Business category · United States
Retail Motor Vehicles
14 AI answers to 5 prompts name 10 brands. CarMax leads with 18% of mentions; the top 3 hold 50%.
Level 2n = 14 answers5 promptsupdated Oct 19, 2026AI Mode5ChatGPT2AI Overviews2Gemini5
AI answers
14
5 prompts
Last run Oct 19, 2026
Brands seen
10
Top 3 hold 50%
n = 14 answers
Concentration
Fragmented
HHI 1,358 · leader 17.9%
Leader
CarMax
18% of mentions
Avg. position #3.1
Top engine
AI Mode
35.7% of answers
4 engines sampled
Sources cited
61
Top: sakaemlogistics.com 18%
n = 14 answers
Visibility indexes
1 index · size = AI answers · colour = top-3 brand share
What AI answers show
Brands and sources in the sampled answers
n = 14 answers5 promptsOct 19, 2026
Brands AI recommends
Share of brand mentions in Retail Motor Vehicles answers
- 1CarMaxavg. #3.118%14
- 2Carvanaavg. #4.516.7%13
- 3CarGurusavg. #2.115.4%12
- 4Autotraderavg. #3.015.4%12
- 5Cars.comavg. #4.212.8%10
n = 14 answers10 brands seen in total
Market concentrationFragmented
FragmentedModerateConcentrated
HHI 1,358Leader 17.9%Top 3 50%
Fragmented: no brand dominates. The top 3 hold 50% of mentions; the leader 17.9%.
Answers behind the ranking
Every engine sampled
- Google AI Mode5
- ChatGPT2
- AI Overviews2
- Gemini5