Separate automatic travel, steering and braking before comparing rally laps.
Identify the action the car supplies
Nitro Rally describes a car that runs automatically. Its control field lists left and right turning and Down for the brake; the mouse selects menu items. That makes the first driving question different from finding an accelerator. Once the game confirms those instructions, watch a short, visible section without adding steering corrections. Establish what continues on its own before deciding which part of the motion needs your input.
Give the brake a separate experiment
On a section where the game permits a comparison, use the listed brake briefly and observe the response. Does the car cover less visible ground, stop, or respond in another way? The description does not establish the answer. Distinguish the effect while the input is held from what happens after release. Otherwise, a movement that resumes automatically could be mistaken for an extra command you never gave.
Rejoin the controls deliberately
Next, combine a small steering decision with the braking behavior you actually observed. Keep the intended direction recognizable so you can tell which input changed the result. If the car continues past your intended point, ask whether you misunderstood automatic travel, steering or release behavior. That is a useful diagnosis without a fastest-lap claim. The advertised circuits and unlocks can wait until this basic interaction is clear; they do not supply a brake response curve or a replacement for the running game's instructions.