In 2012 we bought a 2012 Ford Focus. Owners manual was clear that towing 4-down is OK. Follow the battery disconnect procedure. After a few tows of 300 mi.+ each we found that there was a smell like burning clutch plate. Complained to dealer. They researched for a while and found that we needed a computer upgrade. Did that under warrenty. Next several legs of towing everything seems OK.