Uhm, it's not directly comparable - cars have different specs in each country and it's very rare you can spec them 1:1 exactly. As an example - you'd find that the starting price of cars in Poland is much lower than in say, UK, but if you compare the spec the "base" model in Poland is missing a lot of equipment that's just standard in the UK to keep the cost down as much as possible.
I don't know about Poland specifically, but in some cases the missing equipment could be critical safety devices mandated by law. For example, from working with import, I learned that in India vehicles can be sold without airbags, and even some structural safety features (reinforced firewall and front frame rails) are not installed on Indian-market cars (mostly to remove weight, actually, not cost). Also, some markets require special vehicle features (increased required ride height was the reason that the Tesla Model 3 was not sold in India for some time) that consumers from other nations would find unpalatable. And of course, lighting, bumper height, and signalling may be different across markets. Notably, EU and American vehicles have vastly different headlamp requirements.
Sure. In my example I was comparing some cars like the VW Polo and the basic spec Polish car had an extremely basic dot matrix display for the radio while the UK car had a full colour 7 inch display as standard. The polish car didn't have air con at all, while in UK it was standard. The Polish car was missing cruise control, any infotainment buttons on the wheel and it had a non-split rear seating bench - all standard on UK spec. I don't think it had any safety differences at all.
