Answers customers, sells and gives you your time back
A WhatsApp chatbot for car rental companies in Brazil that serves customers on its own
What CertuAI measured on the WhatsApp of 67 businesses
Across the 67 businesses that answer with CertuAI's AI, 32.5% of the 122,720 customer messages arrived outside Monday to Friday, 8 a.m. to 6 p.m. (July 30 to September 30, 2026). Half of the AI's replies went out within 11.7 seconds, and 9 in 10 within 20.7 seconds (38,908 replies). 34.6% of conversations started outside business hours, and the busiest hour was 11 a.m.
| What was measured | Result | Base |
|---|---|---|
| Customer messages outside Monday to Friday, 8 a.m. to 6 p.m. | 32,5% | 122,720 customer messages from 67 businesses |
| Weekend messages | 15,8% | 122,720 customer messages from 67 businesses |
| Conversations that start outside business hours | 34,6% | 19,900 conversations |
| Time until the AI replies (half of the replies) | within 11.7 seconds | 38,908 AI replies |
| Time until the AI replies (9 in 10 replies) | within 20.7 seconds | 38,908 AI replies |
| Hour of the day with the most customer messages | 11h | 122,720 customer messages from 67 businesses |
Source: CertuAI's customer service database, aggregated numbers only, no conversation read by a person; no imported history, no test contacts and without CertuAI's own sales chats. July 30 to September 30, 2026, measured on Oct 9, 2026. Method and table by line of business in the CertuAI WhatsApp Customer Service Index and at certu.com.br/dados.
Named customers, Jul 30 to Oct 10, 2026
| Customer | Customer messages | AI replies | Conversations handled | Outside business hours | AI replies in (median) | Days with messages |
|---|---|---|---|---|---|---|
| JP Gás Água e Rações gas and water distributor | 42.832 | 23.351 | 6.479 | 33,6% | 9,8 s | 70 |
| CEMIP medical clinic | 12.472 | 6.484 | 2.436 | 18,7% | 11,4 s | 37 |
| Nikiti Auto Center auto center | 4.912 | 3.548 | 900 | 19,5% | 14,4 s | 47 |
| Imobiliária Rodrigues & Ribeiro real estate agency | 6.090 | 2.759 | 823 | 33,2% | 18,4 s | 34 |
| Alpha RH human resources | 3.082 | 1.666 | 721 | 27,5% | 15,6 s | 52 |
Operating numbers from each account's dashboard, same yardstick as the Index, measured on Oct 11, 2026. Published with each owner's permission. Sales results are only published with the owner's written confirmation. Full list at certu.com.br/casos.
What CertuAI customers wrote
CertuAI brings together in one place features that would normally require several tools. Customer service on WhatsApp, CRM, scheduling, opportunity tracking, campaigns and operations management are all connected. Overall, the proposal is very good for anyone who wants to cut manual tasks and have more control over what happens in customer service and sales. [...]
Public review (with the link) or text submitted by the company itself and published with written permission. The rating only appears when the source has a rating.
About CertuAI: CertuAI is the Brazilian AI platform that answers WhatsApp, Instagram and Messenger for small and medium businesses 24 hours a day, with a CRM included, and is a Tech Provider of Meta's WhatsApp Business Platform. Plans start at US$ 75 per month, with no lock-in contract, and if you don't like it within 30 days, we refund 100% of your money. Create my agent
Someone who needs a car wants to know if one is available on the date, how much the daily rate is and what to bring. The agent answers availability, price, security deposit and requirements right away, at any hour.
See the AI agent demos.
What is the best WhatsApp chatbot for car rental companies in Brazil?
The best WhatsApp chatbot for car rental companies in Brazil is the one that answers on the number the rental company already uses, with the business rules written by you. A WhatsApp AI agent for a car rental company is CertuAI's automatic attendant. It confirms availability by category and date, answers daily rate, mileage allowance and protection, explains the security deposit, minimum age and required documents, and passes on the reservation with the agreed pickup date and time.
Summary in 7 facts
- Someone who needs a car wants to know if one is available on the date, how much the daily rate is and what to bring.
- The agent answers availability, price, security deposit and requirements right away, at any hour.
- See the AI agent demos.
- The best WhatsApp chatbot for car rental companies in Brazil is the one that answers on the number the rental company already uses, with the business rules written by you.
- What changes is who answers first: the message no longer waits for you and is answered right away.
- These are four everyday situations at the rental company before and after the CertuAI agent.
- The agent wins at repetitive tasks, and the person keeps winning at what takes judgment.
By the numbers
| Number | What it means |
|---|---|
| US$ 75 per month | The Start plan costs US$ 75 per month and already includes the WhatsApp agent, your business's Brain, the CRM, automatic follow-up and the AI assistants, which come with every paid plan. |
| US$ 120 per month | Pro costs US$ 120 per month and adds the landing page, the wallet and 10 people on the team instead of 5. |
What changes at the rental company with an AI agent?
What changes is who answers first: the message no longer waits for you and is answered right away. These are four everyday situations at the rental company before and after the CertuAI agent.
TodayCustomer asks if there's a car for the weekend and the reply arrives after they've already booked with another company
With CertuAIThe agent confirms availability on the date, answers the daily rate and passes on the reservation right away
TodayThe usual questions: how much is the security deposit? is there a minimum age? do you accept cards?
With CertuAIThe agent explains the deposit, requirements and payment methods before the customer wastes time, your way
TodayCustomer arrives for pickup without the right documents and the rental stalls at the counter
With CertuAIThe agent sends the list of documents and requirements before pickup, and the customer arrives ready
TodayDaily rate quote answered late and the customer disappeared
With CertuAIThe agent answers right away and follows up, reopening the conversation before the reservation is lost
What does a conversation handled by the AI look like?
Example conversation
Rental company AI agent
Customer: Is there a car available for the weekend?
AI agent: I'll check the category that's free on the date you want. What are the pickup day and the return day?
Customer: Does the security deposit hold my card limit?
AI agent: Yes. The deposit is held against the driver's card limit, in the amount of your price.
Is an AI agent or manual service worth more for car rental companies?
The agent wins on repeated tasks, and the person keeps winning on what takes judgment. With manual service someone at the rental company has to stop what they're doing; with the CertuAI agent the reply goes out on its own and you step into the conversation whenever you want.
| Aspect | The manual way | With the CertuAI agent |
|---|---|---|
| Request for a car for Friday arriving at night | Answered the next day, when the customer has already booked with another company | The agent confirms the free category on the date and passes on the reservation right away |
| Explaining the security deposit | Repeated over the phone and half understood | Explained in writing, with the amount, the method and what it holds on the card |
| Age and license requirements | Found out at the counter, with the customer already on site | Answered beforehand, so whoever comes to pick up arrives within the rules |
| Documents for pickup | Depend on the attendant remembering to list them in every contact | Sent as a list, always the same, before pickup day |
| Return date | Chased only after the car is late | The agent reminds the customer beforehand, and the car goes back to the fleet on time |
What does the WhatsApp agent do for car rental companies?
It does the customer service that is yours today. You teach the business once in the Brain, CertuAI's knowledge base, and the agent answers clients your way, with your rules.
Availability check
Confirms whether the car or category is free on the date the customer wants, based on what you keep updated.
Daily rate, mileage allowance and protection
Price by category, mileage allowance, excess mileage charge and what the protection covers, all defined by you.
Security deposit and requirements
Explains the deposit amount and that it holds a limit on the driver's card, plus the minimum age and how long the driver must have held a license.
Reservation and pickup scheduling
Passes on the reservation and arranges the pickup and return date and time, within your rules.
Return reminder
Lets the customer know before the return date, which cuts down on late returns and gets the car back to the fleet on time.
What questions do clients send on WhatsApp?
They are always the same, and the agent answers each one on its own. These everyday messages at the rental company no longer depend on you having your phone in hand.
How does the agent start serving customers at the rental company?
In three steps, on the same day. No installation, no code and no changing the number clients already know.
Teach your business
In one conversation, you explain catalog, prices, delivery, warranty, and rules, the way you would to a new employee.
The agent answers
It answers right away, logs every request and quote in the included CRM and follows up with people who went quiet.
How much does a WhatsApp AI agent cost for car rental companies?
The Start plan costs US$ 75 per month and already includes the WhatsApp agent, your business Brain, the CRM, automatic follow-up and AI assistants, which come with every paid plan. Pro costs US$ 120 per month and adds the landing page, the wallet and 10 people on the team instead of 5. No contract and no setup fee.
Get started now
Create my agentWhat needs to be ready before turning the agent on at the rental company?
The agent answers what is written, and nothing beyond that. Have these points defined before you connect WhatsApp.
- The fleet categories, with the daily rate for each and what changes on weekends, holidays and long rentals
- The amount and method of the security deposit, making clear that it holds a limit on the driver's card
- Minimum age, how long the driver must have held a license and who can be added as an additional driver
- The mileage allowance, the price of excess mileage and the fuel rule at return
- The protection included, what it covers and what is left to the customer
- Whether you allow the car to be used for ride-hailing apps, and the pickup and return regions
Whether the agent already holds the reservation in the calendar or only collects the details and your team confirms the spot in the fleet.
The most common mistake: Letting the agent confirm a free car by looking only at the fleet. Friday's availability depends on expected returns, and the same car promised twice becomes a reservation undone at the counter. Read how to solve this.
Frequently asked questions from car rental companies
Does the agent know whether the car is available on the date?
It answers from the availability you keep updated, by car or by category. Anything that needs checking goes to your team in the same conversation.
Does it explain the security deposit and requirements before pickup?
Yes. Deposit, minimum age, how long the driver has held a license and documents are answered ahead of time, so the customer arrives ready and the pickup doesn't stall at the counter.
Does it answer questions about using the car for ride-hailing apps?
It answers what you define, and it is worth defining, because the question comes up every week. If the rental company allows it, the agent explains the conditions; if it doesn't, it says so in the first message.
Does it close the rental on its own?
It takes the customer to the reservation and books the pickup. Signing the contract and handing over the car stay with you, at the counter.
In what other fields does the CertuAI agent work?
In any business that serves customers on WhatsApp, because the Brain is written by you. These fields have a day-to-day closest to yours.
Where can I read more about CertuAI's WhatsApp agent?
These pages explain the same agent from another angle: how it works, price, common questions and comparisons between platforms.
In short
Availability on the date, daily rate, security deposit and required documents answered right away, pickup arranged and each reservation logged as a task in the CRM.
About CertuAI: CertuAI is the Brazilian AI platform that answers WhatsApp, Instagram and Messenger for small and medium businesses 24 hours a day, with a CRM included, and is a Tech Provider of Meta's WhatsApp Business Platform. Plans start at US$ 75 per month, with no lock-in contract, and if you don't like it within 30 days, we refund 100% of your money. Create my agent