How to Use AI to Buy a Car: A New-Car Step-by-Step AI-to-Bid Playbook

Step 1: Tell AI What You Actually Need

It is not the best strategy to start with a broad question like "What is the best SUV?" The answer will likely be generic because the net is cast too wide. Instead, provide AI with enough context to focus its research and give you useful information about the tradeoffs between different vehicles. This allows you to use AI to narrow your choices and build a meaningful shortlist.

A better prompt would be: "I need a compact or midsize SUV under $40,000 before taxes and registration. I drive about 12,000 miles a year, mostly in the city but some on the highway. I usually carry two adults and two children and park in a tight garage. I want adaptive cruise control, good rear seat access, strong reliability and low fuel costs. Give me three models worth considering and explain the pros and cons of each."

It is also useful to include the following in your inquiry:

• Maximum budget
• New only or new and used
• Annual mileage
• City and highway driving mix
• Passenger and cargo needs
• Garage or parking constraints
• Must have safety and comfort features
• Fuel preference
• Climate
• Expected ownership period

It is important to understand that the goal is not to empower AI to make choices for you. The goal is to arm yourself with valuable information so you can turn your needs into a shortlist, then further narrow down those choices through your own investigation.

Step 2: Cut the Shortlist to Two or Three Cars

A list of ten models may feel comprehensive, but it can unnecessarily slow your decision making by overwhelming you with too much information. Instead, have AI rank your car candidates against your stated priorities so you can see the tradeoffs clearly.

For example, you could use a prompt like:

"Rank these three vehicles based on the following criteria: total purchase cost, fuel economy, rear seat access, garage friendliness and highway comfort. Explain where each vehicle is strongest and weakest, but do not make any recommendations until you have shown me all the tradeoffs."

At this stage, pay close attention to why a model is considered a strong candidate in each category that matters most to you. If you notice that a particular feature is consistently driving a vehicle's position on the list, verify whether that feature actually comes standard on the trim you can afford.

Step 3: Compare Exact Trims, Not Just Model Names

Comparing models like "RAV4 vs. CR-V" is not as useful as comparing specific trims. Trim levels can significantly change equipment, wheels, powertrains, driver assistance features, other available features and price. For a more meaningful comparison, compare vehicles at the trim-to-trim level.

Your prompt could look something like this.

Prompt: "Compare the current model year on a trim-to-trim basis by juxtaposing [Model A / Trim A] with [Model B / Trim B]. Use manufacturer specifications as much as possible. Show MSRP, powertrain, key driver assistance features, cargo capacity, wheel size, heated seat availability and any package required for the features I listed. Flag anything you cannot verify."

Once you have the results, check the manufacturer's current website or window sticker information for the items that matter most to you. Ask AI to provide the sources and links so you can verify the information yourself.

AI can organize the data for comparison and rank results based on your input and preferences, but it should not be your only source. Your own cross verification provides an important check, especially for specifications or features that could materially affect your decision.

Step 4: Research the Market Price, but Ask for the Right Numbers

Now ask AI to research current market pricing. Instead of asking for a "fair price," ask it to find competing offers and break down each offer into clearly defined prices, fees and incentives that you can compare across dealers.

You could use a prompt like this:

Prompt: "For a current model year [make/model/trim] in Zip Code [Zip], research the current MSRP, manufacturer incentives I may qualify for and recent public pricing references. Show the source and date for each incentive. Then give me two separate estimates:

• A vehicle price before government fees that includes mandatory dealer charges but excludes tax, title, registration and licensing.
• An estimated out-the-door total that adds those government charges.
• Flag any fee or incentive you cannot verify."

Why ask for both numbers? Because an out-the-door (OTD) price and a LetYouKnow Bid are not directly comparable. An OTD price includes government charges such as taxes, title, registration and licensing, while the LetYouKnow Bid is the price you submit before those government charges are added.

The FTC describes an OTD price as the total price of a vehicle, excluding financing, including taxes and fees. On LetYouKnow, your Bid includes all dealer and platform fees, while applicable government charges are added separately.

That distinction is important when you use AI to establish your bidding benchmark. You want to identify the best verified vehicle price you can find before government charges, not simply copy an AI generated OTD total into the Bid field. In other words, identify the best offer before taxes and other government fees and use it as your benchmark for bidding. Once your Bid is accepted, applicable government charges are added separately to arrive at your final out-the-door cost.

Step 5: Standardize Prices Before You Decide What to Bid

Derive and compare apples-to-apples prices before forming your bidding strategy.

If you already have a written OTD quote, you can make a few adjustments to turn it into a useful benchmark for your LetYouKnow Bid. Remove applicable taxes and other government charges, such as title and registration, from the OTD total. The remaining amount represents the offer before government fees.

That is the number you can use as your benchmark when deciding how much lower to Bid on LetYouKnow. Your Bid already includes all dealer and LetYouKnow platform fees, while applicable government charges are added separately.

Ask AI to help you make the calculation, then verify the numbers against your written quote yourself before submitting a lower Bid on LetYouKnow.

Step 6: Cross-Check AI Before Using Its Numbers

Spend a few minutes verifying the transaction details that could materially change the deal.

Check the manufacturer

Confirm:

• MSRP and destination charge
• Current incentives
• Your eligibility for each incentive
• Exact trim and packages

Cross-reference public pricing sources

Use one or more established pricing or marketplace sources to determine whether the AI generated range is plausible. Do not assume that third party sources use the same fees or assumptions when calculating "market value." Cross check the underlying figures and understand what is and is not included in each price.

Examine a written dealer quote

If you already have a written dealer quote, review it carefully. If you do not, it is good practice to request one from a local dealer. The FTC recommends getting the out the door price in writing before visiting a dealer. A written quote gives you a real world offer that you can use as a benchmark and helps you identify any additional charges included in the total.

Confirm the date

A valid incentive from last month may not be available today. Check that pricing, incentives and other time sensitive information are current. If AI cannot show where a number came from, treat it as an unverified estimate rather than part of your actual offer. Do not incorporate unverified figures into the price you consider your best available offer.

Step 7: Choose Your Bidding Strategy

Now it is time to decide what price you are willing to submit.

The most straightforward approach is to start with your best offer before taxes and other government fees, rather than an MSRP or an out-the-door total that includes taxes and registration.

For example, if your research suggests that $34,500 is a credible comparable offer before taxes and government fees, you can use that as your benchmark and Bid lower. If your Bid is accepted, you capture the difference between your best offer and your Bid.

How aggressive should you be?

That is a tradeoff. A lower Bid could produce greater savings if it is accepted. But the more aggressive your Bid, the greater the possibility that it will not be accepted. In a fast-moving market, inventory and market conditions can change, so a vehicle that was available when you submitted your Bid may no longer be available when you return to Bid again. A higher Bid is more likely to be accepted, but you may leave money on the table by not testing how low you could have gone.

There is no single optimal bidding strategy in a marketplace where some information is not visible to every participant. Your best approach depends on the quality of your research, the strength of your alternative offers and the supply and demand conditions affecting the vehicle you want. This is where good research gives you an advantage. If you know what comparable offers are available and have a credible fallback option, you can afford to Bid more aggressively. If your research suggests strong supply, multiple dealers competing for your business, or other signs that the market favors buyers, you may have more room to bid below your best available offer. The goal is not to guess the lowest possible price. It is to use your research to choose a Bid that gives you a meaningful opportunity to save while remaining comfortable with the possibility that it may not be accepted.

In short, use AI to understand the market, establish your best verified offer, assess the market conditions and then use that information to Bid less on LetYouKnow.

Step 8: Build the New Car on LetYouKnow

Use Price Bid, also known as the LetYouKnow® pricing tool, to submit your own price. Enter your Zip Code and select your search radius. If your Bid is accepted, your brand new car will be located at a matched franchise dealership within that radius. Then select the year, make, model, trim, colors, packages and options.

At this point, your AI research should already have done its job. You should know the exact:

• Make
• Model
• Trim
• Important options
• Acceptable geographic radius
• Comparable target price range

Armed with this information, you are ready to Bid. Do not use the Bid screen as the starting point for your research. Do your homework first, then use LetYouKnow to put that research to work.

Step 9: Submit Your Price and Understand the $799

Enter the price you want to pay and proceed to the checkout page to submit your Bid. If you already have a current offer, use it as your benchmark and Bid less with an instant result. When you submit a Price Bid, you provide the required payment information as part of the transaction flow.

You only pay the $799 nonrefundable service and reservation fee if your Bid is accepted. The $799 service and reservation fee serves as a prepayment toward your accepted Bid price and reserves your car at that price. It is already included in your accepted Bid price along with all dealer and platform fees and is not added on top.

This prepayment demonstrates serious buyer intent, supports the anonymous bidding process, and helps provide access to prices that may not otherwise be available. LetYouKnow's matching technology checks your Bid against confidential thresholds set by participating franchise dealerships for eligible new cars. You Bid anonymously and participating dealerships do not see your identity or contact information until your Bid is accepted. If your Bid is accepted, only the matched dealer receives your information so they can complete your vehicle purchase to your utmost satisfaction. You receive an instant result showing whether your Bid is a Match or No Match.

Step 10: If the Bid Is Accepted

If your Bid meets an eligible participating dealer's confidential threshold, LetYouKnow reveals your matched franchise dealership and your price is locked in. The nonrefundable $799 service and reservation fee has already been prepaid from your Bid, so it is not added on top of the accepted price. The remaining balance of your Bid, calculated as your accepted Bid minus the $799 fee, is due at the matched dealership, along with applicable government charges such as taxes, title and registration.

The $799 service and reservation fee demonstrates your serious commitment to the transaction and helps support the confidential bidding process that can make these offers available to you. Because the fee is a prepayment toward your accepted Bid, you are effectively paying part of your bid upfront rather than paying an additional charge on top of it. Your matched dealer holds your chosen new car at the locked-in accepted Bid price for up to 10 calendar days while you complete your purchase. The only charges added to your accepted Bid at signing are applicable government charges, such as taxes, title and registration, which are determined by your state and other applicable authorities, not the dealer. Any separate agreement you make with the dealership regarding financing, a trade in, add-ons, or other financial products is between you and the dealer.

Step 11: If the Bid Is Not Accepted

If your Bid is not accepted, there is no charge and no sale. You can adjust your Bid, change your car or search options and try again.

Use the result as information, but do not over interpret it. A No Match tells you only that your submitted Bid did not meet an eligible dealer's confidential threshold under those search conditions at that time. It does not reveal the dealer's threshold or tell you how far your Bid was from being accepted.

Possible next moves include:

• Increase your Bid.
• Widen your search radius or use a different Zip Code.
• Consider another trim.
• Change nonessential options.
• Compare an alternative model.

This is another point where AI can be useful. Ask it to help you evaluate which change would have the smallest impact on the features and priorities that matter most to you.

Step 12: Finish the Deal and Check the Paperwork

If your Bid is accepted, you will still need to complete the final purchase with the matched dealership. However, the price haggling process is over. You have secured your deal and it is time to complete the purchase with your matched dealer. The dealer can also help you review financing options and answer any questions you may have before completing the purchase.

A few items should be checked before you sign the paperwork.

• Confirm that the final paperwork reflects your remaining balance, which is your Bid amount minus the nonrefundable $799 service and reservation fee you have already prepaid to LetYouKnow.
• Make sure government fees are listed separately and that the paperwork clearly shows the total out-the-door price.
• Review the financing terms if you are borrowing money.
• Accept or decline optional products based on your needs.
• Confirm the exact vehicle and VIN provided by the dealer.
• Make sure any agreed upon delivery terms are documented.

These steps are important. The FTC's consumer guidance encourages consumers to carefully review the contract and make sure the final paperwork matches the price and terms they were given.

Pickup or Ship to Me

When the "Ship to Me" option is available on the checkout page, vehicle shipping is included in your Bid. There are no separate shipping fees and in some cases, shipping may be free. Otherwise, you will complete the transaction and pick up your vehicle at the participating dealership within the search radius you selected.

Do not assume that every dealer or every Bid qualifies for a shipping option. Check the delivery option shown on the final checkout page and read the applicable terms before submitting your Bid so you understand how the vehicle will be delivered.

Five AI Prompts Worth Saving

1. Build a Shortlist

Prompt: I need a new [vehicle type] under $[budget]. My driving is [description]. I need [must have features]. Give me three models, explain the tradeoffs and tell me which exact trims meet my requirements.

2. Compare the Trims

Prompt: Compare [Model/Trim A] and [Model/Trim B] for the current model year. Use manufacturer sources where possible. Show MSRP, powertrain, key safety features, cargo space, wheel size and the packages needed for my must have features. Flag anything you identify that is not verified.

3. Research Pricing

Prompt: For [vehicle/trim] in Zip Code [Zip], find the current MSRP, manufacturer incentives and public pricing references. Cite the source and date. Separate the vehicle or dealer price from an estimated out-the-door total by removing taxes and other government fees.

4. Make Dealer Quotes Easy to Compare

Prompt: Here is a written out the door quote: [paste quote]. Separate the vehicle price, mandatory dealer charges, government fees, optional products and financing items. Tell me which amount is most comparable with a LetYouKnow Bid that includes dealer or platform fees but excludes government fees.

5. Final Pre Bid Check

Prompt: Audit my plan before I place a Bid.

• Vehicle: [exact configuration]
• ZIP Code and radius: [details]
• Best verified comparable price before taxes and other government fees: $[amount]
• Proposed Bid: $[amount]

List any assumptions I should verify before I submit my Bid.

Common Mistakes to Avoid

Using an OTD Number as the Bid Without Adjusting for Government Fees

This is the biggest pricing mistake in the workflow. Your Bid includes all dealer and platform fees. Only applicable government charges are added separately. Make sure to take your best offer and remove any taxes and other government fees from it. You have to pay applicable government fees regardless, so those are not negotiation costs and will be added on top no matter where you buy the vehicle. Focus on standardizing your offers so you can clearly identify which one represents the best comparable price.

Comparing Prices for Cars With Different Trims

A lower quote may simply be for a less equipped vehicle. Make sure you are comparing the same model, trim, powertrain and relevant options before drawing a conclusion.

Trusting an Incentive Without Checking Eligibility

A rebate may require financing, prior ownership of a vehicle from the same brand, military status, recent college graduate status, or another condition that may not apply to you.

Treating AI Pulled Inventory as Guaranteed In Stock Inventory

AI can help you identify potential vehicles, but inventory can change quickly. Confirm current availability through the transaction source before relying on a vehicle being available.

Using MSRP Alone as Your Guiding Star

MSRP is a reference point, not proof of the current market clearing price. Use current comparable pricing to understand what similar vehicles are actually being offered for.

Assuming a Missed Bid Reveals the Dealer's Price Floor

When your Bid is not accepted, it does not reveal the dealer's confidential pricing threshold. The market can also change quickly, meaning a Bid placed even seconds later could encounter different market conditions.

Forgetting Financing Costs

A good vehicle price can still result in a more expensive purchase if the loan terms are unfavorable. Review the interest rate, loan term, monthly payment and total amount you will pay over the life of the loan.

Skipping the Final Contract Check

Your last quality control step is the paperwork, not the AI conversation. Before signing, make sure the final contract matches the vehicle, price, fees, financing terms and other agreed upon terms.

A note from the author

Every step above is meant to help address situations where buyers may face unexpected charges and feel they lack control over the price. In the traditional setting, the out-the-door price is often the last thing you learn during the negotiation process and may not be revealed until you are sitting at the sales desk, after fees and add ons have already been introduced.

When our team and I designed LetYouKnow's matching engine, that was the problem I wanted to remove from the negotiation cycle as an economist. We wanted to empower buyers to set their price up front and place a Bid to see whether the system accepts it based on dealer confidential thresholds and other applicable parameters.

If the Bid is accepted, there is no need to spend additional time and money chasing that price by driving from one dealership to another. Our marketplace changes the order of the negotiation process. You submit a Bid and that Bid includes all dealer and platform fees. Only applicable government fees, such as tax, title and registration, are added on top to reach the out-the-door total.

Traditional Research, AI Research, and AI + LetYouKnow

The point of adding AI is not to automate every decision. It is to arrive at the transaction with better information and a cleaner price comparison.

From Research to Bidding Less Than Your Best Offer

A strong AI assisted car buying workflow is straightforward and involves a few key steps:

• Define your needs.
• Narrow your shortlist.
• Compare exact trims.
• Research current prices.
• Standardize prices on an apples to apples basis.
• Verify every transaction detail that matters to you.
• Choose your Bid.
• Submit it through the transaction marketplace.
• If your Bid is accepted, contact your revealed dealer and review the final paperwork before signing.

AI can make the first half of the car buying journey much faster. LetYouKnow takes that AI powered research and turns it into AI assisted price discovery, while keeping you in control of the transaction. You decide what to buy and what price to Bid. The final decision rests with you, not AI.

Knowledge Saves® On The Go, On Your Terms®

Search with AI. Go to LetYouKnow. Bid lower than your best offer. Your Bid is locked in if accepted, with dealer and platform fees included. Government fees are added separately. If your Bid is not accepted, you pay $0 and can try again.