its a very nice car and nowadays its hard to find a car in better condition i own one
and as for your question maintence cost is normal parts are easily available fuel consumption on cng and petrol are good too but it depends on engine condition you will find many car with enigne swap non efi and vtec
a carburetor engine will give some problem but remember once you spend and maintained this car it wont give you much problem all depends on your daily runniung and use