Well I owned Balenos, Lancers, Chevrolet Spark and Joy and Cultus.
The least expensive to maintain and use is Cultus. Then Baleno and Lancer are same. At least in Rawalpindi. Both's parts have almost equal rates.
The most expensive to maintain were Chevrolet cars.
So, either go with Cultus or if you buy any sedan like baleno, liana, lancer... They have almost same part rates. But lancer's feeling is much better than Baleno and Liana. So, at least you'll be getting better feeling and experience along with same level of expenses.
But don't buy any of these cars in bad condition or it will be a nightmare. Buy a good condition car and it will be easy to use and maintain.