Two problems related to seat broken have been reported for the 2012 Ford Focus. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Ford Focus based on all problems reported for the 2012 Focus.
As I was going around a corner to enter the freeway something broke in the seat back and there isn't much support any longer.
On 10/23/2015 at 51,289 miles, I took the car in because the car intermitterly would not start & when taking off from 1st to 2nd gear, it was jerky. I would have to let off the gas. I also experienced a rubbing & scraping sound that I found out is what they said was the transmission clutch shuddering. The clutch & tcm (transmission control module) were replaced under the Ford technical service bulletins tsb15-0120 & TSB-15-0121. On 10/12/2016 at 71,906 miles, I took the car back into the same local Ford dealer for shuddering again. They replaced the clutch again & reprogrammed the pcm/tcm & preformed an adaptive learn procedure. I still experience a grinding sound mainly while turning, but have been assured that it is normal & not an issue. My most recent issue is my airbag light came on stationary (no flashing). I currently have less than 80,000 mile on the car. I took it into my local Ford dealer & the car gave code dtc b00c2-11-ocsm (right front seatbelt retractor assembly shorted). It will cost over $700 to replace!!! I was told if I am in an accident where the airbags need to deploy, they will not deploy. . . . . . None of them! less important problems I've experienced is the manual lumbar in the driver seat broke & the "beauty ring" around the headlight switch cracked. Ford does not sell just that piece. You have to buy the whole cover that also goes around the air vent right above it even though they are separate pieces clipped together, which is $45.