Not only that but safety assists systems are directly related to Adult Safety score. WTF!?At launch, that Panda scored 4 Stars - the highest rating for a city car that year (Official Fiat Panda 2011 safety rating results (at https://www.euroncap.com/en/results/fiat/panda/10970 )). The safety equipment has been improved since then, but what you're seeing is the effect of EuroNCAP completely changing its testing and scoring system since 2011. The car is as safe in a collision today as it was at launch.
I don't think that newer cars in the class are so much safer than Panda as a difference between five and zero stars would suggest, just that those cars were designed with the post-2015 test program in mind. The score is also based on lowest-available specification, and this hurts carmakers like FIAT who sell lower-priced models. Compare the 500 and Panda's scores to see just how much this matters: structurally, Panda and 500 are the same car, but last year, a re-test of the 500 scored 3 stars. The difference was that, in 2016, 500 had a refresh that made some safety equipment standard across the range; something Panda didn't get.
I'm unhappy that driver aids (e.g., autonomous braking), cabin labelling and driver instructions contribute to the headline score on what is at heart, supposed to be a crash-safety test. I'd prefer to see automated systems, or the presence/absence of seatbelt indicators, scored separately to the core crash-safety. All the Lane-Departure-Warnings in the world won't help you if you're struck head-on by a car that veered into your lane, and Autonomous braking does not function at the speed used in the impact tests (nor does it have any bearing on side or pole impacts).