Matiz Stalling Engine Light

That stalling and check engine light combo sounds like it could be a tank ventilation valve issue. Basically, the valve controls the flow of fuel vapors from the tank to the engine. If it's stuck closed, it can create a vacuum in the tank. This vacuum can cause the engine to stall, especially at idle. The check engine light comes on because the engine's computer detects the abnormal pressure. Have you checked the hoses connected to the purge valve for any clogs or kinks?

Thanks for the quick reply! 'Purge valve'... I've heard the term, but I'm not exactly sure where to find it or what the hoses look like. Is it something I can easily check myself, or am I better off just taking it to a mechanic?

Okay, so the purge valve is usually located somewhere near the engine, often on the intake manifold. The hoses are small, maybe like a finger's width, rubber or plastic. You could try to locate it and check the hoses yourself, but honestly, if you're not too confident, it might be best to get a professional to take a look. A clogged hose is easy to fix, but if the valve itself is faulty, you'll need a replacement. The proper diagnostic requires tools for smoke testing.

Thanks a lot for the advice. I took your advice and booked my Matiz into the shop. Turns out you were spot on – it was a ventilation valve issue and the hoses were clogged with muck! They cleaned the hoses and replaced the valve. Cost me around 175€, but the car's running great now. No more stalling, and the check engine light is gone!