for you. The BMW 3 Series has an updated engine that is more efficient and powerful than the Infiniti's, as well as a more luxurious interior. On the other hand, the Infiniti Q50 has a lower price tag and a longer list of standard features. Ultimately, it comes down to your personal preferences and budget.