How loud is the loudest car stereo?
The dB Drag Racing Association reports a score of 184.9 dB by Alan Dante in Brazil in October 2019, which it called the loudest score ever recorded in legal SPL competition. An earlier world record of 181.0 dB was set in 2013. Scores are sound pressure measured inside the vehicle; weighting is not stated.
- Level
- 181–184.9 dB maxunweighted maximum sound level
- Daily limit
- No safe unprotected exposureNIOSH, at the loud end
What the numbers mean
How it was measured. dB Drag Racing competition scores measured inside the vehicle with the TermLab metering system: 181.0 dB world record (2013) and 184.9 dB (2019). Weighting not stated. These are dB Drag Racing Association results, not Guinness World Records.
dB Drag Racing rewards whoever can produce the loudest sound inside a vehicle, measured with a metering system called TermLab. Record vehicles are heavily modified, and the score is a measurement inside the cabin, not a level anyone could listen to.
In 2013 Craig Butler's heavily modified Astro van scored 181.0 dB at Spring Break Nationals, beating the previous record of 180.2 dB from October 2012. In 2019 Alan Dante qualified with 184.3 dB and then scored 184.9 dB.
How long is safe?
At 184.9 dB the level is above 140 dB, where harm can be immediate.
| Level | NIOSH limit (85 dBA, 3 dB rule) | OSHA limit (90 dBA, 5 dB rule) | UK/EU 80 dB(A) action value reached after | UK/EU 85 dB(A) action value reached after |
|---|---|---|---|---|
| 181 dB max | under 1 s | under 1 s | under 1 s | under 1 s |
| 184.9 dB max | under 1 s | under 1 s | under 1 s | under 1 s |
Times are for a whole day’s exposure, with the rest of the day quiet. The workplace limits were written for adults at work, not for children. Work out a mixed day with the noise dose calculator.
Protecting your hearing
Nobody sits in these vehicles during a record run. For ordinary car audio, keep the volume at a level where you can still hear traffic and sirens.
Earplug and earmuff ratings (NRR in the US, SNR in the UK and EU) are lab figures; real-world protection is usually lower. How to read the ratings.
Compared with sounds nearby
Using midpoints of each range. Energy multiplies by 10 every 10 dB; perceived loudness roughly doubles (why).
- Space Shuttle launch (142–155 dB max): this has about 2,786× its sound energy and sounds about 10.9× as loud.
- Saturn V launch (170–175 dB max): this has about 11× its sound energy and sounds about 2.1× as loud.
Questions
What is the loudest car stereo ever?
The dB Drag Racing Association reports 184.9 dB, scored by Alan Dante in Brazil in October 2019, measured inside the vehicle.
Is this a Guinness World Record?
These are dB Drag Racing Association competition results rather than a Guinness World Records title.
Sources
- Alan Dante Shatters Record, dB Drag Racing Association (termpro.com). Supports: dB_high: 184.9 dB.
Then, he backed up this score with a mind-blowing score of 184.9 db.
Checked 2026-11-03. - Alan Dante Shatters Record, dB Drag Racing Association (termpro.com). Supports: summary: loudest legal SPL score.
This is the loudest score ever recorded in legal SPL competition
Checked 2026-11-03. - Alan Dante Shatters Record, dB Drag Racing Association (termpro.com). Supports: body: 184.3 dB qualifying.
Alan qualified with a staggering 184.3 db run.
Checked 2026-11-03. - Craig Butler Sets New dB Drag Racing World Record, dB Drag Racing Association (termpro.com). Supports: dB_low: 181.0 dB.
establishing his new world record at 181.0 db
Checked 2026-11-03. - Craig Butler Sets New dB Drag Racing World Record, dB Drag Racing Association (termpro.com). Supports: conditions: inside the vehicle.
dB Drag Racing is an organization rewarding the person who can produce the loudest sound inside a vehicle.
Checked 2026-11-03. - Craig Butler Sets New dB Drag Racing World Record, dB Drag Racing Association (termpro.com). Supports: body: earlier record.
the previous world record established in October of 2012
Checked 2026-11-03.
This page is general information, not medical advice. If you have ringing in your ears, muffled hearing or any change in your hearing, see an audiologist or your doctor.