Mercedes team principal Toto Wolff believes Yuki Tsunoda's mid-race stoppage at the Dutch Grand Prix may have cost Lewis Hamilton a shot at victory over Max Verstappen.
The Briton looked on course for a first win of a difficult season, having seldom been near the pace of his Red Bull rival following last year's enthralling title battle.
But a virtual safety car stoppage for Alpha Tauri's Tsunoda two-thirds into the race handed Verstappen a free pit stop, before a physical safety car later on allowed the world champion to make another change and overtake Hamilton.
Tsunoda stopped his car after reporting issues with his tyres, removing his safety belts before being ordered to drive back to the pits. His belts were checked and he drove for four more corners, before being told to stop again by his team.
Hamilton was ultimately forced to settle for fourth, behind Verstappen, team-mate George Russell and Ferrari's Charles Leclerc.
Red Bull principal Christian Horner suggested the stoppage of Tsunoda had no effect on the outcome of the race, but Wolff felt the decision to send the Alpha Tauri – Red Bull's sibling team – back out likely cost Hamilton.
"If we were to fight for a championship, that would be something I would closely look at," he stated when asked if the FIA should review the incident.
"Now, I think what needs to be investigated for the safety of drivers and everybody out there.
"The driver stopped, unbuckled, did a full lap, came in, the problem wasn't solved, they put the seatbelts back on and he drove out and stopped the car again.
"That probably has changed the outcome of the race that we maybe could have won.
"I think we would have had a fair shot at the win. The race planner said the win was on. It was very close, but it was on."