For enhanced safety, the front seat shoulder belts of the Subaru Solterra 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 BMW i4 doesn’t offer height-adjustable seat belts.
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 Solterra are reminded to check the back seat if they opened the rear door before starting out. The i4 doesn’t offer a back seat reminder.
In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Subaru Solterra achieved a “Good” rating - the highest possible - in forward collision warning and automatic braking systems, outperforming the BMW i4, which scored “Poor” - the lowest rating - in these critical safety features.
To provide maximum traction and stability on all roads, Full-Time Four-Wheel Drive is standard on the Solterra. But it costs extra on the i4.
When descending a steep, off-road slope, the Solterra’s standard Downhill Assist Control allows you to creep down safely. The i4 doesn’t offer Downhill Assist Control.
The Subaru Solterra’s rear backup camera has a standard washer for maintaining a clear view under various conditions. In contrast, the BMW i4 does not offer a rear camera washer, meaning its effectiveness relies on manual cleaning by the user when necessary.
Both the Solterra and i4 have rear cross-traffic warning, but the Solterra has Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The i4’s Cross Traffic Warning doesn’t automatically brake.
Both the Solterra and the i4 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger 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, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.


