
TPC testing - private tests using at least two-year-old cars - has become an increasingly important part of a Formula 1 team’s operation.
These sessions are typically used to develop juniors, although McLaren raised eyebrows last year by running an intensive programme with its current drivers. Red Bull let Max Verstappen test a two-year-old car in Imola as well to get a clearer development path. It prompted the inclusion of a new rule in the FIA’s sporting regulations, capping seasonal TPC mileage at 1,000 kilometres for current F1 drivers.