Best milage , lowest maintenance car

It was my first deam car, I have driven in long root It is best car for driving in hill area zig zag roads I have driven mostly on hils like badrinath , jageshwar uttarakhand And also using to go my home at distance of 800 km 3 to 4 times in a year After 3 years i have not spend a service cost more than 5000 rs And never got break down Best car in same sagment , very low maintinance cost