i need some opinions coming from you guys,

Retain our 04 pajero fm with 121,000kms on odometer or sell it and buy a brand new elantra either 1.6 mt or 1.8 at gls

concern:
1. Maintenance? which is cheaper in the long run?
2.Fuel Consumption : fm namin ang average is 7km/per liter either city or long drive
3. will use the car for 85% city 15% long drive
4.