V90 Low DPF Exhaust Pressure

Sounds like what happened with my V90, though I didn't notice the smell so much. Low DPF exhaust pressure is common. Have you checked the exhaust back pressure sensor?

The sensor was my suspicion. Were your symptoms exactly the same? Did replacing the exhaust back pressure sensor fix it?

My symptoms were pretty much the same. I'd bet it's the pressure sensor. Take it to a workshop to check; it'll save you a headache.

Dealership confirmed it: defective exhaust back pressure sensor. Repair was 245€. Thanks for the help; your experience was invaluable.