Excessive Engine Vibrations Force Alonso to Withdraw from Chinese Grand Prix with Concerning Physical Effects
Fernando Alonso experienced alarming numbness in his extremities during the Chinese Grand Prix before being forced to retire, a troubling symptom linked to severe vibration issues plaguing Honda's power unit. The Japanese manufacturer, now partnered with Aston Martin as its factory team for 2026, continues to grapple with significant reliability challenges as it adapts to the sport's latest technical regulations.

Aston Martin's championship ambitions have hit another roadblock at the Chinese Grand Prix, where Fernando Alonso was compelled to retire after experiencing distressing physical symptoms stemming from his Honda power unit's persistent vibration problems.
The two-time world champion reported a concerning loss of sensation in both his hands and feet during the race—a direct consequence of the extreme oscillations emanating from beneath the chassis. The severity of the issue proved serious enough to warrant his withdrawal from the competition.
Honda's integration with Aston Martin marks a significant chapter in the Japanese manufacturer's F1 journey, with the partnership established as a works relationship beginning this season. However, the transition to the 2026 power unit regulations has proven more challenging than anticipated, with the team confronting substantial reliability setbacks that extend far beyond simple teething troubles.
The vibration issue that sidelined Alonso underscores the magnitude of difficulties Honda faces in its effort to establish competitive footing within the new technical framework. As Aston Martin and Honda work to resolve these mounting concerns, questions loom about the timeline for rectifying such fundamental engineering problems that are directly impacting driver safety and operational stability.
Original source
Motorsport.com
Related Regulations
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Full Regulation Text
Article 2.2
2026 Power Unit Regulations
Chapter: Chapter II - Power Unit Changes
In Simple Terms
2026 brings major engine rule changes. The complex MGU-H is removed to cut costs and attract new manufacturers. To compensate, the MGU-K becomes much more powerful and the battery is bigger. The goal is simpler, more sustainable power units that are still cutting-edge.
- MGU-H removed from power units
- MGU-K power increased significantly
- Larger energy store capacity
- Aims to attract new manufacturers
Official FIA Text
For 2026, the power unit will comprise a 1.6 litre V6 turbocharged internal combustion engine with a significantly enhanced electrical component. The MGU-H will be removed. The electrical power output will increase substantially with a more powerful MGU-K and larger energy store.
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 B1.1.8
General Principles & Provisions - Medical Examination
Chapter: ARTICLE B1: ORGANISATION OF A COMPETITION
In Simple Terms
F1 medical officials can ask any driver to undergo a medical check at any time during a race weekend. If a driver's car triggers an Impact Warning Light (indicating a significant crash), they must be ready for an immediate medical examination to ensure they're fit to continue racing.
- Race Director, Chief Medical Officer (CMO), or Medical Delegate have authority to require medical exams at any time
- Impact Warning Light activation triggers mandatory immediate medical examination
- Medical checks are safety-focused to protect driver wellbeing
- Drivers must comply with medical examination requests
Official FIA Text
Race Director, CMO or Medical Delegate can require medical examination at any time. After Impact Warning Light activation, driver may be required for immediate examination.
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