I put these ones in my
Ateca in 2017. Perfect, still going strong.
Although the Xcellence 2017
Ateca was termed "full LED" not all the bulbs are LED. For the lesser models this increases. The rear indicator lights are of the conventional bulb type, so too the reversing lights and fog lights. Front fog lights were not full LED in the 2016 / 2017 Atecas. Whilst...
www.seatcupra.net
Pass on the bulb fitting. Probably the same. Also Chinese brand them as different names. They changed their brand name but were the same when posters came back so I did some more checking. Its the LED panel count etc that you can hunt down the same bulbs sold under different branding.
Also changed the reversing lights.
Members of the German Atecaforum have been replacing the standard low light reversing bulbs with MHtech 1000 Lumens Extremely Bright LED Backup Reverse Bulbs CANBUS Error Free 921 912 T15 Chipsets W16W High Power 45pcs 4014 LED Bulbs for Backup Reverse Lights, 6000K Xenon White - back in...
www.seatcupra.net
They give a lovely bright white light. Again no issues. Check the pin out and you probably need to check for branding alternatives. Probably that thread were we had to hunt down the same bulbs.
The 2017
Ateca was sold as full LED when it wasnt, full LED at the front, not at the back. By 2020 it became full LED. Having some of those LEDs in the front might have helped where people find they need to fit capacitors etc. Half LED in the early models helped to make it full LED

.