Williams is set to have both cars disqualified from Singapore Grand Prix qualifying for a technical infringement.

Alex Albon and Carlos Sainz qualified a surprisingly muted 12th and 13th for Sunday’s race at the Marina Bay circuit.

But they have been referred to the stewards after their cars failed post-qualifying inspections.

When the DRS flap was checked both cars exceeded the maximum limit of 85mm on both sides of the rear wing outer area.

Technical regulation breaches are usually a black-and-white matter with exclusion set to follow.

It comes at the race immediately after Sainz scored his first podium for Williams in Azerbaijan.

Sainz had looked strong again through practice, ahead of Albon on pace and with a good chance of starting in the top 10.

But Williams struggled in Q1 and in Q2, and the failed post-race check escalates the team’s disappointment further.