Twelve domains in the top 100 hold no physical stock: autotrader.co.uk, theaa.com, rac.co.uk, carwow.co.uk, motability.co.uk, parkers.co.uk, pistonheads.com, cargurus.co.uk, exchangeandmart.co.uk, heycar.com, buyacar.co.uk and uk-car-discount.co.uk. All twelve lost visibility. Pooled, they fell from 24,472,567 to 21,019,033, down 3,453,534 visits or 14.11%, with a brand-level mean of -35.01%. Those 3,453,534 lost visits are 74.83% of the sector’s entire 4,614,992 decline. Add flagged motors.co.uk and the count is 13 of 13 negative.
Twelve domains all moving the same way with no exceptions points to something changing at SERP level rather than twelve separate content or technical problems. The queries these sites were built around — “used cars for sale”, “car valuation”, model-level review and comparison terms, part-exchange questions — are the query types where Google now answers on the results page itself through an AI Overview, an expanded knowledge panel or Vehicle Listing rich results. Google switched AI Mode on in the UK on 28 July 2025, the first month of this comparison window. Bauer’s global audience director Stuart Forrest described the specifications problem plainly: Parkers publishes data across tens of thousands of makes, models and derivatives that Bauer licenses in from third parties, and more than 60% of Bauer’s website traffic arrives through organic search. parkers.co.uk fell 39.02%.
Commercial condition explains part of the table too. Volkswagen Financial Services wound heycar down in Great Britain during 2025 and heycar.com fell 57.87%. BuyaCar stopped selling used cars in 2022 and moved to lead generation, and buyacar.co.uk is now the largest rank faller in the index, down 47 places.
| Domain |
What it does |
YoY change |
| autotrader.co.uk |
National used-car marketplace |
-8.43% |
| pistonheads.com |
Enthusiast editorial and classifieds |
-29.78% |
| parkers.co.uk |
Reviews, specifications and valuations |
-39.02% |
| cargurus.co.uk |
Listings aggregator with price analysis |
-54.87% |
| heycar.com |
Curated used-car marketplace |
-57.87% |
| buyacar.co.uk |
Used-car lead generation and finance |
-81.25% |
| 12 non-stockholding domains, pooled |
24,472,567 to 21,019,033 |
-14.11% |