Both the Lyriq and EQB have child safety locks to prevent children from opening the rear doors. The Lyriq has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The EQB’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Lyriq are reminded to check the back seat if they opened the rear door before starting out. The EQB doesn’t offer a back seat reminder.
The Cadillac Lyriq has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The EQB doesn’t offer a front passenger side knee airbag.
The Lyriq’s standard pretensioning seatbelts also sense rear collisions and remove slack from the front seatbelts to help protect the occupants from whiplash and other injuries. The EQB doesn’t offer a whiplash protection system.
Over 200 people are killed each year when backed over by motor vehicles. The Lyriq has standard Reverse Automatic Braking that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The EQB doesn’t offer automatic braking for stationary objects directly to the rear.
The Lyriq’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the EQB.
Both the Lyriq and the EQB have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras and rear cross-path warning.
The Cadillac Lyriq weighs 892 to 1341 pounds more than the Mercedes EQB. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.