The FIA will meet with engine manufactures on Friday to discuss the future of Formula One's power unit regulations after 2020.
The last major engine regulation change came in 2014, when the sport ditched naturally-aspirated V8s for a fuel-efficiency formula based around V6 turbo hybrids. Last year, those regulations were locked in place until 2020 by an agreement between teams and the FIA aimed at achieving greater performance convergence while lowering costs over the coming seasons. However, after 2020 all options are open and Friday's meeting is aimed at opening discussions with existing and potential F1 engine manufacturers over which direction to take.