Shopify Automotive Accessories Schema — Vehicle Fitment, Universal vs Direct-Fit, DOT/SAE Certification & Installation Type Structured Data

Fitment Type — The Core Classification

Fitment type is the single most important structured data attribute for automotive accessories. It determines whether an accessory is compatible with any vehicle (universal), a specific year/make/model (direct fit), or a class of vehicles (semi-universal). Misclassifying a direct-fit product as universal is the leading driver of returns in automotive accessories — a customer who buys "universal" floor mats and discovers they don't fit their 2023 Tacoma crew cab is unlikely to buy again.

The three values and when to use each:

• Universal Fit — no vehicle-specific mounting, fits any car without modification. Phone holders attached to a vent or suction cup, USB-C car chargers, air fresheners, seat gap organizers, generic steering wheel covers. Do not add compatibleWith Vehicle entries for universal products — it creates false signals.
• Direct Fit — designed for a specific Year/Make/Model/Trim. Custom-molded floor mats, trim-specific dash cam mount kits, DIN-standard car stereos (sized for a specific vehicle's head unit cavity), vehicle-specific seat covers, backup camera harnesses for a specific OEM harness. Must include compatibleWith Vehicle array.
• Semi-Universal Fit — fits a range of vehicles within a class or seat configuration. Seat covers for "standard 60/40 split rear bench," truck floor mats for "full-size trucks with extended cab," roof rack cargo nets for "crossbars 40–54 inches apart." Include a vehicleClass additionalProperty describing the class, not a full Vehicle entry.

{
  "@type": "PropertyValue",
  "name": "fitmentType",
  "value": "Direct Fit",
  "description": "Vehicle-specific fitment — designed for exact Year/Make/Model/Trim. See compatibleWith for supported vehicles. NOT a universal-fit product."
}

JSON-LD Example 1 — Dash Cam (Garmin Dash Cam Mini 2)

Dash cams are universal-fit automotive electronics. The key structured data elements are voltage (12V DC — not household AC), power draw for fuse sizing, video resolution, storage, wireless capabilities, and FCC Part 15 certification for the WiFi/Bluetooth radio. No compatibleWith Vehicle entries are needed for a universal-fit device.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Garmin Dash Cam Mini 2 — 1080P Full HD Dash Camera with WiFi",
  "description": "Garmin Dash Cam Mini 2 compact dash camera. 1080P Full HD recording at 30fps. 140-degree wide-angle lens. Automatic incident detection (G-sensor). WiFi connectivity for Garmin Drive app. Continuous loop recording on microSD. Voice control. Power: 12V DC cigarette lighter adapter (included). Hardwire kit sold separately (ACC-001).",
  "sku": "010-02062-00",
  "mpn": "010-02062-00",
  "brand": { "@type": "Brand", "name": "Garmin" },
  "legalDisclaimer": "Check local regulations regarding dash cam usage and recording laws before use. In some jurisdictions, recording audio without consent may be restricted.",
  "hasCertification": [
    {
      "@type": "Certification",
      "name": "FCC Part 15 — Class B Device",
      "issuedBy": {
        "@type": "Organization",
        "name": "Federal Communications Commission",
        "url": "https://www.fcc.gov"
      },
      "certificationIdentification": "FCC Part 15 Class B",
      "description": "FCC Part 15 Class B certification for unintentional radiators. Covers the 2.4GHz WiFi radio for use in the United States. FCC ID printed on device label."
    },
    {
      "@type": "Certification",
      "name": "CE Marking",
      "issuedBy": {
        "@type": "Organization",
        "name": "European Commission",
        "url": "https://ec.europa.eu"
      },
      "description": "CE marking for EU market — Radio Equipment Directive (RED) 2014/53/EU for the WiFi transmitter."
    }
  ],
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "fitmentType", "value": "Universal Fit", "description": "Mounts via suction cup or adhesive to any vehicle windshield. No vehicle-specific mounting required." },
    { "@type": "PropertyValue", "name": "installationType", "value": "Adhesive Mount", "description": "Suction cup mount (included) — removable. Optional permanent adhesive mount disc included. Hardwire kit (permanent, wiring required) sold separately." },
    { "@type": "PropertyValue", "name": "voltageInput", "value": "12", "unitCode": "VLT", "description": "12V DC — standard passenger car and light truck electrical system. Plugs into cigarette lighter / 12V accessory socket. NOT compatible with 24V commercial vehicle systems without voltage converter." },
    { "@type": "PropertyValue", "name": "powerDraw", "value": "0.5", "unitCode": "AMP", "description": "0.5A current draw at 12V (6W). For hardwire kit installation: minimum 1A fuse recommended. Use ACC (accessory) fuse tap for auto-on/off with ignition." },
    { "@type": "PropertyValue", "name": "videoResolution", "value": "1080P Full HD at 30fps", "description": "1920×1080 pixels at 30 frames per second. Wide dynamic range (WDR) for improved exposure in mixed lighting." },
    { "@type": "PropertyValue", "name": "fieldOfView", "value": "140", "unitCode": "DD", "description": "140-degree wide-angle lens. Captures multiple lanes and lane markings." },
    { "@type": "PropertyValue", "name": "storageType", "value": "microSD up to 256GB", "description": "Requires Class 10 / UHS-I microSD card. Card NOT included. Continuous loop recording overwrites oldest footage when card is full." },
    { "@type": "PropertyValue", "name": "wifiCapability", "value": "true", "description": "2.4GHz WiFi — connects to Garmin Drive mobile app (iOS/Android) for footage download and settings." },
    { "@type": "PropertyValue", "name": "gpsBuiltIn", "value": "false", "description": "No built-in GPS. Garmin Dash Cam 47/57/67W models include GPS speed and location overlay." },
    { "@type": "PropertyValue", "name": "nightVisionCapability", "value": "true", "description": "Wide dynamic range (WDR) for night recording. Not infrared night vision — relies on headlights and ambient light." },
    { "@type": "PropertyValue", "name": "gSensorIncidentDetection", "value": "true", "description": "G-sensor automatically saves and locks footage during detected collision or sharp impact." },
    { "@type": "PropertyValue", "name": "Weight", "value": "33", "unitCode": "GRM", "description": "33 grams (1.2 oz) — ultra-compact design hidden behind rear-view mirror." }
  ],
  "offers": {
    "@type": "Offer",
    "price": "99.99",
    "priceCurrency": "USD",
    "availability": "https://schema.org/InStock",
    "url": "https://example-auto.myshopify.com/products/garmin-dash-cam-mini-2"
  }
}
</script>

JSON-LD Example 2 — Custom-Fit Floor Mats (WeatherTech DigitalFit for 2021–2024 Toyota Camry)

Direct-fit floor mats are among the highest-return automotive accessories when fitment data is missing or wrong. The 2021–2024 Toyota Camry (8th Gen) has a different floor pan than the Camry Hybrid — a critical exclusion that must appear in the Vehicle description. Each supported model year should be listed, or a year range used with a single Vehicle entry and explicit generation callout.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "WeatherTech DigitalFit Floor Mats — 2021-2024 Toyota Camry (1st & 2nd Row, Black)",
  "description": "WeatherTech DigitalFit laser-measured floor mats for 2021-2024 Toyota Camry (8th Generation, non-Hybrid). High-density tri-extruded material channels water, mud, and debris away from carpet. Custom-molded to exact Camry floor contours — no trimming required. 1st and 2nd row set, 4 pieces. DOES NOT FIT Camry Hybrid (different floor pan) or TRD variants with factory performance flooring.",
  "sku": "WT-4414491-4414492",
  "mpn": "4414491",
  "brand": { "@type": "Brand", "name": "WeatherTech" },
  "compatibleWith": [
    {
      "@type": "Vehicle",
      "name": "2021-2024 Toyota Camry (8th Gen, Non-Hybrid)",
      "vehicleModelDate": "2021-2024",
      "brand": { "@type": "Brand", "name": "Toyota" },
      "model": "Camry",
      "bodyType": "Sedan",
      "description": "Fits 2021, 2022, 2023, and 2024 Toyota Camry 8th Generation — all trim levels (L, LE, SE, XLE, XSE, TRD) EXCEPT Camry Hybrid. Does NOT fit Camry Hybrid (2021-2024) — Hybrid models have a different floor pan due to battery placement. Does NOT fit right-hand-drive export models."
    }
  ],
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "fitmentType", "value": "Direct Fit", "description": "Laser-measured custom fit for exact Year/Make/Model. Not a universal-fit mat — will not fit other vehicles without modification." },
    { "@type": "PropertyValue", "name": "installationType", "value": "Plug-and-Play", "description": "Drop-in installation — hooks onto factory mat retention clips. No tools required. Removes and reinstalls in seconds." },
    { "@type": "PropertyValue", "name": "matPosition", "value": "Full Set (4pc) — 1st Row + 2nd Row", "description": "Driver mat, passenger mat, and 2-piece rear row set. Covers all four floor positions. Trunk/cargo liner sold separately (WT-401088)." },
    { "@type": "PropertyValue", "name": "materialType", "value": "HDTE Thermoplastic Elastomer", "description": "High-density tri-extruded (HDTE) material — flexible, non-toxic, recyclable TPE compound. Waterproof, does not crack in cold temperatures. Not rubber (no rubber odor). WeatherTech proprietary compound." },
    { "@type": "PropertyValue", "name": "weatherRating", "value": "All-Weather", "description": "All-weather waterproof — channels liquid and debris to outer edges, away from carpet. 'All-weather' implies waterproof/liquid-blocking. Not to be confused with 'all-season carpet' mats (year-round use but not waterproof)." },
    { "@type": "PropertyValue", "name": "colorOptions", "value": "Black, Tan, Grey", "description": "Available in three colors to match Camry interior options. Black shown." },
    { "@type": "PropertyValue", "name": "antiSlipBacking", "value": "true", "description": "Textured bottom surface grips carpet to prevent mat shifting. Compatible with factory Camry floor mat retention hooks." },
    { "@type": "PropertyValue", "name": "countryOfManufacture", "value": "United States", "description": "Manufactured in Bolingbrook, Illinois, USA." }
  ],
  "offers": {
    "@type": "Offer",
    "price": "179.95",
    "priceCurrency": "USD",
    "availability": "https://schema.org/InStock",
    "url": "https://example-auto.myshopify.com/products/weathertech-camry-floor-mats"
  }
}
</script>

LED Lighting Accessories — DOT/SAE Certification Schema

Aftermarket LED lighting is one of the most legally complex automotive accessory categories. Exterior lighting sold for road use in the US must comply with Federal Motor Vehicle Safety Standard (FMVSS) 108, administered by NHTSA. The SAE (Society of Automotive Engineers) publishes the individual function standards that FMVSS 108 references. Products that do not carry DOT compliance are technically illegal for on-road use in the US — and must carry a legal disclaimer to protect the merchant from liability and prevent false matches to "road-legal LED headlights" queries.

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Auxbeam F-16 Series H11 LED Fog Light Bulbs — 6000K White, DOT Compliant",
  "description": "Auxbeam F-16 Series H11/H8/H9 LED fog light conversion kit. 6000K cool white output. 6000 lumens per pair. Plug-and-play for most H11 fog light sockets. Fan-cooled aluminum housing. DOT compliant per FMVSS 108. SAE J583 fog lamp standard. Replaces factory halogen H11 bulbs. 2 bulbs per set.",
  "sku": "AUX-F16-H11-6K",
  "mpn": "F16-H11",
  "brand": { "@type": "Brand", "name": "Auxbeam" },
  "legalDisclaimer": "DOT compliant for road use in the United States and Canada when used as fog lights. Check local and state regulations before installation. Not approved for headlight main beam (high/low beam) replacement without DOT headlamp certification. Off-road use only for non-DOT products.",
  "hasCertification": [
    {
      "@type": "Certification",
      "name": "DOT Compliant — FMVSS 108",
      "issuedBy": {
        "@type": "Organization",
        "name": "U.S. Department of Transportation — NHTSA",
        "url": "https://www.nhtsa.gov"
      },
      "certificationIdentification": "FMVSS 108",
      "description": "Federal Motor Vehicle Safety Standard 108 — Lamps, Reflective Devices, and Associated Equipment. DOT marking stamped on lens. Required for all road-legal exterior lighting in the United States."
    },
    {
      "@type": "Certification",
      "name": "SAE J583 — Front Fog Lamp",
      "issuedBy": {
        "@type": "Organization",
        "name": "SAE International",
        "url": "https://www.sae.org"
      },
      "certificationIdentification": "SAE J583",
      "description": "SAE J583 — Front Fog Lamps. Governs photometric output, beam pattern, color, and lens marking requirements for front fog lamps. SAE marking: 'F' on lens."
    },
    {
      "@type": "Certification",
      "name": "CE Marking",
      "issuedBy": {
        "@type": "Organization",
        "name": "European Commission",
        "url": "https://ec.europa.eu"
      },
      "description": "CE marking for EU market. Note: EU market requires ECE R19 (front fog lamps) rather than DOT/SAE — confirm regional certification before sale."
    }
  ],
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "fitmentType", "value": "Semi-Universal Fit", "description": "Fits all vehicles with H11, H8, or H9 fog light socket. Covers a wide range of domestic and import vehicles 2005+. Verify socket type in vehicle owner manual or use fitment guide." },
    { "@type": "PropertyValue", "name": "bulbSocket", "value": "H11 / H8 / H9", "description": "Single-filament halogen socket. H11 is the most common North American fog light socket. H8 and H9 are physically identical and interchangeable." },
    { "@type": "PropertyValue", "name": "installationType", "value": "Plug-and-Play", "description": "Direct socket replacement — unplug factory halogen, insert LED, lock connector. No resistors or decoders required for most vehicles. Some European vehicles require CAN-bus decoder (sold separately) to prevent error codes." },
    { "@type": "PropertyValue", "name": "colorTemperatureK", "value": "6000", "unitCode": "KEL", "description": "6000K xenon-white. Appears bright white with a slight blue tint. 3000K (golden/yellow) version available for improved fog penetration — yellow light scatters less in fog, rain, and snow." },
    { "@type": "PropertyValue", "name": "lumensOutput", "value": "6000", "unitCode": "LUM", "description": "6000 lumens per pair (3000 lm per bulb). Compared to factory halogen H11 (~1350 lm): approximately 4× brighter. Over-driven lumens may exceed DOT beam pattern limits — DOT compliance certification accounts for this." },
    { "@type": "PropertyValue", "name": "voltageInput", "value": "12", "unitCode": "VLT", "description": "12V DC automotive. Also operates on 24V DC (trucks) — voltage range 9V–32V DC." },
    { "@type": "PropertyValue", "name": "powerDraw", "value": "0.6", "unitCode": "AMP", "description": "0.6A per bulb at 12V (7.2W). Lower than factory halogen (~55W). No fuse upgrade required." },
    { "@type": "PropertyValue", "name": "coolingType", "value": "Active fan cooling", "description": "Built-in aluminum heat sink with cooling fan. Fan noise is inaudible from inside vehicle cabin." }
  ]
}

SAE Lighting Standard Reference

Seat Covers — Airbag Compatibility as a Safety-Critical Attribute

Side-curtain airbag compatibility is the most safety-critical attribute in the seat cover category. Most passenger vehicles manufactured after 2005 include side-seat airbags that deploy through the seat bolster. A seat cover that wraps tightly around the seat bolster can physically obstruct airbag deployment, turning a life-saving system into a hazard. This attribute must be structured — an unstructured mention in a product description paragraph is insufficient for AI agent safety filtering.

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Covercraft SeatSaver Front Row Seat Covers — 2019-2023 Ford F-150, Polycotton, Grey",
  "description": "Covercraft SeatSaver front row seat covers for 2019-2023 Ford F-150 (all cab configurations). Custom-fit to F-150 XL/XLT/Lariat front bench or bucket seat. Polycotton canvas fabric. Airbag compatible — side-curtain airbag seam allows unobstructed deployment. Does NOT fit seats with integrated rear-facing child seat (LATCH-equipped center position on SuperCrew bench).",
  "sku": "SS3498PCCH",
  "mpn": "SS3498PCCH",
  "brand": { "@type": "Brand", "name": "Covercraft" },
  "safetyConsideration": "Side-seat airbag compatible. Seat cover seam is engineered to split and allow airbag deployment without obstruction. If your F-150 has side-curtain airbags (all 2019-2023 F-150 models), verify airbag compatibility before installing any seat cover. Covers that obstruct side airbags are a serious safety hazard — reference FMVSS 208 (Occupant Crash Protection). Check your vehicle owner manual for airbag locations.",
  "compatibleWith": [
    {
      "@type": "Vehicle",
      "name": "2019-2023 Ford F-150 (all cab types)",
      "vehicleModelDate": "2019-2023",
      "brand": { "@type": "Brand", "name": "Ford" },
      "model": "F-150",
      "bodyType": "Pickup",
      "description": "Fits 2019, 2020, 2021, 2022, and 2023 Ford F-150 — Regular Cab, SuperCab, and SuperCrew, all trim levels (XL, XLT, Lariat, King Ranch, Platinum, Limited). Does NOT fit F-150 Lightning (EV — different seat design). Does NOT fit F-150 Raptor (sport seats with integrated bolsters). Front row only."
    }
  ],
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "fitmentType", "value": "Direct Fit", "description": "Custom-fit for specific Year/Make/Model. Laser-cut pattern matched to Ford F-150 seat contours." },
    { "@type": "PropertyValue", "name": "seatType", "value": "Custom-Fit", "description": "Vehicle-specific pattern. Not a universal or semi-custom cover." },
    { "@type": "PropertyValue", "name": "seatCompatibility", "value": "Bucket seats and 40/20/40 split bench", "description": "Fits factory F-150 front bucket seats and 40/20/40 split bench configuration. Separate covers for each position — driver, center console/armrest section, passenger." },
    { "@type": "PropertyValue", "name": "airbagCompatible", "value": "true", "description": "Side-seat airbag compatible. Engineered seam allows airbag to deploy without obstruction. Tested per FMVSS 208 passive restraint guidelines. SAE seam specification for airbag-compatible seat covers." },
    { "@type": "PropertyValue", "name": "installationType", "value": "Plug-and-Play", "description": "No tools required. Slips over seat headrests and tucks into seat crevices with integrated straps and hooks. Installation: 15-20 minutes per seat." },
    { "@type": "PropertyValue", "name": "materialType", "value": "Polycotton Canvas", "description": "Polycotton canvas — durable, breathable, machine washable. Ideal for work trucks. Not waterproof. For waterproof option: Covercraft SeatSaver Carhartt Brown (neoprene-backed)." },
    { "@type": "PropertyValue", "name": "headrestCover", "value": "Included", "description": "Headrest covers included and matched to seat cover pattern." }
  ]
}

Roof Racks and Cargo Carriers — Load Capacity Schema

Roof rack structured data requires two distinct weight ratings: static (parked) and dynamic (while driving). These are not interchangeable. A roof rack rated for 165 lbs static may only carry 100–110 lbs dynamic. Most Thule and Yakima rack systems follow this 60–65% dynamic-to-static ratio. Additionally, roof rack fitment depends on the vehicle's roof type — bare roof, raised rails, flush rails, fixed points, or T-track — which is itself a compatibility attribute that must be structured.

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Thule WingBar Edge 9595 Flush Roof Rack System — 2020-2024 Subaru Outback",
  "description": "Thule WingBar Edge roof rack for 2020-2024 Subaru Outback (flush factory rails). Aerodynamic wing profile — 30% less wind noise than square bars. Black powder-coat aluminum. T-track channel compatible with all Thule T-slot accessories. Dynamic load capacity: 165 lbs (75 kg). Static load: up to 330 lbs (150 kg) when parked. Key-locking for security.",
  "sku": "TH9595B-KIT",
  "mpn": "9595B",
  "brand": { "@type": "Brand", "name": "Thule" },
  "compatibleWith": [
    {
      "@type": "Vehicle",
      "name": "2020-2024 Subaru Outback (flush factory roof rails)",
      "vehicleModelDate": "2020-2024",
      "brand": { "@type": "Brand", "name": "Subaru" },
      "model": "Outback",
      "bodyType": "Wagon",
      "description": "Fits 2020, 2021, 2022, 2023, 2024 Subaru Outback (6th Generation BT) with factory flush roof rails. Does NOT fit Outback models without roof rails — requires separate foot pack (Thule 7105 AeroFoot) for bare roof installation."
    }
  ],
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "fitmentType", "value": "Direct Fit", "description": "Requires vehicle-specific fit kit matched to Subaru Outback flush factory rails. Not a universal rack." },
    { "@type": "PropertyValue", "name": "compatibleRoofType", "value": "Flush Rails", "description": "Attaches to flush (integrated) factory roof rails. NOT compatible with raised rails (round-bar style), bare roof (no rails), or fixed points. For raised rails: Thule SquareBar Evo (7124). For bare roof: requires Thule fit kit with foot pack." },
    { "@type": "PropertyValue", "name": "installationType", "value": "Bolt-On", "description": "Clamps onto factory flush rails using Thule click-fit mounting. No drilling required for flush-rail installation. Security key lock included. Installation: 30-45 minutes." },
    { "@type": "PropertyValue", "name": "maxLoadCapacity", "value": "75", "unitCode": "KGM", "description": "75 kg (165 lbs) maximum dynamic load while driving. Do not exceed vehicle manufacturer's roof load rating (check owner manual — Outback roof rating varies by trim). Static load (parked): up to 150 kg (330 lbs)." },
    { "@type": "PropertyValue", "name": "dynamicLoadRating", "value": "75", "unitCode": "KGM", "description": "Dynamic load = weight allowed while vehicle is in motion. Always the limiting factor. Static load (parked) is typically 2× dynamic rating but should not be used as the driving limit." },
    { "@type": "PropertyValue", "name": "barProfile", "value": "Aerodynamic Wing (WingBar Edge)", "description": "Aerodynamic wing cross-section — 30% less wind drag and noise vs square bar cross-section at highway speeds. T-track channel for accessory compatibility." },
    { "@type": "PropertyValue", "name": "crossbarLength", "value": "118", "unitCode": "CMT", "description": "118 cm (46.5 inch) crossbar length — fits Subaru Outback roof width. Usable load surface between towers: approximately 95 cm." },
    { "@type": "PropertyValue", "name": "securityLock", "value": "Thule One-Key System", "description": "Key-locking crossbar ends. Compatible with Thule One-Key System (all Thule locks keyed alike with single kit, sold separately: TH450500)." },
    { "@type": "PropertyValue", "name": "materialType", "value": "Aluminum — black powder coat", "description": "Aluminum crossbar with UV-resistant black powder coat. Steel mounting brackets." }
  ]
}

Automotive Electronics Voltage Reference

The most common structured data error for car electronics is omitting the DC qualifier — 12V DC automotive is a completely different electrical standard from 12V AC (marine/RV) or 120V AC (household). Always specify DC and note the compatible vehicle electrical system.

Fitment Type Decision Matrix

Car Stereo DIN Standard — Head Unit Fitment

DIN (Deutsches Institut für Normung) defines the physical size standard for car audio head units. Single DIN and Double DIN are the two formats, and they are NOT interchangeable without a dash kit. This is the primary fitment standard for aftermarket head unit installation — it determines which stereos physically fit in a given vehicle's dashboard cavity.

• Single DIN (DIN 1) — 180mm × 50mm face. Standard in older vehicles and many commercial vehicles. JVC, Kenwood, Pioneer single-DIN units are 178mm wide × 50mm tall per ISO 7736 standard.
• Double DIN (DIN 2) — 180mm × 100mm face. Most modern infotainment replacement units. Android Auto / Apple CarPlay head units are nearly all Double DIN. ISO 7736 double size.
• 1.5 DIN — rare, 180mm × 75mm. Found in some older European vehicles (Volkswagen, Audi pre-MIB).

{
  "@type": "PropertyValue",
  "name": "dinStandard",
  "value": "Double DIN",
  "description": "Double DIN (DIN 2) — 178mm × 100mm (7 inch face unit). Fits vehicle dash cavities designed for Double DIN head units. Requires vehicle-specific dash kit and wiring harness adapter. See compatibleWith for dash kit options."
}

Always include the DIN standard in a separate additionalProperty — embedding "Double DIN" only in the product title means AI agents handling "double DIN head unit for 2018 Tacoma" cannot filter by DIN standard without structured data.

Dawn Liquid Snippet: auto.* Metafield Namespace

Save as snippets/auto-accessory-schema.liquid. Activates for products tagged automotive-accessory, car-accessory, dash-cam, floor-mats, seat-covers, or in the automotive collection.

{% comment %} auto-accessory-schema.liquid — automotive accessories structured data {% endcomment %}
{% assign is_auto = false %}
{% if product.tags contains 'automotive-accessory' or product.tags contains 'car-accessory' or product.tags contains 'dash-cam' or product.tags contains 'floor-mats' or product.tags contains 'seat-covers' or product.tags contains 'roof-rack' %}
  {% assign is_auto = true %}
{% endif %}
{% for collection in product.collections %}
  {% if collection.handle == 'automotive' or collection.handle == 'car-accessories' or collection.handle == 'auto-accessories' %}
    {% assign is_auto = true %}
  {% endif %}
{% endfor %}

{% if is_auto %}
{% assign fitment_type    = product.metafields.auto.fitment_type %}
{% assign vehicle_make    = product.metafields.auto.vehicle_make %}
{% assign vehicle_model   = product.metafields.auto.vehicle_model %}
{% assign vehicle_years   = product.metafields.auto.vehicle_years %}
{% assign vehicle_trim    = product.metafields.auto.vehicle_trim %}
{% assign install_type    = product.metafields.auto.installation_type %}
{% assign voltage_input   = product.metafields.auto.voltage_input %}
{% assign material_type   = product.metafields.auto.material_type %}
{% assign airbag_compat   = product.metafields.auto.airbag_compatible %}
{% assign max_load_kg     = product.metafields.auto.max_load_capacity_kg %}
{% assign din_standard    = product.metafields.auto.din_standard %}
{% assign dot_compliant   = product.metafields.auto.dot_compliant %}
{% assign color_temp_k    = product.metafields.auto.color_temperature_k %}
{% assign legal_disc      = product.metafields.auto.legal_disclaimer %}

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": {{ product.title | json }},
  "description": {{ product.description | strip_html | truncatewords: 80 | json }},
  "url": "{{ shop.url }}{{ product.url }}",
  "sku": {{ product.selected_or_first_available_variant.sku | json }}
  {% if product.selected_or_first_available_variant.barcode != blank %}
  ,"gtin": {{ product.selected_or_first_available_variant.barcode | json }}
  {% endif %}
  {% if product.vendor != blank %}
  ,"brand": { "@type": "Brand", "name": {{ product.vendor | json }} }
  {% endif %}
  {% if legal_disc != blank %}
  ,"legalDisclaimer": {{ legal_disc | json }}
  {% endif %}
  {% if dot_compliant == "true" or dot_compliant == true %}
  ,"hasCertification": [
    { "@type": "Certification", "name": "DOT Compliant — FMVSS 108", "issuedBy": { "@type": "Organization", "name": "U.S. Department of Transportation — NHTSA", "url": "https://www.nhtsa.gov" }, "certificationIdentification": "FMVSS 108" }
  ]
  {% endif %}
  {% if fitment_type == "Direct Fit" and vehicle_make != blank and vehicle_model != blank and vehicle_years != blank %}
  ,"compatibleWith": [
    {
      "@type": "Vehicle",
      "name": {{ vehicle_years | append: " " | append: vehicle_make | append: " " | append: vehicle_model | json }},
      "vehicleModelDate": {{ vehicle_years | json }},
      "brand": { "@type": "Brand", "name": {{ vehicle_make | json }} },
      "model": {{ vehicle_model | json }}
      {% if vehicle_trim != blank %}
      ,"description": {{ "Trim: " | append: vehicle_trim | json }}
      {% endif %}
    }
  ]
  {% endif %}
  ,"additionalProperty": [
    {% assign ap_s = false %}
    {% if fitment_type != blank %}
    { "@type": "PropertyValue", "name": "fitmentType", "value": {{ fitment_type | json }} }
    {% assign ap_s = true %}
    {% endif %}
    {% if install_type != blank %}
    {% if ap_s %},{% endif %}{ "@type": "PropertyValue", "name": "installationType", "value": {{ install_type | json }} }
    {% assign ap_s = true %}
    {% endif %}
    {% if voltage_input != blank %}
    ,{ "@type": "PropertyValue", "name": "voltageInput", "value": {{ voltage_input | json }}, "unitCode": "VLT", "description": "DC automotive voltage — not household AC" }
    {% endif %}
    {% if material_type != blank %}
    ,{ "@type": "PropertyValue", "name": "materialType", "value": {{ material_type | json }} }
    {% endif %}
    {% if airbag_compat != blank %}
    ,{ "@type": "PropertyValue", "name": "airbagCompatible", "value": {{ airbag_compat | json }}, "description": "Side-seat airbag compatibility — safety-critical attribute for seat covers" }
    {% endif %}
    {% if max_load_kg != blank %}
    ,{ "@type": "PropertyValue", "name": "maxLoadCapacity", "value": {{ max_load_kg | json }}, "unitCode": "KGM", "description": "Dynamic load capacity (while driving). Static load capacity is typically 2× dynamic." }
    {% endif %}
    {% if din_standard != blank %}
    ,{ "@type": "PropertyValue", "name": "dinStandard", "value": {{ din_standard | json }}, "description": "DIN head unit size standard: Single DIN (180×50mm) or Double DIN (180×100mm)" }
    {% endif %}
    {% if color_temp_k != blank %}
    ,{ "@type": "PropertyValue", "name": "colorTemperatureK", "value": {{ color_temp_k | json }}, "unitCode": "KEL" }
    {% endif %}
  ]
  ,"offers": {
    "@type": "Offer",
    "price": {{ product.selected_or_first_available_variant.price | money_without_currency | json }},
    "priceCurrency": {{ cart.currency.iso_code | json }},
    "availability": {% if product.available %}"https://schema.org/InStock"{% else %}"https://schema.org/OutOfStock"{% endif %},
    "url": "{{ shop.url }}{{ product.url }}"
  }
}
</script>
{% endif %}

auto.* metafield namespace

5 Common Automotive Accessory Schema Mistakes

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