Alonso's Honda Power Unit Failure Triggers Early Red Flag in Mexico City Qualifying

Fernando Alonso’s Mexico City Grand Prix qualifying campaign ended in frustration before it had properly begun, with the Aston Martin driver ordered to stop on track and triggering an early red flag in Q1.

Why it matters:

Alonso was expected to progress comfortably from the first segment, but the stoppage removes him from the fight and raises fresh questions over Honda’s 2026 power unit reliability at a critical stage of the season.

The details:

• With 11 minutes remaining in Q1, Alonso was told urgently over the radio to stop the car in the stadium section.
• The two-time champion questioned why he could not return to the pit lane, but his race engineer insisted he halt on circuit.
• Television replays showed a puff of smoke from the rear of the AMR26 earlier in the lap, pointing to another Honda power unit problem.
• Alonso struck his steering wheel in anger as he stopped, having looked likely to advance to Q2.
• He was then noted for “general safety” after failing to refit his steering wheel before exiting the car.

What’s next:

The red flag interrupted the opening phase and handed Aston Martin another reliability headache to investigate. For Alonso, the immediate concern is whether the issue has damaged components or forces grid penalties, while rival teams will watch closely for any repeat of Honda’s troubles.