Skoda Karoq engine running lean

That definitely sounds like a lean running issue. I had similar symptoms with my old Renault Megane – check engine light, rough idling, and a noticeable loss of power. In my case, it turned out to be a faulty oxygen sensor messing with the fuel mixture. Have you checked yours?

Interesting. Where exactly is the oxygen sensor located, and is it something I could potentially check myself, or is specialized equipment needed? I've already visually inspected the throttle body, and it seems clean. Also, could a clogged catalytic converter or a faulty EGR valve cause these lean running issues?

The oxygen sensor is usually located in the exhaust system, before and after the catalytic converter. You could visually inspect it for damage, but testing it properly requires a multimeter and some know-how. As for the catalytic converter and EGR valve, yes, a clogged cat or a malfunctioning EGR can definitely cause lean running conditions. However, since you mention jerking during acceleration, that points more directly toward fuel delivery issues, like a bad injector. Given the mileage and the symptoms, I'd lean towards getting the injectors professionally checked. Might be time to visit a workshop.

Huge thanks for the input. I took it to my local garage, and after diagnostics, they confirmed it was indeed a faulty injector. Replaced all four injectors, and it's running like new again. The whole job, including parts and labor, came out to 515€. A painful but necessary expense. Appreciate the help!