Articles:
Daily Telegraph recommended.
Automatic height adjustment not working correctly.Not picking up like it once was.

Difficult to push on the carpet (especially deep pile carpet).No power at all when you switch it on.Smoke, smell, or ominous rumbling from the motor.

Red ‘bag full’ warning light illuminated when the bag is empty.Cutting out after a short time with a warning light on.

‘Check brush’ light illuminated.
All of these problems can be repaired, probably for less than you imagine.Even cheaper if you use.
aftermarket bags.is nice and cheap to buy.
They are quite robust and well suited to a commercial environment..The Sebo Evolution: The Bad Points.