Answers customers, sells and gives you your time back
WhatsApp chatbot for used car dealers in Brazil (2026)
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
Whoever messages about a used car messaged three other lots at the same time. The agent answers first, confirms whether the car is still on the lot and schedules the visit, while you close with whoever is in the store.
See the AI agent demos.
What is the best WhatsApp chatbot for used car dealers in Brazil?
The best WhatsApp chatbot for used car dealers in Brazil is the one that answers on the number the dealer already uses, with the business rules written by you. A WhatsApp AI agent for a used car dealer is CertuAI's automated assistant that answers year, mileage and options from each car's entry, flags when a vehicle has already left and offers another with the same profile, notes the used car the customer wants to trade in and books the lot visit.
Summary in 7 facts
- Whoever messages about a used car messaged three other lots at the same time.
- The agent answers first, confirms whether the car is still on the lot and schedules the visit, while you close with whoever is in the store.
- See the AI agent demos.
- The best WhatsApp chatbot for used car dealers in Brazil is the one that answers on the number the dealer 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 a used car lot before and after the Certu 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 a used car dealer 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 a used car lot before and after the Certu Agent.
TodayA message about the advertised car goes unanswered while the salesperson is with a customer on the lot
With CertuAIThe agent answers right away and schedules the visit, without interrupting whoever is closing a deal
TodayThe same question about mileage and options answered thirty times a day
With CertuAIAnswered on its own, from the entry for each car you set up
TodaySomeone interested in a trade-in tells everything by phone and the information gets lost
With CertuAIModel, year and mileage logged in the conversation, ready for your team's appraisal
TodayA lead from a listing site ends up scattered across old conversations
With CertuAIEach conversation becomes a contact and a deal in the CRM, with the full history
What does a conversation handled by the AI look like?
Example conversation
Used car dealer AI agent
Customer: Do you take my used car as a trade-in?
AI agent: Tell me which car you want to trade in and how much you plan to put down. I'll log everything for the salesperson.
Customer: Can I see the car today? What time are you open until?
AI agent: We are open until your closing time. Today I have your open slots for you to see the car.
Is an AI agent or manual customer service better for used car dealers?
The agent wins at repetitive tasks, and people keep winning at what takes judgment. With manual service someone at the lot has to stop what they are doing; with the Certu Agent the answer goes out on its own and you join the conversation whenever you want.
| Aspect | The manual way | With the CertuAI agent |
|---|---|---|
| First reply to someone interested from the ad | Depends on someone being free, and whoever answers first usually gets the visit | Answered in seconds, at any hour of the day |
| Questions about mileage, year and options | Repeated for each interested person, one by one | Answered on their own, from the entry for each car you set up |
| Interest in trading in a car | Told over the phone and jotted down on paper | Model, year and mileage logged in the conversation for your team to appraise |
| Lot visit scheduling | Agreed from memory, with no confirmation | Logged with a time and a reminder the day before |
| A car that has already sold and is still advertised | Creates a lost conversation and a frustrated customer | The agent says it is gone and already offers another with the same profile |
What does the WhatsApp agent do for used car dealers?
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.
Answers to ad questions
Year, mileage, options and terms, from the entry for each car you set up.
Availability confirmation
If the car has already left, the agent says so and offers another with the same profile and price range.
Answers about provenance
Inspection report, number of owners, outstanding debts and the dealer's warranty, exactly as you logged them for each vehicle.
Trade-in and financing qualification
Logs the car the customer wants to trade in and the down payment they plan, before it reaches the salesperson.
Visit and test drive scheduling
Time confirmed in the conversation, with a reminder the day before to reduce no-shows.
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 a used car lot no longer depend on you having your phone in hand.
How does the agent start answering customers at the used car lot?
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 used car dealers?
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 the agent, connect WhatsApp and see it working at the used car lot.
Create my agentWhat needs to be ready before turning on the agent at the used car lot?
The agent answers what is written, and nothing beyond that. Have these points defined before you connect WhatsApp.
- The entry for each advertised car: year, version, mileage, options and the price in the ad
- What you state about provenance: inspection report, number of owners, outstanding debts and the warranty the dealer gives
- The financing rule: which banks you work with, the minimum down payment and what the agent can say about installments
- How trade-ins work: what the dealer accepts, what it never accepts and the note that the appraisal is done in person
- How often the list of cars is updated and who flags when a vehicle leaves
Whether the agent offers another car with the same profile when the advertised one has already left, or just says so and hands the conversation to the salesperson.
The most common mistake: Letting the agent quote a down payment and installments without a written rule. A simulation depends on the bank, term and credit analysis, and the number said in the conversation becomes an argument at closing. Read how to fix this.
Frequently asked questions from used car dealers
Does it answer questions about the inspection report and the car's history?
It answers what you log vehicle by vehicle: pre-purchase inspection report, number of owners, outstanding debts and the dealer's warranty. Whatever is not written down it passes along, instead of taking a risk.
Does it appraise the car the customer wants to trade in?
No. It logs the model, year and mileage the customer provides and passes them to your team. The appraisal stays in person and stays yours.
Does it work with ads on several listing sites?
Yes. It does not matter where the message came from, the agent answers on your WhatsApp and logs the lead with the source you configure.
Do I have to update the inventory by hand?
You keep the list of cars in the Brain, the agent's knowledge base, and update it when a vehicle arrives on or leaves the lot.
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
Whoever asks about a used car has asked at three other lots. The agent answers year, mileage and options, schedules the lot visit and logs the trade-in 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