on an average it consumes a lot of maintenance

we are using ford ikon rocam engine from past 4 years but we are not satisfied with the car.the car consumes lots of fuel.not much powerful engine.moreover its dealers at service station wants to change like every part new unless it is required.the spares is very costly and mostly not available by store.service is very very bad for them.they ask a lots of money.no care at service station for car and customer.customer care bad.bad fuel economy nearly 9kmph.interiors-on the verge of average