Alfa Romeo Zhou Guanyu is seeking answers after a never-before-seen problem ruined his Hungarian Grand Prix at the start.
From an F1 career-best fifth on the grid, Zhou suffered a poor start and having been swamped by rivals connected with AlphaTauri's Daniel Ricciardo, triggering a first-corner chain reaction that left Alpine duo of Esteban Ocon and Pierre Gasly out of the race.
Zhou was handed a five-second time penalty by the stewards for the incident and eventually finished 15th behind teammate Valtteri Bottas - whose own start was impacted by having to run wide in avoidance.
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Zhou details problem
Revealing the issue, a confused Zhou told media including RacingNews365: "I was holding the revs before the four lights and I just lost all response from the throttle, so I was starting with zero throttle.
"It's very disappointing, but unfortunately, there's nothing that I can say.
"We need to see in more detail what happened because this is strange and has never happened before at all.
"I tried to recover before the five lights [went out to start the race], tried to go full throttle but nothing was happening.
"My start was a pull-away, it wasn't actually a start. That's why you saw my car not moving.
"It is really disappointing as I think it could have been good on lap one after the start and something happened that we have never experienced before.
"I was obviously trying to brake as last as I could to try and gain some positions back [at Turn 1] but then partly due to the dirty air of the cars ahead, unfortunately, I locked up into them.
"But my race was over after the line."