A tad small for your family of four (or have you tested it already). Otherwise a fine car, particularly for driving in the city. The hybrid power train with regenerative braking is gentle on brake pads and having it leads to less wear and tear on the car in general. But will the savings justify the higher price? Or is your intention to cause less air pollution in the city?
For people who drive in the city a lot, the optimal solution might be to buy an electric car and hire a car for the infrequent long trips on the highway. I think there are spreadsheets to be found online where you can insert the relevant parameters and let the spreadsheet calculate the total cost of ownership for you in each case.
Didn't test it yet, but it may be a bit too tiny. In a matter of fact, last week when my car was at brake repairs, I got a rental Citroen C3 Picasso Edition for spare, and while it's tiny too, it is very comfortable to drive. I wonder if C4 is worth checking out.
The entire compact car segment has evolved into nothing like it was 20 years ago in terms of comfort. A friend of mine bought a year 2009 model Audi A6 Allroad 3.0 TwinTurbo from Germany. A very nice car that suits his purpose well. He likes touring and using the car as a base in remote areas during his hiking trips. When he bought it last year, it cost him no more than about 20,000 to 25,000 euros. But when it was new, its price was around 100,000 to 120,000 euros. While he was searching for a suitable car, he rented a late model Ford Fiesta. My friend told be the Fiesta such a pleasure to drive that he began to wonder about the justification of dropping six figures on a car.