McLaren may consider building its own Formula One engine in 2021 if new power unit regulations make it an affordable alternative to being a customer or works team.
After three and a half seasons with the current V6 turbo hybrid engines, F1 is in the process of drafting a new set of regulations from 2021 onwards. The core principles of the next generation of F1 engines are set to address the perceived failings of the existing power units -- such as cost, over-complication and noise -- but have not yet been confirmed in any detail by the FIA.