Coastr vs Rentsyst:Which is more popular?
In September 2026, Rentsyst had more branded searches than Coastr among car rental software worldwide. Rentsyst had about 1,900 branded searches, while Coastr had 1,000. Rentsyst made up 11.9% of all car rental software searches we track, and Coastr accounted for 6.3%. When we asked ChatGPT and Google AI Overviews about car rental software, Rentsyst appeared in four of the five answers and Coastr in two. Rentsyst was mentioned before Coastr in every answer that named either.
Who do people search for more?
Rentsyst, about 90% more searches than Coastr
Who does AI mention more?
Rentsyst, mentioned in 4 of 5 answers, Coastr in 2
Who does AI recommend more?
Rentsyst, named ahead of Coastr in 4 of 4 answers
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Top car rental software in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Rentsyst was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Coastr was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Rentsyst was listed before Coastr in every answer that named either.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
HQ Rental Software1st- Rentsyst2nd
RentALL3rd
Nomora4th
Coastr5th
Rent Centric6th
TSD–
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- HQ Rental Software5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Rentsyst4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Nomora3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- RentALL3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Coastr2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Rent Centric1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- TSD0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about car rental software
5 answers
Asked ChatGPT
“Which car rental software should I use?”
Asked ChatGPT
“What are the best car rental software options?”
Asked ChatGPT
“What's the best car rental software for a small rental fleet?”
Searched Google, AI Overview
“car rental software”
Searched Google, AI Overview
“car rental management software”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 22, 2026.
Is Coastr or Rentsyst more popular in search?
This chart shows how often people search Google for Coastr and Rentsyst by name. Each line represents a brand's share of searches for all seven car rental software we track, month by month, from English-language searches worldwide.
Share of searches by month for Rentsyst, Coastr. The figures are in the table below the chart.
View monthly share of searches table
| Month | TSD | Nomora | Rent Centric | Rentsyst | HQ Rental Software | Coastr | RentALL |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 40.8% | 6.7% | 18.1% | 14.4% | 9.8% | 7.6% | 2.6% |
| Nov 2025 | 36.1% | 19.4% | 16.1% | 10.7% | 8.7% | 6.7% | 2.3% |
| Dec 2025 | 44.1% | 8.7% | 19.4% | 10.7% | 8.7% | 5.9% | 2.5% |
| Jan 2026 | 38.9% | 7.2% | 20.9% | 11.5% | 11.5% | 7.2% | 2.7% |
| Feb 2026 | 41.1% | 7.6% | 18.3% | 9.9% | 12.2% | 7.6% | 3.3% |
| Mar 2026 | 38.8% | 7.2% | 20.8% | 11.5% | 11.5% | 7.2% | 3.1% |
| Apr 2026 | 39.2% | 7.3% | 21% | 11.6% | 11.6% | 6.4% | 2.9% |
| May 2026 | 39.9% | 7.4% | 21.4% | 9.6% | 11.8% | 7.4% | 2.4% |
| Jun 2026 | 38.4% | 20.9% | 16.9% | 7.6% | 9.3% | 5.1% | 1.8% |
| Jul 2026 | 34.5% | 15.3% | 18.5% | 12.1% | 12.1% | 5.6% | 1.7% |
| Aug 2026 | 34.3% | 15.3% | 22.9% | 10.2% | 10.2% | 5.6% | 1.6% |
| Sep 2026 | 33.9% | 18.2% | 18.2% | 11.9% | 10% | 6.3% | 1.6% |
How has the Coastr and Rentsyst comparison changed over the last 12 months?
3 findings
- Rentsyst was ahead of Coastr in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Coastr’s share of searches among car rental software worldwide moved from 7.6% to 6.3%, and its estimated monthly branded searches held steady at 1K.
- Across the 12 months ending September 2026, Rentsyst’s share of searches among car rental software worldwide moved from 14.4% to 11.9%, and its estimated monthly branded searches held steady at 1.9K.
How did search popularity change for car rental software worldwide in September 2026?
2 changes
In September 2026, Rentsyst overtook HQ Rental Software to rank 4th among car rental software worldwide, with 11.9% of the searches.
In September 2026, Coastr gained share of searches among car rental software worldwide, from 5.6% to 6.3%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Coastr’s and Rentsyst’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Other head-to-heads among car rental software
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