Now it has taken me a long time to write this review. I bought my Oleo-Mac G53 in April 2014 and we are now in Feb 2020. So I've had this mower for 6 years. Never had a problem apart from the first start at the beginning of the season where it takes half a dozen pulls to get going. After that it start pretty much first time.
It does very much what it is supposed to do crunching through grass and twigs and little deadwood strands that are all over my garden. The self propelled motion works well and the mower is still in very good condition - have not done anything to it (not had a single service) but still performs well in my very large garden which takes me over an hour to mow.
I can thoroughly recommend the mower. I have no complaints.