I was advised NEVER to buy a Liana by 2 Suzuki dealership mechanics and many other people. There were mythical engine problems in it which I never saw, just abused cars.
One service advisor at Suzuki Township Motors Lahore said that the engines in Swift and Liana are different which is wrong. The parts guys in dealerships don't know that the engines in Liana, Jimny and Swift are the same. I once had to argue for 20 minutes with the parts department to get Jimny injector o-rings for my Liana as the Liana o-rings were supposedly out of stock. They only agreed when the service manager intervened.
So once again, don't go for rumors.
Visit Liana fan club and do some research. Buy a brand new car and have peace of mind.