The sportage 4 has speed assistance (ISLA). It’s fine when it works but the satellites that guide it clearly aren’t updated as quickly as speed signs on roads. There are a few roads that are 30’s but display as 40 on the dash and 30’s that display as 20 (presumably due to school zones) when the schools aren’t in or outwith the alloted time for the signal to come on.
I have switched it off and still use physical signs as my guide and the manual speed limiter that halts acceleration. It’s still too new to be reliable ime and my example is within a very small 5 mile-ish radius of my home postcode.