Both the Mustang Mach-E and Tucson Plug-In Hybrid have child safety locks to prevent children from opening the rear doors. The Mustang Mach-E 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 Tucson Plug-In Hybrid’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.
The Ford Mustang Mach-E has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Tucson Plug-In Hybrid doesn’t offer knee airbags.
The Mustang Mach-E has standard Post Collision Braking, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Tucson Plug-In Hybrid doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
Both the Mustang Mach-E and the Tucson Plug-In Hybrid have standard driver and passenger frontal airbags, front and rear side-impact 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, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and driver alert monitors.
Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Ford Mustang Mach-E is safer than the Tucson Plug-In Hybrid:
|   
  | 
     Mustang Mach-E  | 
     Tucson Plug-In Hybrid  | 
  
|   Overall Evaluation  | 
     GOOD  | 
     GOOD  | 
  
|   
  | 
     Driver Injury Measures  | 
  |
|   Head/Neck  | 
     GOOD  | 
     GOOD  | 
  
|   Head Injury Criterion  | 
     115  | 
     121  | 
  
|   Torso  | 
     ACCEPTABLE  | 
     ACCEPTABLE  | 
  
|   Pelvis  | 
     GOOD  | 
     GOOD  | 
  
|   Head Protection  | 
     GOOD  | 
     GOOD  | 
  
|   
  | 
     Passenger Injury Measures  | 
  |
|   Head/Neck  | 
     GOOD  | 
     GOOD  | 
  
|   Head Injury Criterion  | 
     42  | 
     116  | 
  
|   Torso  | 
     GOOD  | 
     ACCEPTABLE  | 
  
|   Shoulder Deflection  | 
     .87 in  | 
     1.1 in  | 
  
|   Torso Max Deflection  | 
     .94 in  | 
     1.38 in  | 
  
|   Torso Deflection Rate  | 
     4 MPH  | 
     5 MPH  | 
  
|   Pelvis  | 
     GOOD  | 
     GOOD  | 
  
|   Pelvis Force  | 
     535 lbs.  | 
     669 lbs.  | 
  
|   Head Protection  | 
     GOOD  | 
     GOOD  | 
  

