Esteban Ocon has played down suggestions that Mercedes has been using the 'DAS' steering system since 2018.
On-board footage has emerged of Lewis Hamilton apparently pulling on the controversial steering system as long ago as Hungary 2018.
But former Mercedes driver Esteban Ocon denies he knew about it.
"Either they were very, very clever and did not reveal this system to me, or they invented it once I was gone," he told Canal Plus.
"Once I was between the two seats, the Mercedes and the Renault, I was not allowed in the factory or in the simulator. So it was either during that time, or they were very clever."
The Frenchman says he is still training hard even though he is sheltering amid the global pandemic.
"If I start to tell myself that the others are not training anymore and I let myself go, I will not be ready the day the season begins for good," he told RMC.
"I hope we can go to Baku at the beginning of June but for the moment it is too early to say, and apart from that it's not the most important thing anyway."
