Hungarian Prime Minister Peter Magyar enjoyed Hungary's national foundation day celebrations on Thursday, some 100 days after he took office, with Budapest residents offering mixed assessments of his performance since defeating Viktor Orban in April elections. 

Some residents praised Magyar's efforts to restore Hungary's international standing. 

"He has made the country better, and it has become more recognised, we are back, and recognised as a solid member of the European Union," said Budapest resident Krisztina Kelemen.

Others were more cautious, saying continued reforms were needed. 

"Actually, we should not expect too many things in three months, not even miracles. Sixteen years of governance have damaged quite a lot of things," said Ferenc Vida, adding that he hoped Magyar would deliver on his promises quickly.

Other residents remained sceptical about the new government's intentions. "I don't expect much good. The truth is, I know people well. It takes a year to see this. They are now just cashing in, collecting the money," said Piri Forgeteg.

Magyar faces his first major credibility test with a looming budget plan that needs to cut spending while honouring voter pledges that helped secure his landslide victory. He is also being measured also on his handling of the Danube water-level crisis, which had the Paks nuclear power-plant running at reduced capacity and risked a complete shutdown.

Magyar announced earlier on Thursday that the nuclear plant should be able to avert a complete shutdown as water levels on the Danube river, its main coolant source, are expected to stay high enough near the plant due to engineering work on the river.

The plant could begin restarting its six idle turbines on Sunday and could be operating at full capacity by Thursday or Friday of next week, Magyar added.

A July survey showed support for his Tisza party at 73 per cent of decided voters compared with just 21 per cent for Orban's Fidesz.