worst motors of all time

Late 70s early 80s Honda 4 cyl wiped out cam bearings, my 1.5L Civic lasted almost 20,000 miles due to poor oil distribution & poor metal.
The recent Toyotas V6 engines that sludge up should be included too.
I also thought of the 4-6-8 GM engines.

If you've seen the Cars 2 movie the "worst" engine ever mentioned in the Aluminum V8 that GM sold the tooling to the British and was used in Land Rovers and Triumph Tr8s. Well that engine was the base for the Formula 1 engine used by Jack Brabham to win the world championship in '66 and the next year by his team mate Denny Hulme.