Bnew 1.5 Avanza AT or 2nd hand kia carens

we are planning to buy a small 7 seater for my wife.
850- 900t budget cash.

ano po kaya mas ok sa 2, bnew 1.5 g avanza AT (850T) or 2nd hand kia carens (2012 model- 800T)

my wife will drive it, kaya she wants small lang sana pero 7 seater. 5 persons lang naman kami, for emergency daw ok na yung may extra seat.

consideratios are:

fuel efficient, easy maintenance.

any other suggestions that fits my budget?

thank you