hello i used to own a 308 2016 1.6 diesel 120 hp manual. best car i ever owned it used to do 43 mpg urban(it was advertised that i would do 65 urban) and 55mpg on the motorway(it was advertised it would do 78 extra urban)

that being said, i want to buy a second hand 308 2.0 gti 150 hp automatic. but i want the car to be at least as efficient as my old one, what do you think shall i go for this one or do you have any other advice