FIAT 500 Recommendation Newbies 1.2 or 1.4

Moin Moin, actually comes from the Audi A4 Forum. My wife is currently driving a polo with a 1.0 engine. Now we would like to buy her a FIAT 500 soon, but can’t agree with us with the engine is the 69hp or the 101hp the better one? We know about the extra power. Your consumption values, would be interesting anyway. The car should be used by my wife to work and she has a distance of about 15Km on the highway. What can you give me about the engines and al Tell me a lot about the FIAT 500? Would I be happy about answers and your experiences. Happy sunny Sunday to all of you.