C70 mass air flow sensor symptoms

The symptoms you describe are indeed indicative of a potential mass air flow (MAF) sensor issue. Consider it like this: the MAF sensor is the engine's nose, and if it can't 'smell' the air properly, the engine won't run right. I had a similar problem with my 2012 Opel Insignia. Before jumping to conclusions, though, a diagnostic check is crucial. Have you checked your air filter recently? A clogged filter can sometimes mimic MAF sensor failure symptoms. Also, do you have any access to a diagnostic tool to read the error codes?

Thanks for your quick reply! I did replace the air filter about 5000 km ago, so I don't think that's the problem. Unfortunately, I don't have a diagnostic tool myself. Is there a reliable way to test the MAF sensor without one?

While there are methods to test a MAF sensor using a multimeter, without proper knowledge and a diagnostic tool, you risk causing further damage or misdiagnosing the issue. Think of it as trying to perform surgery with a butter knife. Given the symptoms and the process of elimination you've already undertaken, it would be prudent to consult a qualified mechanic. They can perform a proper diagnostic test, confirm the MAF sensor is indeed the culprit, and advise on the necessary repairs or replacement. This will ensure the issue is addressed correctly and prevent potential complications down the road.

Okay, thank you for your advice. I took it to a workshop, and you were right, it was the mass air flow sensor. The repair cost 365€, and now the car is running smoothly again.