Not a very fair comparison...?

You should compare Altis with the Sunny.
Vios a 1.5L and Sunny a 1.6L
Vios more cheaper than Sunny.
Space wise, Sunny is better of cos. More expensive mah.
Fuel Consumption and pickup wise, Vios is better
Specs wise :
Nissan
Torque : 148
Horsepower: 110
0-100 : 10.2 sec (MT), 11.7 sec (AT)
Vios
Torque: 142
Horsepower: 109
0-100 : 9.8 sec (MT), 11.8 sec (AT)
If want a budget car with good reliability, comparable engine performance, then go for Vios.

If want a car to carry 5 members of ur family everytime, don't have budget constraints, dun mind the high Fuel Consumption, then go for Sunny lor....
