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What's the best emissions testing service?

A commercial recommendation prompt. We size how many people ask ChatGPT this from real search demand, then run it through ChatGPT to see which websites it recommends.

Est. people asking / mo
11K
CPC
$1.04
Total est. value / mo
$730
Common ways people ask this (10)
  • What's the best emissions testing process for first-time car owners?
  • What's the best emissions testing process for older vehicles?
  • What's the best emissions testing process for diesel vehicles?
  • What's the best emissions testing process for hybrid vehicles?
  • What's the best emissions testing process for electric vehicles?
  • What's the best emissions testing process for passing on the first try?
  • What's the best emissions testing process for required renewals?
  • What's the best emissions testing process for out-of-state vehicles?
  • What's the best emissions testing process for commercial vehicles?
  • What's the best emissions testing process for vehicles with a check engine light?

What ChatGPT actually answered

One of the 5 times we asked ChatGPT this, verbatim. The leaderboard below aggregates all 5 runs.

Websites ChatGPT recommends for this prompt

Aggregated across 5 runs (min 2/5 appearances). Estimated visits split the prompt's demand by rank. Sites matching the prompt's own brand are marked branded and excluded from the leaderboard.

RankWebsiteAppearsEst. visits / moEst. value / mo
1 epa.gov 5/5 226 $235
2 airnow.gov 5/5 136 $141
3 dmv.org 5/5 91 $94
4 cars.com 4/5 62 $64
5 smogtips.com 3/5 45 $47
6 nhtsa.gov 4/5 34 $35
7 state.gov 4/5 25 $25
8 carcare.org 2/5 19 $20
10 smogcheck.net 2/5 11 $11
11 mass.gov 4/5 9 $9
12 ny.gov 4/5 7 $7
13 illinois.gov 3/5 6 $5
14 transportation.gov 2/5 5 $4
15 edmunds.com 2/5 3 $3
16 gov.uk 2/5 3 $2
17 texas.gov 2/5 2 $2
18 ca.gov 2/5 2 $1
19 colorado.gov 2/5 1 $1
20 virginia.gov 2/5 1 $1
How is this estimated?

ChatGPT doesn't publish prompts, so we don't show logged conversations. We measure real demand for this topic from Google search volume, scale it to ChatGPT's user base (on average about 1 ChatGPT user for every 8 Google searchers, a ratio that varies by topic), and run the prompt through ChatGPT 5 times to record which websites it recommends and in what order. Estimated visits split that demand across the recommended sites by a click-through-by-rank curve. Every number is a modeled estimate, not measured analytics. Full methodology →