As the grass box becomes full, the whole hover system begins to fail. You end up dragging the lawnmower around the lawn, as it becomes too heavy to hover. They should really fit a more powerful motor, or else loose the grass box.

It’s also not great at dealing with a lawn that has bumps and divits. Any small uneven area, and it crashes to a halt.

I’d recommend investing a little more money and get a more expensive petrol hover lawnmower.