See the below link about New Swift Brake issue, maruti not yet taken a step to solve this issue. Open the below link and search for New Swift Brake issue.
https://gearheads.in/showthread.php?10176-Swift-ZXI-Braking-Concern&highlight=swift+brake+issue
Lot of customers are facing this issue. But not steps taken by maruti yet and they are trying to ignore this issue. The vehicle won’t stop in slow speed, great chance to get accidents in City Traffic. If any existing customers have this issue, please post your experience in about blog link.