Seems that the reliabilityindex.com link and the initial post have different results. The initial post indicates that Mercedes has excellent reliability. Even tho reliabilityindex.com says that Mercedes is the worst out of the German trio (BMW > Audi > Mercedes).
Comparing a Toyota to a Porsche is pointless, even if the Porsche has 100 times worse reliability than the Toyota. Try that again.
And that is UK report? Toyota/Honda over there are made in Europe or made in Japan ga .. but only make in Canada or made in USA here .. (or made in mexico now??)