r/whatcarshouldIbuy for brand marketing: what AI answers cite and where we have posted
Across 66,986 AI answers we tracked, r/whatcarshouldIbuy threads were cited 187 times in 145 of them (Apr 3, 2026 to Oct 2, 2026), which ranks it #26 of the 138 subreddits cited 50 or more times. CommunityMentions has also placed 66 verified comments in r/whatcarshouldIbuy for fewer than 5 brands, starting Mar 2026.
187
AI citations of its threads
57
different threads cited
66
verified comments we placed
757,070
members at last check
How AI answers use r/whatcarshouldIbuy
| Engine | Citations | Share |
|---|---|---|
| Perplexity (Sonar) | 132 | 71% |
| Gemini (2.0 and 2.5 Flash) | 34 | 18% |
| OpenAI models (GPT-4o, GPT-5.1) | 21 | 11% |
| Question type | Citations | Share |
|---|---|---|
| Describing a problem | 86 | 46% |
| Comparing products or competitors | 62 | 33% |
| Looking for a product to buy | 39 | 21% |
The r/whatcarshouldIbuy threads AI answers cite most
| Thread (from its link) | Times cited |
|---|---|
| Suddenly need to buy a car are some services | 42 |
| What are some fees i should avoid when leasing a… | 9 |
| Is it normal to feel scared when purchasing a car… | 9 |
| Does anyone else feel anxious when buying a car… | 9 |
| How do i go about financing a used car | 8 |
These 5 threads account for 77 of the 187 citations.
Our verified comments in r/whatcarshouldIbuy
| Measure | Value |
|---|---|
| Verified comments placed | 66 |
| Brands they were placed for | fewer than 5 |
| First placement | Mar 24, 2026 |
| Busiest month | May 2026 (29 comments) |
| Median comments in the thread when we posted | 6 |
Reading the r/whatcarshouldIbuy numbers
Perplexity supplies the largest share of the citations (71%, 132 of 187), ahead of Gemini at 18%.
By question type, describing a problem accounts for 46% of the answers that cited r/whatcarshouldIbuy, then comparing products or competitors (33%) and looking for a product to buy (21%).
Citations are spread out: the most-cited thread accounts for 22% of them and the top three for 32%, out of 57 different threads.
Under 1% of the 531 comments we scanned in r/whatcarshouldIbuy contained a link, so a comment that names a brand without linking is the norm here.
Of 4,849 posts we sampled in r/whatcarshouldIbuy, 1% linked out to another site, so posts here are mostly text.
It is #151 of the 211 subreddits where we have placed 50 or more verified comments, 0.1% of all our verified Reddit comments, and #9 of the 12 car and auto subreddits listed on this site by that count.
The subreddit had about 757,070 members when we last checked it.
Before you post anything yourself, read the rules of r/whatcarshouldIbuy; moderators change them. For how these threads reach answers, see the AI search guide.
Frequently asked questions
Do AI answers cite r/whatcarshouldIbuy?
Yes. In 66,986 AI answers we tracked between Jan 9, 2026 and Oct 2, 2026, r/whatcarshouldIbuy threads were cited 187 times across 145 answers and 57 different threads.
How many comments has CommunityMentions placed in r/whatcarshouldIbuy?
66 verified comments for fewer than 5 brands, starting Mar 2026.
Similar car and auto subreddits
| Subreddit | AI citations | Our verified comments | Members |
|---|---|---|---|
| r/AutoTransport | 166 | 82 | 20,881 |
| r/350z | 139 | 105 | 61,013 |
| r/G37 | 128 | 98 | 59,015 |
| r/370z | 108 | 104 | 42,301 |
| r/askcarsales | 295 | under 50 | |
| r/CarLeasingHelp | 82 | 121 | 14,851 |
Related lists and guides
Method
Counts come from CommunityMentions' AI-answer tracking and delivery database; anything under 50 shows as "under 50". The page text is generated from those counts. Full method.
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