On June 7th, the same day as the Turkish and Mexican elections, Luxembourg held three referenda: one proposal would have reduced the voting age to 16, another would have extended voting rights to foreigners living in the country for more than 10 years and the last one would have imposed a ten-year term limit on serving as member of the government. All three proposals were resoundingly defeated, though the term limit measure came closer to being approved than the others (30% in favour).
The background for the term limit proposal is the premiership of Jean-Claude Juncker, who served lasted for no less than 18 years before resigning in 2013 amidst a corruption and spying scandal (he went on to become EU Commission President). Following early elections, a new government formed which excluded Juncker’s party, CSV, from government for the first time since 1979. It is this government that initiated these constitutional amendment proposals.
Though being very common among (semi-)presidential countries, term limits are exceedingly rare among parliamentary systems; the only examples I know of are Thailand and South Africa.
[MSS adds: Perhaps also Botswana among parliamentary systems. In semi-presidential systems, there certainly are cases of term limits on the president, but I do not think there are any such limits on membership in the cabinet. We might also add here that, as far as I know, the only cases with term limits on legislators are all pure presidential systems–some Latin American countries, including Mexico, as well as the Philippines and some US states, including California.]