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Reliability risks forced Mercedes to change Hamilton’s engine

Formula One – Mercedes-AMG Petronas Motorsport, Steiermark GP 2021. Lewis Hamilton. Credits: Daimler.

Andrew Shovlin has spoken about Mercedes’ decision to give Lewis Hamilton the fourth internal combustion engine.

Why it matters: The Briton got new power unit components ahead of the Turkish GP, resulting in a 10-place grid penalty.


  • Shovlin admits that Mercedes had reliability concerns regarding Hamilton’s engine.
  • Mercedes will not change other power unit elements this weekend.

What he had to say:

  • “We’re simulating all the races to the end of the year and there’s a balance of the risk of a reliability issue,” Shovlin told Sky Sports.
  • “Obviously, the thing that you definitely don’t want to do is fail during a race, and then have to take a penalty anyway.”
  • “[More changes are] unlikely, really, [because] it’s a lot of fairly intrusive work when you start changing some of those elements during the race weekend.”
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