The Infiniti QX30 joins the growing compact luxury SUV field, already populated by the Audi Q3, BMW X1, and Mercedes-Benz GLA. But Infiniti took a shortcut into the popular segment through an alliance with Mercedes-Benz to use the GLA's running gear, resulting in the QX30. The hitch? The GLA wellspring isn't particularly good, and the QX30 fails to deliver true luxury in exchange for its lofty sticker. Not surprisingly, it doesn't matter whether the car comes with the vaunted three-pointed star from Stuttgart, or Nissan's luxury division Infiniti insignia. Either way, it fails to impress.