Carlos Sainz has theorised that Formula 1 drivers’ levels of competitiveness and performance swings have been dictated by the regulation changes.<br>F1 underwent its biggest overhaul of rules last winter, with changes to both the chassis and engine, which moved grand prix racing away from ground-effects cars to active aero and a 50/50 balance between internal combustion and electrical ...<a class='more' href='https://www.motorsport.com/f1/news/carlos-sainz-changes-in-drivers-competitiveness-could-be-down-to-f1-rules-era/10850413/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>