Terms of use
Version 1.10 · Last updated 31 October 2026
These terms apply to the TREX website, the TREX iOS app and the TREX API. By using TREX, you agree to them.
A free information service
TREX is free. It shows fuel prices collected from public sources to help you decide when to fill up. There's no account and nothing to buy. We may change, pause or stop the service at any time.
Prices are a reference, not a promise
Fuel prices: Energy Policy and Planning Office (EPPO), Ministry of Energy — eppo.go.th
Tomorrow's prices: PTT OR announcements (pttor.com).
Prices are Bangkok reference prices and may differ at the pump. TREX is not affiliated with or endorsed by EPPO or any fuel brand.
Prices change, sources can be late or wrong, and we can make mistakes, so we can't guarantee that any price is accurate, complete or up to date.
“Verified” and “Estimated”
“Verified” means two sources agree on the price. “Estimated” means a brand has no fresh price yet, so we show the market price instead (regular grades only). Neither label is a guarantee.
Check the pump price
Always check the price on the pump before you fill up. The pump price is what you pay.
To the extent Thai law allows, TREX and Issarapong Poesua aren't liable for any loss from using or relying on prices shown in TREX. Nothing in these terms limits liability that can't be limited under Thai law.
Using the API and data
You may use the TREX API and data at a reasonable rate. Don't send excessive or automated requests that strain the service, get around rate limits or caching, or use TREX to mislead people. We may limit or block traffic that does.
Trademarks
Fuel brand names and logos shown in TREX are trademarks of their owners. TREX isn't affiliated with, endorsed by or sponsored by any fuel company or government agency.
Fonts and open-source licenses
TREX uses these open-source typefaces under their licenses.
- Anuphan typeface — Copyright 2019 The Anuphan Project Authors (https://github.com/cadsondemak/Anuphan). Licensed under the SIL Open Font License, Version 1.1 (https://openfontlicense.org). License text (OFL)
- Geist Mono typeface — Copyright 2024 The Geist Project Authors (https://github.com/vercel/geist-font.git). Licensed under the SIL Open Font License, Version 1.1 (https://openfontlicense.org). License text (OFL)
Feedback you send
When you send feedback, we handle your data as our privacy policy describes.
Changes to these terms
When we change these terms, we update the version and date at the top, and we announce significant changes in the apps and on the website.
Governing law
These terms are governed by the laws of Thailand.
Contact
Questions about these terms: [email protected]