C70 Uneven Engine Running

Hello, I had a similar issue with my Volvo C70 some time ago. I know that it's the same generation. Do you happen to know the error code? I had similar symptoms, and it turned out to be a faulty oxygen sensor messing with the fuel mixture. It's like the engine wasn't breathing properly.

Thanks for the quick reply! I don't have the exact error code right now, but the mechanic mentioned something about the exhaust system. Could a bad ignition coil, fuel pump, or crankshaft sensor cause similar symptoms? What did the repair ended up costing you?

While ignition coils, fuel pumps, or crankshaft sensors could potentially cause similar issues, my case was definitely the oxygen sensor. My mechanic told me that if the leak is near the sensor, it could also report incorrect measures. Given that you suspect an exhaust leak, I would definitely recommend taking it to a workshop to properly diagnose the issue. If it turns out to be the oxygen sensor, it's a relatively simple fix. Mine was roughly around 250€.

Thank you for your help! I've taken it to the mechanic and as you guessed, it was indeed a leak in the exhaust system. Since the exhaust system leak damaged the oxygen sensor, both where replaced. The whole repair ended up costing me 265€. I appreciate your insights!