A replacement for the G37 sedan, this version will come in either rear-wheel-drive or all-wheel-drive models and compete with cars such as the BMW 3-Series, Mercedes-Benz C-Class and Audi A4. (Infiniti) See more galleries Caption 2014 Infiniti Q50 Infiniti Infiniti's all-new Q50 sedan debuted at the 2013 Detroit Auto Show.