1) Is Premio 1.5 cc underpowered?
yes obviously for such a big car but if your just using it to drive short distance ( within city limits) i heard the 1.5 is better on fuel than 1.8
2) Does allion offer more mileage over premio, for 1.5 cc engine?
NO,both of them have the 1NZ-FE 1.5, i'm not sure of this i guess those fancy things such as spoiler and bodykit will have an effect on the fuel
3) What is easier to maintain?
both of them will be the same when it comes to maintainence
Difference
Premio
- more like a luxury car
-no bodykits, no spoiler
- usually comes with a better interior ( most of the cars have wooden panels, beige interior, etc)
Allion
- More like a car made for young people
- bodykits, spoilers and different types of lights are available
- its very hard to find an Allion with beige interior and full wooden interior
correct me if im wrong