MONTREAL — Quebec Premier François Legault testified on Tuesday that he was kept in the dark about hundreds of millions of dollars in cost overruns at the auto insurance board, laying most of the blame for the scandal on the leaders of the state-run corporation.

Legault was the latest member of the government to take the stand at a public inquiry examining how the SAAQclic online platform, where Quebecers can renew driver’s licences and register for road tests, cost at least $500 million more than planned.

The scandal has upended his government a little more than one year ahead of the provincial election, offering a steady stream of embarrassing headlines and political fodder for the opposition, who have accused Legault and his cabinet of misleading Quebecers.

On Tuesday, the premier sa

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