In a manual car, you have three pedals – the accelerator, the brake, and the clutch. You also have up to 6 forward gears, and one reverse gear. Whereas in an automatic vehicle you only have two foot peddles, the “accelerator” and the “break” and you use a forward gear “drive” or the “reverse” gear to go backward and the gear changes are made automatically. When the transmission is put into “drive” the car will automatically select the correct gear according to the load on the engine and the road speed and will speed up when the accelerator is depressed.
On a manual car, the accelerator doesn’t necessarily make the car go faster. This is dependent on what you do with the clutch and the gears, and the brake pedal, and the incorrect usage of the clutch and the gears can cause the engine to stall.