In a viral TikTok video that garnered over 3 million views within three days, auto expert Brian, known online as "Mr. Regular," from the popular YouTube channel Regular Car Reviews, explained why continuously pumping gas after the nozzle clicks off can be detrimental to your vehicle. The practice, he warns, can lead to significant damage and safety risks, making it an unwise habit for any driver. This article delves into the reasons behind this advice and explores the potential consequences of overfilling your fuel tank.

Brian’s explanation centers on the importance of stopping immediately when the pump nozzle clicks. The filler neck, which connects the fuel cap to the tank, plays a crucial role in ensuring that fuel flows smoothly without spilling. When drivers continue to pump gas past this point, they risk introducing excess fuel into areas not designed to handle it. Specifically, the ventilation system that allows air to escape as fuel enters can become compromised, leading to potential malfunctions.

The vented fuel cap is another critical component affected by overfilling. Inside the cap are small vents and drain holes that facilitate proper airflow. By overfilling, these vents can become obstructed, disrupting the balance of air and fuel within the tank. Brian emphasizes that this disruption can cause the car's electronic control unit (ECU) to malfunction, potentially triggering the check engine light and other issues. Moreover, having fuel in the filler neck poses additional safety hazards.

Some users have argued that overfilling isn't always avoidable, especially if the pump stops at an inconvenient amount. However, Brian counters this by questioning whether the extra few ounces of fuel are worth the potential trouble. For many vehicles, particularly older models, the benefits of overfilling are minimal compared to the risks involved. He humorously compares the practice to unhealthy habits, suggesting that just because something hasn’t caused immediate harm doesn’t mean it’s safe or advisable.

Ultimately, the consensus among experts like Brian is clear: the risks associated with overfilling far outweigh any perceived advantages. Ensuring that you stop pumping gas when the nozzle clicks off helps maintain your vehicle’s performance and safety. It’s a simple yet essential practice that every driver should adopt to protect their investment and avoid unnecessary complications.