Should I replace the entire windshield if there is a small crack on the rear windshield glass?

Not necessarily, if the crack is minimal and does not fall into the line of vision of a driver, GoMechanic can assess and advise repair rather than a full replacement. If the crack interferes with safety then full replacement is recommended.
Can I drive right away after having a windshield glass replacement in a BMW X7?

After windshield glass replacement, it is recommended to wait at least for 1 hour before driving the BMW X7, thereby letting the adhesives set properly, thus ensuring that it is a good fit.
What type of adhesive is used in windshield glass replacement by GoMechanic?

High-quality polyurethane adhesives that offer strong bonding with rapid curing are used in windshield glass replacement by GoMechanic to ensure that the windshield stays in perfect position with long-lasting installation.
Do cameras or sensors need assessment for my BMW X7 after windshield glass replacement?

Yes, if the BMW X7 had advanced driver-assistance systems, such as lane departure warnings or collision alerts, cameras and sensors would be recalibrated to ensure proper functionality.