Product review (3 stars): It will leak. But the good news is you can fix it.
You should expect it to leak (and not just a little) as of about a year from your purchase... And it apparently happens a lot, because when I googled Avanti leak to try and fix it, I saw countless reviews saying that after a year, the washer was leaking... Yet nobody was offering a solution.
I was about to put mine on the sidewalk but finally found where the leak was coming from and changed the part.. So when yours starts leaking, don't wait like I did, call the number at the back of the washer (they were very helpful). If they don't have the part (it's called a middle hose), you can easily find it on the internet (see picture for part number)