In recent months, we had our Miele vacuum cleaners but probably overused something (because of the dog and cat hair) ...
Since the vacuum cleaner developed a little more heat, as usual, we have looked and seen that he "had to" after the filter. Although recommended by Miele time was not yet appear to change, we summarily ordered a new filter on Amazon and could "incorporate" him after only one day.
The vacuum cleaner works like new again. Conclusion: But often times look after the filter and replace if necessary faster than recommended by the manufacturer !!!
