Yaris or A-Class

Hello, since I expect to have a new family, I would like to get a used car. In my narrow circle now the Yaris and the A-Class made it. Both cars have 4/5 doors, are BJ.99, about 70- 80 tkm, and should cost about 500€ The Yaris is the 1000 ccm and the A-Class is the 160 version. To which car would you advise me, can someone tell me how high the maintenance of the Yaris is ?? insurance, consumption,. …. Disadvantages / advantages Many Dan k Schmiddi