Wikipedia says Gordon Bajnai, an entrepreneur aged about 41 at the time, who was in power for just one year, by choice:
> In his first speech as PM, he promised drastic measures to stop the negative spiral of the Hungarian economy, and to ease the burden of the international crisis. He also stated that he would remain in power until he had the solid majority of Parliament behind his austerity package, but will stay no longer than a year.
> The new cabinet formed on 29 May 2010. Bajnai was succeeded by Viktor Orbán. After that he retired from politics and returned to business life.
He was a temporary PM after the previous one (Gyurcsany) resigned after a motion of no confidence against him. Bajnai didn't do much, handled the 2008 crisis, and it was known he would not continue.
Funnily, Gyurcsany was removed after a leaked recording on which he said "we have fucked it up. Not just a bit, but much." [1] It's amazing that after 17 years, when Orban's huge lies and corruption is proven, people are fine with that, but when a former clown PM was complaining to his party members that "we should've done better", half the country was in riot.
> In his first speech as PM, he promised drastic measures to stop the negative spiral of the Hungarian economy, and to ease the burden of the international crisis. He also stated that he would remain in power until he had the solid majority of Parliament behind his austerity package, but will stay no longer than a year.
> The new cabinet formed on 29 May 2010. Bajnai was succeeded by Viktor Orbán. After that he retired from politics and returned to business life.