Mercedes Summoned for Urgent Discussions Following McLaren's Chinese GP Engine Catastrophe
McLaren faces a critical juncture after both its drivers were sidelined before the Chinese Grand Prix even began due to power unit issues. The Woking-based team plans immediate consultations with engine supplier Mercedes to address the mechanical failures that left Oscar Piastri and Lando Norris unable to compete.

A disappointing round at the Chinese Grand Prix has forced McLaren into emergency talks with Mercedes, their Formula 1 power unit provider, after a catastrophic weekend left the team without either of its cars on the starting grid.
The scale of the mechanical nightmare became apparent when both Oscar Piastri and Lando Norris failed to take the start, marking an unprecedented setback for the Papaya team. Rather than attempt damage control, McLaren has opted to engage in substantive dialogue with Mercedes to understand what went wrong and prevent a recurrence of such a disastrous outcome.
The partnership between McLaren and Mercedes will need to produce answers quickly, as the focus now shifts to determining whether design, manufacturing, or operational issues were responsible for the twin DNFs before a single lap had been completed at the Shanghai International Circuit.
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Related Regulations
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Full Regulation Text
Article 48.1
Race Start Procedure
Chapter: Chapter IV - The Race
In Simple Terms
The race start follows a strict countdown. At the one-minute signal, all engines must start and team staff must leave. If a car has problems after the 15-second signal, the driver raises their arm and the car gets pushed to the pit lane while others proceed. This ensures safety and fairness in race starts.
- Engines must start at one-minute signal
- Team personnel leave grid by 15-second signal
- Drivers with problems raise arm for assistance
- Stricken cars pushed to pit lane
Official FIA Text
When the one minute signal is shown, engines should be started and all team personnel must leave the grid by the time the 15 second signal is shown. If any driver needs assistance after the 15 second signal he must raise his arm and, when the remainder of the cars able to do so have left the grid, marshals will be instructed to push the car into the pit lane.
Article 5.1
Definition of a New PU Manufacturer
Chapter: SECTION C: TECHNICAL REGULATIONS
In Simple Terms
A 'New PU Manufacturer' is a company entering F1 for the first time that hasn't built power units before (2014-2021) and hasn't inherited significant technology from existing manufacturers. If approved by the FIA, they receive special benefits and exemptions for 5 years (from 3 years before entry through 1 year after). The FIA evaluates applicants based on their facilities, engine experience, and ERS system knowledge.
- New PU Manufacturers must meet two conditions: no prior homologation since 2014 AND no significant inherited IP from established manufacturers
- Approved new manufacturers receive a 5-year window of special rights/exemptions (N-3 to N+1 calendar years)
- The FIA has absolute discretion in granting status and evaluates applicants on infrastructure investment, ICE experience, and ERS system expertise
Official FIA Text
A PU Manufacturer intending to supply PUs for the first time in year N, will be considered to be a "New PU Manufacturer" if it (or any related party): a. has not homologated a PU at least once in the period 2014-2021; and b. has not received any significant recent Intellectual Property from a PU Manufacturer who is not a New PU Manufacturer, subject to the conditions outlined in Article 5.2 of this Appendix. (together, for this Article 5 only, the "Necessary Conditions") The "New PU Manufacturer" status will be granted by the FIA, at its absolute discretion, for the complete calendar years from N-3 to N+1. In order to be granted the "New PU Manufacturer" status, the PU Manufacturer in question must, upon the request of the FIA, provide the FIA with all of the detailed information or documents requested by the FIA describing the commercial background and details of the PU Manufacturer's business, the Intellectual Property owned by the PU Manufacturer and the technical relationship between the PU Manufacturer and any other related entity or persons (the "Requested Documentation"). PU Manufacturers granted a "New PU Manufacturer" status are given additional rights or exemptions in certain provisions of the Technical, Sporting and Financial Regulations. In order to assess whether the Necessary Conditions have been satisfied by a PU Manufacturer, the FIA will assess the Requested Documentation provided by the PU Manufacturer with regard to three factors: a. Infrastructure: the necessity for the PU Manufacturer to build facilities, invest significantly in assets, and hire personnel with prior Formula 1 experience; b. ICE status: the prior experience of the PU Manufacturer in Formula 1 Internal Combustion Engines, and potential possession of significant recent Intellectual Property; and c. ERS status: the prior experience of the PU Manufacturer in Formula 1 ERS systems, and potential possession of significant recent Intellectual Property.
Article B8.2.1
Power Unit Conformity
Chapter: B8
In Simple Terms
Teams can only use power units (engines) in races if every part of that engine was approved by FIA officials when it was first introduced. This means all components must match what the team originally submitted and had checked off as legal.
- Only approved power units are allowed in races
- Every component must conform to the latest homologation dossier
- Parts must have been approved at the time they entered the race pool
- Teams cannot modify or substitute unapproved engine components
Official FIA Text
The only Power Unit that may be used at a Competition during the Championship is a Power Unit which is constituted only of elements that were in conformity, at the date they were introduced in the Race pool, with the latest submitted and approved homologation dossier.
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