Macan Diesel DPF Crisis: Black Smoke & Power Loss Help?

Hi there, I had a similar issue with my 2015 Porsche Cayenne Diesel last year. The symptoms you're describing are exactly what I experienced, the black smoke, rough running, and that annoying DPF light. It turned out my DPF was internally damaged and couldn't regenerate properly anymore. Took it to the Porsche dealership after my local mechanic couldn't sort it out properly. They did a thorough diagnosis and confirmed the DPF was internally defective, some of the honeycomb structure had collapsed. It wasn't a quick fix, had to get the entire DPF unit replaced. It was quite serious as it could've led to more engine damage if left unattended. My advice would be to get it to a Porsche specialist or dealership ASAP. This isn't something you want a general mechanic messing with, as these systems are pretty complex. The longer you drive it with these symptoms, the more you risk damaging other components. Hope this helps.

Thanks for sharing your experience! That's really helpful to know. My situation sounds pretty much identical to what you went through. I'm going to take your advice and book it in with a Porsche specialist. Just curious, do you remember roughly how much you ended up paying for the DPF replacement? Also, has everything been running smoothly since the fix, or have you had any other issues pop up?

Hey again! Thanks for asking about the follow-up! Yeah, I can tell you exactly what it cost me, ended up being 1550€ to fix the defective DPF. I know it's not cheap, but honestly, it was worth every penny because the car's been running like a dream since then. The good news is that since getting it fixed at the Porsche dealer, all those annoying symptoms completely disappeared, no more black smoke, the engine's super smooth now, and the fuel consumption is back to normal. It's like having a new car again! Haven't had a single DPF-related issue pop up in the past year. My best advice? Don't wait around on this one. I know the price tag might make you wince (trust me, I did too!), but it's better than risking more expensive engine damage down the road. Plus, having that peace of mind when you're driving is priceless. Let me know how you get on with the specialist!

Hey, thanks so much for all the details! Just wanted to update you on what happened. I took your advice and went to the Porsche specialist last week. You were spot on, it was the DPF causing all the trouble. Ended up costing me around 1700€ in total because they found a few other minor issues while they were at it. Picked up the car yesterday and wow, what a difference! The black smoke's completely gone, engine's purring like a kitten, and it's got all its power back. Feels like I'm driving a new car! Really glad I didn't try to cheap out with a general mechanic. Thanks again for pushing me to get it done properly. You probably saved me from some serious headaches down the road. Really appreciate you sharing your experience, it made the decision to get it fixed at the specialist much easier. Take care!