Last weekend's Mexican GP has thrown some surprises in terms of performance, not only for fans, but also for the engine manufacturers themselves.
A few things of note:
- Renault were strong but unreliable (ERS and MGU-H issues).
- Renault said they were too aggressive in relation to the climate
- Renault believe Mercedes were very conservative for the altitude
- Honda were stronger than they expected
So, I'm curious how this can actually happen. How can power unit suppliers still be surprised of themselves and their competition when running on a known circuit?
Does anybody have any idea on what is actually being adjusted? I'm aware there are certain measurements to be taken due to the lower cooling capacity, but do they need to work the Turbo harder with the MGU-H? Or slow it down even?