Dealer Inventory Syndication: How to Run It as a Car Dealer

How to set up dealer inventory syndication: step by step

Clean the record in your DMS and send it to one feed provider, which feeds Cars.com, CarGurus and Autotrader. Load the same VIN-keyed file into Google, Meta and TikTok catalogs, set sold cars to drop off automatically, and then turn the feed into video.

This is what each destination expects, according to the help pages we could open:

Destination	How the feed arrives	Format	Fields to get right	Sync or review time
Cars.com	Through your feed provider	The provider sends the site's format	Confirm with your Cars.com rep	Ask your rep
CarGurus	Through your feed provider	The provider sends the site's format	Confirm with your CarGurus rep	Ask your rep
Autotrader	Through your feed provider	The provider sends the site's format	Confirm with your Autotrader rep	Ask your rep
Google vehicle ads	Merchant Center	File, Google Sheet or Merchant API, with exact headers	Price matching the VDP, mileage with unit, store_code inside vehicle_fulfillment, image_link	24 to 48 hours after each submit
Meta catalog (AIA)	Commerce Manager	CSV, TSV, RSS XML or ATOM XML	Not listed in full on the pages we read; check Meta's field list	Your upload schedule
TikTok catalog	TikTok Ads Manager	CSV template	vehicle_id (up to 100 characters), price, mileage, image_link, state_of_vehicle, dealer address	Not stated on TikTok's field page

1. Clean every vehicle record in your DMS or website

Every destination copies your DMS or website inventory, so fix errors there and nowhere else. Check that each unit has its VIN, the price a shopper can pay, current mileage with the unit, condition (new, used or CPO), body style, exterior color and real photos. TikTok marks every one of those fields as required, so its list works as a checklist even if you never buy TikTok ads.

2. Send that record to one feed provider

A feed provider is a company that takes your inventory export and sends it to listing sites and ad platforms, each in its own format. Dealer Specialties says its feeds reach over 200 internet partners, including AutoTrader, Cars.com, CarGurus, Edmunds and TrueCar. HomeNet says it sends vehicle data and photos to thousands of online destinations in near real time.

DealerCenter says it feeds CarGurus, Autotrader, Craigslist, Cars.com and more, and it also names Facebook, OfferUp and Google Business Profile. If your store runs vAuto, ask your rep for its destination list. We did not review vAuto's feed documentation for this guide.

3. Ask Cars.com, CarGurus and Autotrader to switch on your provider's feed

Once you sign a listing package, each site still has to turn your provider's feed on for your dealer account. Tell each rep which provider you use, and ask them to confirm the field list and how often they process the file. Dealer Specialties says it can add a participating dealer to a feed within hours, and our CarGurus vs Cars.com comparison covers what those two sites cost.

4. Turn on Google vehicle ads in Merchant Center

In the United States, you can enable the Vehicle ads add-on directly in your Merchant Center account. Our Google vehicle ads setup guide covers activation and campaigns.

For the feed itself, Google says you must use the exact attribute headers. The store_code attribute goes inside vehicle_fulfillment, whose values are in_store or online. The feed price has to match your VDP exactly, and Google asks you to allow 24 to 48 hours after each update.

If your provider uses the Merchant API, it has to create the data source first and send price in amountMicros, where "1599000000" equals $1,599.

5. Build a Meta vehicle catalog for Automotive Inventory Ads

Meta catalogs accept CSV, TSV, RSS XML or ATOM XML, so ask your provider for a scheduled file in one of those formats. Our Facebook automotive inventory ads guide lists the required fields and pixel events.

This catalog is your only feed route to Marketplace. Meta's partner notice, as reposted on DealerRefresh, said Marketplace would stop showing vehicle listings from partner catalog feeds on September 13, 2021, while automotive inventory ads would keep running there. Our Marketplace guide covers Marketplace rules and manual posting.

6. Add a TikTok automotive inventory catalog

TikTok offers a CSV template. Its required fields are vehicle_id, title, description, url, make, model, year, mileage.value, mileage.unit, image_link, body_style, price, exterior_color and state_of_vehicle, plus the dealer's address, latitude and longitude. Write price as the amount followed by a space and the ISO currency code (USD), set mileage.unit to MI, use images of at least 500x500 pixels, and set state_of_vehicle to New, Used or CPO.

7. Make sold cars drop off every destination automatically

Mark each unit sold in your DMS on delivery day and let your provider's next send remove it everywhere. Deleting it by hand on each site leaves room for misses. Ask your provider whether each send replaces your whole inventory or only adds changes, because a sold VIN that never gets a removal record can stay live.

On Google, a car left in the feed after its VDP comes down can trigger a vehicle availability mismatch or landing page error and get disapproved.

8. Point the same feed at short-form video

A clean feed already has the photos, price and details a short video needs. Cars.com announced an AI VIN video product on April 27, 2026, after rolling out its first live campaign in March. It plugs into your existing Cars.com feed, makes videos as cars are added, removes them when cars sell, and runs them on TikTok, Instagram and Facebook.

Our Cars.com AI video explainer covers what that paid product includes. For posts on your own accounts, A21 Social reads your Cars.com and CarGurus listings and posts a short vertical video of each car to Instagram, Facebook, TikTok and YouTube.

How long does it take and what does it cost?

Connecting a feed takes anywhere from a few hours to a few days. You pay separately for the feed provider, each listing site's package and any inventory ad spend.

Dealer Specialties says it can add a dealer to a feed within hours, and Google asks you to allow 24 to 48 hours after each update. Apart from DealerCenter's $5 pass-through fee per Craigslist post, none of the feed provider pages we read lists a price.

Piece	Setup time the sources give	What you pay
Feed provider (Dealer Specialties, HomeNet, DealerCenter, vAuto)	Dealer Specialties: within hours	A quote; the only price on the provider pages we read is DealerCenter's $5 per Craigslist post
Cars.com, CarGurus, Autotrader	Depends on each site's account setup	A monthly listing package; see our CarGurus vs Cars.com cost comparison
Google vehicle ads	24 to 48 hours per update	Google Ads spend you set
Meta and TikTok inventory ads	Not stated on the pages we read	Ad spend you set
A21 Social video posting	No filming or editing	$49, $129 or $199 a month, plus applicable sales tax

Most of the ongoing work is checking error reports after each upload and fixing the cause in your DMS. One person can own that job, so budget their time along with the subscriptions.

Who should do this?

Every franchise or independent lot that lists cars online should send inventory through one feed provider, with one named person in charge of the feed and its error reports. At a franchise store that is usually the internet manager. At a small independent lot it is often the owner or the GM.

The feed covers listings and inventory ads. Video is a separate job, because someone has to turn each car into a clip and post it on every channel. With A21 Social, nobody on your team films or edits, and you don't need an agency. Its AI builds a short vertical video from each listing's photos and details and posts it to your Instagram, Facebook, TikTok and YouTube accounts, so the cars your feed puts on Cars.com or CarGurus also show up on your social channels.

A21 Social has limits. It imports listings from Cars.com and CarGurus only, so it won't pick up cars that are only on Autotrader or other sites. It also doesn't post to Facebook Marketplace, so that exposure still comes from paid AIA or from your salespeople.

Your next step is to confirm your feed is live on Cars.com or CarGurus, then choose a plan: Starter at $49, Pro at $129 or Enterprise at $199 a month, plus applicable sales tax.

Example: A used-car lot keeps its inventory in its DMS and sends it through a feed provider to CarGurus and Cars.com. It runs Meta AIA from the same feed. A21 Social reads the CarGurus listings and posts a video of each car to the store's own channels, while Marketplace reach comes from the paid AIA.

Common mistakes

Most rejected or stale listings happen because the feed and the vehicle detail page disagree on price, mileage, availability or VIN. Since mid-April 2026, Google shows each of those problems as a Merchant Center account issue and disapproves the vehicles affected.

Error	What triggers it	Fix
Price mismatch	The feed or structured data price differs from the VDP; Google says it must exactly match	Change the price in your DMS so the feed and the VDP pull the same number
Mileage mismatch	Feed mileage differs from the VDP; a gap of more than 3% can bring warnings or suspension	Correct the feed and the VDP together, resubmit by file or Merchant API, request a re-review, and include the unit
Vehicle availability mismatch or landing page error	A sold car is still in the feed, or the link doesn't reach the car's own VDP	Remove sold units through your DMS status; make sure your link_template, link or ads_redirect values point to the correct vehicle landing page
Condition or vehicle info mismatch (VIN, brand, model)	The feed and the VDP show different data	Fix the record in your DMS
Item missing required attribute	A required field is blank	Add the missing values
Ineligible for in-store vehicle fulfillment	In-store fulfillment isn't approved	Remove the vehicle_fulfillment attribute, or switch to online fulfillment with a blank store code
Pending initial policy review	Google hasn't yet evaluated your account for vehicle ads	Complete your business info, verify your phone and fix disapprovals
Vehicle image not valid	The image doesn't show the vehicle	Use an image_link that matches the vehicle

Mistakes outside Google:

• Expecting your partner feed to post free Marketplace listings. Per Meta's notice reposted on DealerRefresh, partner catalog feeds stopped feeding Marketplace on September 13, 2021.
• Sending TikTok a bare number for price. TikTok asks for the cost followed by a space and the ISO currency code.
• Renaming columns in a Google file. Google processes the data source only with its exact attribute headers.
• Reading the end of the CARS Rule as the end of pricing rules. After the January 27, 2025 ruling, Holland & Knight says dealers should still expect FTC scrutiny, especially together with state authorities.

How to check it worked

Check each destination's own dashboard. Look at Merchant Center 24 to 48 hours after your first upload, compare each listing site's live count with your DMS the day after go-live, and track video results in each social app's own stats every month.

What to measure	Where	When
Approved and disapproved vehicles, plus account issues	Google Merchant Center	24 to 48 hours after each upload
Live vehicle count compared with your DMS count	Cars.com, CarGurus and Autotrader dealer dashboards	The day after the feed goes live, then weekly
Sold cars still showing	Search each sold VIN on every site	The day after each delivery
Catalog items with errors	Meta Commerce Manager and your TikTok catalog	After the first scheduled upload
Video views, profile visits and link clicks	Instagram Insights, Meta Business Suite, TikTok Analytics, YouTube Studio	Monthly, compared with the month before
VDP visits from social and ads	Your website analytics	Monthly

Cars.com reports that in the 30 days from March 22 to April 22, 2026 of its feed-based video, dealership website visitors rose 35%, influenced foot traffic rose 45% and influenced vehicle sales rose 47%. Those are Cars.com's own figures for its paid product. Use them as a reference point, and judge your results by your own month-over-month numbers.

How we checked this guide

In November 2026 we read Google Merchant Center and Google Ads help pages, TikTok's automotive catalog help page, Cars.com's April 2026 release, feed provider pages from Dealer Specialties, HomeNet and DealerCenter, DataFeedWatch's guides, a Holland & Knight legal update and a DealerRefresh repost of Meta's notice. We could not open Cars.com's or Autotrader's own feed specs, CarGurus' feed requirements page or Meta's official vehicle catalog field list, so this guide gives no exact fields or refresh times for those destinations.

We did not review vAuto's feed documentation, and the Marketplace date comes from a dealer forum repost of Meta's notice, not from Meta directly. Every figure in this guide links to its source.

If your cars already appear on Cars.com or CarGurus, video is the easiest step to hand off. Try A21 Social, from $49 a month, and each of your listings gets a video on your own channels.