F1’s 2026 TPC testing rules criticised as costly and outdated. F1 TPC testing rules explained: 20 days, 1,000km limit and rising costs.

Formula 1’s regulatory revolution has not brought a major reduction in the number of Testing of Previous Cars days available in 2026, despite the limited relevance of old-generation machinery to the sport’s radically different new technical era. Each team can still conduct up to 20 days of TPC testing in Formula 1, prompting questions about whether these costly programmes still fulfil their intended purpose.

TPC sessions allow teams to run cars from the previous regulatory generation. In principle, these tests are not intended to provide a performance advantage that can be transferred to the current technical project. They were primarily conceived to give reserve drivers and promising academy prospects an opportunity to experience Formula 1 machinery.

How F1’s 2026 TPC testing rules work

In recent years, however, several established race drivers—including some with considerable Formula 1 experience—have completed extensive TPC programmes. The FIA therefore introduced a maximum annual allowance of 1,000 kilometres for drivers entered, or intended to be entered, in the World Championship.

The main rules governing TPC running are:

• Each team may complete up to 20 TPC testing days per calendar year.
• Drivers entered, or intended to be entered, in the championship may cover no more than 1,000 kilometres in total.
• Those 1,000 kilometres may be accumulated across a maximum of four of the 20 available TPC days.
• Cars must use component and software specifications previously employed during the relevant regulatory period, meaning new upgrades cannot be developed through TPC running.
• TPC sessions are prohibited at a circuit during the 60 days preceding a Grand Prix at the same venue.

Why old F1 cars offer limited value in the 2026 era

With Formula 1 no longer operating under regulatory continuity, the practical value of TPC testing has inevitably diminished for both teams and academy drivers. The new generation of cars presents fundamentally different challenges from the machinery used during the previous technical cycle.

Young drivers testing an older car become accustomed to aerodynamic downforce levels that no longer exist in the same form. Meanwhile, the highly complex electrical energy management required by the new power units cannot be reproduced with previous-generation machinery and can therefore only be explored through simulator work.

Leonardo Fornaroli is a notable exception. With McLaren’s support, the Italian has completed extensive testing as he works towards a possible future Formula 1 opportunity with Haas. For the overwhelming majority of drivers taking part in these programmes, however, there is little realistic prospect of securing a race seat at the highest level of motorsport.

The considerable cost of global TPC programmes

The logistical costs also deserve attention. Many TPC sessions are organised at circuits located a considerable distance from the teams’ headquarters, with recent programmes taking place at venues such as Austin, Fuji and Portimão. The financial burden of transporting cars, equipment and personnel was already a concern amid the rising cost of maintaining F1’s TPC system during the transition to the new engine regulations.

These circuits are far from the teams’ bases and, in several cases, do not even feature on the 2026 Formula 1 calendar. That leads to an obvious question: what is the purpose of an expensive form of track activity that offers such limited relevance to the next generation of drivers?

Would collective academy driver tests make more sense?

The current system exposes the contradictions in Formula 1’s long-running campaign to contain costs—at least in principle. A more productive alternative could be the reintroduction of collective testing sessions reserved exclusively for each team’s academy drivers while retaining the present restrictions designed to prevent technical development.

For example, teams could be prohibited from testing any component that had not already been used during at least one official championship session. That would prevent them from developing upgrades outside official race weekends while allowing young drivers to gain meaningful experience in machinery more closely related to the current generation.

Such a solution would require little more than common sense. Formula 1 could also open these testing days to spectators, giving fans an affordable opportunity to watch the cars on track. The decision to introduce further restrictions on TPC circuits for 2027 demonstrates that the regulations remain open to revision.

Sometimes reversing course is not an admission of failure. It can instead be a sign that the sport is mature enough to recognise when an established system no longer serves its original purpose.