When the 2026-30 engine specification was being devised, both Audi and Porsche seemed ready to commit to the series. This increased the emphasis on sustainability and road relevancy. The outcome was a 50:50 power split between the internal combustion engine and the electrical output.
But as initial simulator data was provided to teams, concerns were raised about drivers having to slow suddenly on straights and needing to downshift gears due to the extreme battery regeneration required, which led to the 470bhp (350kW) of electric power dropping out.
