"For the HRT Racing Car to achieve this top speed without extreme lightweight fuel, either their team chose a setup extremely biased towards qualifying, or the hidden performance of the Toyota power unit far surpasses all major engine suppliers."
"I think the latter is unlikely; otherwise, Ferrari would probably leak the information, as they wouldn't want to nurture a threat."
"That leaves only the former."
Newey provided his own speculation.
Among F1's major engine suppliers, there are indeed performance differences, but the gap is usually not significant.
The absolute performance difference is at most 5 to 10 km/h.
Of course, occasionally unexpected situations arise, such as certain periods of the Kovost engine and Honda power units, which led to Alonso's famous "GP2 engine" complaint.
McLaren's results from the previous two rounds proved that the Mercedes engine is not weak, and there is at least no possibility of being overtaken by the Toyota engine!
