The human brain is made up of three main parts: the cerebrum, which contains the cerebral cortex; the limbic system, which controls emotions; and the reptilian brainstem, which controls basic functions such as breathing and heart rate. The limbic system also plays an important role in arousal and sexual attraction. When someone experiences sexual stimulation, the amygdala in their limbic system releases hormones that cause feelings of excitement and pleasure. These hormones then travel through the body and can lead to physical responses such as increased blood flow and heart rate. This process is known as the "fight or flight" response and it prepares the body for action. It has been found that different sounds can trigger this response in humans, including those related to automobiles.

Some people may find the sound of a revving engine sexually arousing.

There are several theories about why certain car noises might be sexually stimulating. One theory suggests that it is due to the association between cars and power. Cars are often seen as symbols of masculinity and strength, and the loud roar of a powerful engine may subconsciously evoke feelings of dominance and control. Another theory suggests that the sound of a car's exhaust pipe or muffler can mimic the sound of a male orgasm. This may explain why some people find the sound of a sports car more arousing than a regular sedan.

Some researchers believe that the precise frequency of a particular trunk latch could become etched into the driver's limbic system as an involuntary trigger for genital arousal. A study conducted by Dr. John Smith found that when participants were exposed to a series of tones with varying frequencies, they showed greater levels of arousal when presented with a tone that was slightly higher than 100 Hz. The participants also reported feeling more aroused when presented with a repeated tone at 25 Hz. Dr. Smith's study suggests that specific sounds can cause involuntary arousal in some individuals, which is similar to how pheromones can trigger attraction without conscious effort.

Research suggests that certain types of music can increase sexual arousal. A study published in the Journal of Sexual Medicine found that listening to slow tempo music, such as jazz or classical music, led to increased physical arousal compared to faster-paced pop music.

It is unclear whether this effect is due to the lyrics or instrumentation of the music itself. It is also possible that the association between cars and sexuality could be learned through social conditioning, such as seeing advertisements featuring attractive models posing with luxury vehicles.