Cookie Policy
The cookies this website uses and how to control them. Last updated July 24, 2026.
Cookies are small files a website stores in your browser; “similar technologies” include browser local storage. This policy lists what Modern Diesel uses, why, and for how long. It works alongside our Privacy Policy.
How your choices work
Strictly necessary storage is always on because the site can’t work without it. Analytics and marketing cookies are on by default for U.S. visitors, and you can opt out at any time: open “Cookie preferences” (the link in the footer of every page) to reject the non-essential categories or turn each on or off individually. Your choice is saved and applied through Google Consent Mode v2, and we automatically honor the Global Privacy Control (GPC) browser signal as a marketing opt-out — no click required.
Strictly necessary
Always active. These keep the site working and are never used for tracking.
| Name | Set by | Purpose | Duration | Type |
|---|---|---|---|---|
theme | Modern Diesel (this site) | Remembers your light/dark theme choice. | Until you clear it | Local storage |
md-consent | Modern Diesel (this site) | Stores your cookie opt-out choices so they persist across visits. | Until you change or clear it | Local storage |
Our contact form is protected by Cloudflare Turnstile, a privacy-focused alternative to CAPTCHA that tells humans from bots without puzzles. It loads only when you interact with the form and may set a strictly necessary token to remember that you passed the check. Turnstile is a security service — it is always on when the form is present, is not used for advertising or cross-site tracking, and so is not part of the analytics or marketing opt-out. See Cloudflare’s Privacy Policy.
Analytics
On unless you opt out. Helps us understand how the site is used (Google Analytics 4 and HubSpot).
| Name | Set by | Purpose | Duration | Type |
|---|---|---|---|---|
_ga | Google Analytics | Distinguishes unique visitors. | 2 years | Cookie |
_ga_<ID> | Google Analytics (GA4) | Keeps the GA4 session state for your visit. | 2 years | Cookie |
__hstc | HubSpot | Main HubSpot analytics cookie — visitor, session, and visit timestamps. | ~6 months | Cookie |
hubspotutk | HubSpot | Identifies a visitor and links them to form submissions in the CRM. | ~6 months | Cookie |
__hssc | HubSpot | Tracks the current session. | 30 minutes | Cookie |
__hssrc | HubSpot | Notes whether the visitor restarted their browser. | Session | Cookie |
Marketing
On unless you opt out (a GPC signal also opts you out). Measures our advertising and conversions (Google Ads and, if enabled, Meta).
| Name | Set by | Purpose | Duration | Type |
|---|---|---|---|---|
md_gclid | Modern Diesel (this site) | First-party cookie holding your Google Ads click ID so we can measure which ads lead to booked work (offline conversion import). Not set — and cleared — if you opt out of marketing cookies or send a GPC signal. | 90 days | Cookie |
_gcl_au | Google Ads | Stores ad-click information to attribute conversions (Conversion Linker). | 90 days | Cookie |
_gcl_aw | Google Ads | Records the Google Ads click ID (gclid) for conversion tracking. | 90 days | Cookie |
_gac_<ID> | Google Ads | Campaign information used to measure conversions. | 90 days | Cookie |
NID | Ad personalization and preferences (also set by embedded Google Maps). | ~6 months | Cookie | |
IDE | Google (DoubleClick) | Measures and targets ads across websites. | ~13 months | Cookie |
test_cookie | Google (DoubleClick) | Checks whether your browser accepts cookies. | ~15 minutes | Cookie |
_fbp | Meta (Facebook) | Identifies browsers for Meta ad delivery and measurement (set when the Meta Pixel is enabled). | 90 days | Cookie |
_fbc | Meta (Facebook) | Stores the Meta ad click ID (fbclid) for conversion attribution. | 90 days | Cookie |
fr | Meta (Facebook) | Ad delivery and measurement on Facebook. | ~90 days | Cookie |
Cookie names ending in <ID> include your account’s Google identifier (for example _ga_ABC123). The exact cookies present depend on which tags fire, and providers may update their cookies over time. Two features load only when you interact with them — our embedded Google Map and the Cal.com booking window — and each may set its own provider cookies once you open it.
Managing your cookies
- On this site: open “Cookie preferences” — the link in the footer of every page or the button above — to reject or re-allow analytics and marketing.
- In your browser: every major browser lets you block or delete cookies in its settings.
- Google Analytics: install the opt-out browser add-on.
- Google ads: manage personalization at My Ad Center.
- Industry tools: optout.aboutads.info (US) and youronlinechoices.eu (EU).
Blocking necessary storage may stop parts of the site from working. Blocking analytics or marketing cookies will not affect the repair services we provide.
Language
Published in English, with a Spanish translation at Política de Cookies. If the two differ, the English version controls.
Questions
Email customer-service@moderndieseltx.com or call the shop.