Sector

Digital agency for car parts retailers

A car parts marketing agency has to understand fitment before it understands adverts. Nobody buys a brake disc they cannot confirm fits their car. We build parts stores on Shopify, WooCommerce and Magento with reg lookup, TecDoc K-Type compatibility and clean product data, then push that catalogue to eBay, Amazon and Google Shopping.

45.7%
of cars on UK roads are over 10 years old; average car age 9.7 years (2025)
£17bn
value the UK aftermarket adds to the economy, supporting 339,000+ jobs

The demand is there. 45.7% of cars on UK roads are over ten years old and the average car is 9.7 years old, which is the parc that keeps the aftermarket worth around £17bn a year to the economy. Online, the category is led by Euro Car Parts and a long tail of OE specialists, marque specialists, aftermarket generalists and marketplace-first sellers. Margins are thin, returns are driven by mis-fitment, and acquisition is dominated by Google Shopping and the eBay compatibility filter.

Everything hangs off the catalogue. Supplier data arrives as TecDoc packages, MAM Autocat exports, spreadsheets and PDFs, with the same article under three supplier codes, OE numbers formatted four ways and no fitting-position criteria. We cleanse it: deduplicate SKUs, normalise part numbers, build OE-to-aftermarket-to-supersession tables, pull attributes from TecDoc or PIES for filters, and attach K-Types to every SKU. That one dataset then drives the web store, the eBay compatibility CSV, the Amazon fitment submission and the Google Merchant Center feed.

Reg lookup is where the buyer meets that data. A VRM goes to a licensed provider such as Vehicle Data Global (UKVD), cap hpi or One Auto API and comes back with make, model, derivative, engine code, build dates and a TecDoc K-Type. Often it comes back with several candidate K-Types, because DVLA holds no engine code and a 2.0 TDI can be a CBAB or a CBBB with different discs. We disambiguate with the engine code, VIN prefix or a single question to the customer, then show 'fits your car' with the criteria they need to confirm.

We have built this for Kitspares, a kit car parts retailer, and for Milner Off Road, whose Land Rover catalogue is split by chassis number and model year in ways no generic catalogue handles. Both are multichannel businesses where the store, eBay and the supplier feeds have to agree on stock every hour of the day. Linnworks, ChannelAdvisor and M2E Pro all sit comfortably in the stacks we run.

The usual problems

  • Returns and chargebacks from parts that almost fit

    A K-Type mapped to the wrong sibling variant, a missing left/right criterion or a chassis-number split nobody captured. Every one costs postage twice and a review.

  • Thousands of SKUs with three titles each

    Supplier feeds have duplicated the same article under different codes, attributes are blank and Google Shopping is disapproving lines for missing GTINs.

  • Stock on the website, eBay and Amazon never matches

    Oversells on the marketplace, out-of-stock lines still advertised on Shopping, and a Saturday spent reconciling by hand.

  • Supplier data arrives in five formats

    TecDoc for some brands, MAM exports for others, spreadsheets and PDFs for the rest. Nothing loads cleanly into the store.

  • Thin product pages that neither rank nor convert

    A part number, a price and a stock photo. No fitment, no OE cross-reference, no answer to the question the buyer typed into Google.

  • Marketplace fees and no customer of our own

    eBay and Amazon take the margin and keep the customer. The store gets no repeat business because nobody ever landed on it.

£18,564
paid for a Jaguar E-Type aluminium bonnet, the most expensive part sold on eBay UK in 2025

Car Parts Retailers: common questions

Which platform is best for a car parts website?

It depends on catalogue size and channels. Shopify suits stores under a few thousand SKUs that want fast checkout and apps. WooCommerce suits content-led stores on WordPress. Magento (Adobe Commerce) suits large catalogues, trade pricing and complex fitment. We build all three.

Can you add a number plate lookup to our existing store?

Yes. We integrate a licensed provider (Vehicle Data Global, cap hpi or One Auto API) with your store, return a K-Type from the VRM and filter the catalogue to that vehicle. Lookups are cached to control cost.

Where does fitment data come from?

TecDoc (TecAlliance) is the European standard and links articles to K-Type vehicle IDs. For brands without TecDoc coverage we build fitment tables from supplier data, OE catalogues and your own knowledge, then maintain them.

Can one catalogue feed the website, eBay, Amazon and Google Shopping?

That is the aim. A single cleansed product dataset with K-Types, GTINs and attributes generates the eBay compatibility file, the Amazon ACES submission and the Merchant Center feed, with stock and price synced on a schedule.

Do we need GTINs for every part?

Google and Amazon require or strongly prefer them. TecDoc carries GTINs at article level for many brands. For own-brand lines you should license a GS1 UK company prefix rather than buy resold barcodes.

Talk to the pit wall

Let's talk about your car parts retailers business

Tell us what you sell, fix, break or race and what is getting in the way. We will come back within one working day with a straight answer and, if it fits, a fixed-price scope.

Visitdijitul, 11 St John Street, Mansfield NG18 1QJ
We reply within one working day. No mailing lists, no hard sell.
Call 01623 650333 Get a quote