2026 BELGIAN GRAND PRIX

17 - 19 July 2026

The FIA Formula 1 Technical Delegate From The FIA Formula 1 Technical Delegate To The Stewards Document 53

Date 19 July 2026 Time 11:45

Title Technical Delegate's Report Description New PU elements for this Competition

Enclosed 10 BEL GP 26 TDR8.pdf Jo Bauer

2026 BELGIAN GRAND PRIX

17 - 19 July 2026

From : The FIA Formula 1 Technical Delegate

To : The Stewards Date : 19 July 2026

TECHNICAL DELEGATE'S REPORT

The following driver will be using a new energy store unit (ES) for the remainder of the Competition:

Number Car Driver Previously used ES

55 Atlassian Williams Mercedes Carlos Sainz 2

The energy store unit used by Carlos Sainz is one (1) of the three (3) new energy store units allowed for the 2026 Championship season and this is in conformity with B8.2.2 d) of the 2026 Formula One Sporting Regulations.

The following driver will be using a new control electronics unit (PU-CE) for the remainder of the Competition:

Number Car Driver Previously used PU-CE

55 Atlassian Williams Mercedes Carlos Sainz 3

The control electronics unit used by Carlos Sainz is the fourth (4th) of the three (3) new control electronics units allowed for the 2026 Championship season and this is not in conformity with B8.2.2 e) of the 2026 Formula One Sporting Regulations.

Both PU elements have been replaced with the approval of the FIA technical delegate following a written request from the team concerned, this being in accordance with Article B3.5.4 of the 2026 Formula One Sporting Regulations.