Maruti Suzuki Zen Estilo VXi — engine

Address:

Ahmedabad, Gujarat

i had purchase the new zen estilo vxi in last 2years the main probleam in my car when car gear is nutral and runing in idale speed engine rpm is automatically up down and car is vibreating when i was going to maruti authorise service station(kataria auto mobile) telling the probleam they say allways k serise engine designe probllem and probleam as it is running they are not took any action for complaine i have still suffering this probleam