Arkana Ignition Coil

Sounds like a coil pack issue. The symptoms are classic, like a bad light bulb dimming before it goes out completely. Have you checked the spark plugs and coil pack connectors for any obvious damage or corrosion? It's worth a quick look before assuming the worst.

Connectors seem fine, no visible corrosion. Spark plugs were replaced 10000 km ago. If it is a coil, is there a way to pinpoint which one is the culprit without specialized tools?

Without diagnostic tools, it's tricky. Swapping coils around to see if the misfire follows is a method, but risky. You could end up damaging something. Given it's a 2023 model, I'd advise getting it checked professionally. Could save you money in the long run.

Thanks, took your advice. Workshop confirmed defective ignition coil. Replaced, total cost 95€. Runs perfectly now.