[benglish11]

These auto mowers are so light they generally don’t make much of a pattern in the grass at all

[dylan604]

It's not the weight of the mower that makes the patterns. it's the direction of the suction, the direction of the rotation and cut. Sure, the wheels can leave a depression, but it's the cut that is important.

[fastasucan]

There is no suction afaik, and they cut so regularly (my neighbours use it daily) so the pattern have no time to settle.