Renault Twingo 2 ECO ? Urgently looking for help :-/

Hello, my girlfriend bought a twingo at the end of the week 70 ps build year 2012. the car takes in the stand gas, at the beginning also. but then comes the really shitty. is that because of the eco ? can you measure this somehow, so the car attracts decently ? before she had a fox with 50 ps, which went contrary to the twingo really to matter. would be happy if someone could help me, because I have to listen to myself constantly complaining now. although she bought the car, and not me. I told you from the beginning buy you a fox again….