No CNG variants are being assembled anymore by any Pakistani assembler since govt place the ban last year. They may have Liana's old stock CNG kits. The government has allowed the assemblers to supply till stock lasts. We have very few Corolla Ecotecs that's why. It was the most elaborate CNG set up by any assembler.
You love it or hate it cars which have local support and back up will keep on selling like Suzuki (Mehran-Cultus-Swift-Bolan-Ravi) , Toyota and Honda in Pakistan. Honda has gained its market share in Pakistan because of 3S support network.