E92 Black Passenger Mat?

[Peter-E36]

Is the kink like a speed bump?

Try cleaning it, giving it a good soak and then hang it vertically on a line.

Once it’s dry put it in the car upside down for a week or two.
That has worked for me in the past.

Yep, I steam cleaned it and left it under something heavy for a couple of days, looked acceptable until the second a passenger got into the car

Might give it another go and give it a good soak this time as you say.