The S4’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The John Cooper Works GP doesn’t offer pre-crash pretensioners.
For enhanced safety, the front seat shoulder belts of the Audi S4 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 John Cooper Works GP doesn’t offer height-adjustable seat belts.
The S4’s standard pretensioning seatbelts also sense rear collisions and remove slack from the seatbelts to help protect the occupants from whiplash and other injuries. The John Cooper Works GP doesn’t offer a whiplash protection system.
The S4 has standard Pre Sense Front, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The John Cooper Works GP doesn't offer collision warning or crash mitigation brakes.
The S4 has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The John Cooper Works GP doesn’t offer all-wheel drive.
The S4’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The John Cooper Works GP doesn’t offer a lane departure warning system.
The S4 Premium Plus/Prestige has a standard Top View Cameras to allow the driver to see objects all around the vehicle on a screen. The John Cooper Works GP only offers a rear monitor.
The S4’s optional 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 John Cooper Works GP 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 S4’s optional rear cross-path warning system uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The John Cooper Works GP doesn’t offer a cross-path warning system.
Both the S4 and the John Cooper Works GP have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, post-collision automatic braking systems, daytime running lights and rearview cameras.
The Audi S4 weighs 992 pounds more than the MINI John Cooper Works GP. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts. Crosswinds also affect lighter cars more.