For enhanced safety, the front seat shoulder belts of the Ford Mustang Mach-E are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The MINI SE Countryman doesn’t offer height-adjustable seat belts.
Both the Mustang Mach-E and SE Countryman 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 SE Countryman’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 Mustang Mach-E are reminded to check the back seat if they opened the rear door before starting out. The SE Countryman doesn’t offer a back seat reminder.
The Insurance Institute for Highway Safety tests front crash prevention systems. With a score of 6 points, IIHS rates the Automatic Emergency Braking in the Mustang Mach-E as “Superior.” The SE Countryman scores only 3 points and is rated only “Advanced.”
Over 200 people are killed each year when backed over by motor vehicles. The Mustang Mach-E has a standard Reverse Brake Assist that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The SE Countryman doesn’t offer backup collision prevention brakes.
The Mustang Mach-E has a standard 360-Degree Camera to allow the driver to see objects all around the vehicle on a screen. The SE Countryman only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The Mustang Mach-E’s blind spot warning system uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The SE Countryman doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing out of a parking space safer, the Mustang Mach-E’s standard Cross Traffic Alert uses sensors in the rear to alert the driver to vehicles approaching from the side and Cross Traffic Braking automatically engages the brakes to help avoid a collision. The SE Countryman doesn’t offer a rear cross-path warning system.
Both the Mustang Mach-E and the SE Countryman have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, rearview cameras and driver alert monitors.
The Ford Mustang Mach-E weighs 468 to 1036 pounds more than the MINI SE Countryman. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.