In the know: How loud can your exhaust pipes be?

2021 Honda City RS CVT

Loud exhaust pipes have since been a symbol of power and performance in the automotive scene. Race cars and motorcycles are typically fitted with often noisy, high-performance exhausts to help teams squeeze every ounce of power from their vehicles.

KEY TAKEAWAYS

  • What is the national standard for motor vehicle exhaust noise?

    The national standard for motor vehicle exhaust noise is 99 decibels.
  • What govenment agency has set this standard?

    The government agency that has set this standard is the LTO.
  • Eventually, loud pipes have made their way out of the racetrack and into daily-driven vehicles by way of aftermarket products that most car and motorcycle owners are very fond of. Vehicles fitted with these pipes often get mixed reactions from motorists who share the same road: Sometimes a nod of approval, oftentimes a look of loathing.

    Kia Sportage GT Line

    Why the loud pipe?

    It’s not always about how cool your ride sounds. Those who believe in the saying “loud pipes save lives,” say that one of the benefits of using a loud exhaust is to let other vehicles know that you are approaching.

    While this could be true, exposure to loud noise can also be harmful not only to other drivers but also to the owner of the vehicle equipped with a loud exhaust pipe.

    How loud can your exhaust pipes be?

    The Land Transportation Office (LTO) has issued a recommended national standard of 99 decibels for all motor vehicles saying that “the sound level of the motor vehicle for exhaust of muffler shall not exceed 99 dB, taken at an engine speed of 2,000 to 2,500rpm.”

    Vehicles that exceed the national standard will be required to install an exhaust pipe that complies with the aforementioned regulation.

    Bottom line

    Most vehicles are designed to have low noise levels as exposure to loud noises can be harmful to drivers and passengers. The national standard set by the LTO is intended not only for the benefit of motorists but also to help reduce the country’s noise pollution.

    Photos from Ruben Manahan IV

    Also read: 

    In the know: Is it normal to see water come out of your exhaust pipe?

    In the know: What are mufflers for?

    Read All

    Featured Articles

    Recommended Articles For You

    Read All

    Featured Cars

    • Upcoming

    Car Articles From Zigwheels

    • News
    • Article Feature
    • Advisory Stories
    • Road Test
    • Hyundai teases Ioniq 6 N
      Hyundai teases Ioniq 6 N
      Ruben Manahan IV . Today
    • PH-spec BYD Tang to be offered in PHEV version soon?
      PH-spec BYD Tang to be offered in PHEV version soon?
      Ruben Manahan IV . Today
    • Here are some details about the PH-spec GWM Haval H9
      Here are some details about the PH-spec GWM Haval H9
      Ruben Manahan IV . Jun 16, 2025
    • Mitsubishi to showcase Outlander PHEV’s sound system at OTOTEN2025
      Mitsubishi to showcase Outlander PHEV’s sound system at OTOTEN2025
      Ruben Manahan IV . Jun 16, 2025
    • Up close: Suzuki PH previews local-spec Suzuki Fronx
      Up close: Suzuki PH previews local-spec Suzuki Fronx
      Ruben Manahan IV . Jun 14, 2025
    • Check out the Suzuki Carry's perks, drawbacks
      Check out the Suzuki Carry's perks, drawbacks
      Cesar Miguel . Today
    • Pickup truck comparo: GWM Cannon vs Dongfeng Rich 7
      Pickup truck comparo: GWM Cannon vs Dongfeng Rich 7
      Paulo Papa . Jun 16, 2025
    • Here are the Suzuki Dzire Hybrid's main rivals
      Here are the Suzuki Dzire Hybrid's main rivals
      Cesar Miguel . Jun 13, 2025
    • Picks for pops: best gifts for dads this Father’s Day
      Picks for pops: best gifts for dads this Father’s Day
      Paulo Papa . Jun 13, 2025
    • Do you remember how you got your driver’s license?
      Do you remember how you got your driver’s license?
      Cesar Miguel . Jun 12, 2025
    • Do you still need to wash your car after it rains?
      Do you still need to wash your car after it rains?
      Cesar Miguel . Jun 12, 2025
    • What should you visit first at MIAS 2025?
      What should you visit first at MIAS 2025?
      Cesar Miguel . Apr 11, 2025
    • Do you really need 4x4 for overlanding?
      Do you really need 4x4 for overlanding?
      Cesar Miguel . Mar 26, 2025
    • Number coding 2025: what you need to know
      Number coding 2025: what you need to know
      Paulo Papa . Mar 09, 2025
    • EVs still require lubrication, JAMA execs say
      EVs still require lubrication, JAMA execs say
      Paulo Papa . Mar 09, 2025
    • Suzuki Ertiga Hybrid: modest mover
      Suzuki Ertiga Hybrid: modest mover
      Paulo Papa . Jun 05, 2025
    • ELECTRIA: 2025 BYD Atto 3 - updates done right
      ELECTRIA: 2025 BYD Atto 3 - updates done right
      Cesar Miguel . Jun 05, 2025
    • Dongfeng Nammi: Stylish all-rounder
      Dongfeng Nammi: Stylish all-rounder
      Cesar Miguel . May 21, 2025
    • First drive: Suzuki Dzire Hybrid
      First drive: Suzuki Dzire Hybrid
      Cesar Miguel . May 02, 2025
    • Kia Sorento Turbo Hybrid's 4 unique features vs. most midsize SUVs
      Kia Sorento Turbo Hybrid's 4 unique features vs. most midsize SUVs
      Ruben Manahan IV . Apr 30, 2025