Motor vehicle comprising a cab body firewall with a lower crossbeam and an upper crossbeam

A motor vehicle comprising:

• a cab comprising a dashboard,
• a windshield forming an upper front part of the cab and having a lower extremity,
• a driver assistance system comprising at least one sensor configured to detect a parameter of an external environment of the vehicle and a control unit configured to process the parameter of the external environment of the vehicle,
• a cab body firewall forming a frame structure of a lower front part of the cab on which the dashboard is attached, the cab body firewall comprising:
• a lower crossbeam holding the windshield by the lower extremity on an upper side of the lower crossbeam, and
• an upper crossbeam holding the at least one sensor, arranged above the upper side of the lower crossbeam and above the lower extremity of the windshield, and covered by the dashboard.