Too simple for the money, difficult installation, do not fit...
Works for now, but air connections seems not a heavy quality to hold air for a long term, but hope to be wrong... The installation was a total pain in Mazda 5 2012 at least, inclusive releasing the struts, because the air bags are biggers than the internal wide of the springs, causing to force the air bags fitment in a twisted complicated way... Sorry, but I would recommend to look for another more specialized solution for the Mazda 5 2012 weak rear suspension.
Hyundai Santa Fe
Installed air bag suspension kit to adjust and control ride while pulling enclosed motorcycle/camper trailer. Installing first bag took over two hours as I made every mistake possible. Second side took about 25 minutes to install.Rode with 30 psi on the first trip pulling about 2000 lbs. Worked extremely well, extremely pleased ! I dropped air pressure to about 8 psi when not pulling and the ride is excellent.