What is the rated engine speed of a car?

[KadenDella]

Each company tunes their engines differently, so the rated speed also varies. Some higher-end cars can reach over 6,000 RPM, while rotary engines can even exceed 11,000 RPM. Generally, only manufacturers and 4S stores have this information. Here is some relevant information: Engine speed: The engine can truly demonstrate its advantages when the speed exceeds 2,000 RPM. The range between 2,000 and 4,000 RPM is considered the healthy speed zone for an engine, allowing it to perform optimally. If the speed is too low, fuel combustion in the cylinders is incomplete, leading to carbon buildup in the engine, which can cause significant damage over time. Speed information: Different car models and engine displacements have varying rated and maximum speeds. Generally, for passenger cars, the red zone starts between 6,000 and 7,000 RPM. Entering the red zone indicates that the current speed is approaching the engine's rated limit.