Authored by Kenji Noguchi

Key Takeaways

• The average monthly payment for a new vehicle reached $767 in late 2025, with average new car loan rates around 7% in October 2026. Understanding the costs before you shop can help you make a more informed decision.
• The 20/3/8 rule offers a useful budgeting benchmark: 20% down, a three-year payoff, and total monthly car payments at or below 8% of gross monthly income.
• Getting preapproved for financing before visiting a dealership gives you a rate to compare against the dealer’s offer and can strengthen your negotiating position.
• The monthly payment is only part of the expense. Insurance, fuel, maintenance, taxes, and fees all contribute to the total cost of ownership.
• Before signing, review the final contract carefully to make sure every number, financing term, and optional product matches what you agreed to.

Financing a car is one of the most common ways to purchase a vehicle. Roughly 83% of new car buyers finance their vehicle purchases, while approximately 37% of used car buyers go the financing route. According to Experian, the average monthly payment for a new vehicle reached $767 in the fourth quarter of 2025.

With so much money involved, knowing what to look for before you shop can make a meaningful difference. From setting a realistic budget to reviewing the final contract, this checklist covers seven key financial considerations to help you prepare for your next vehicle purchase.

Want a printable version? Download our free Auto Buying Checklist at the bottom of this article to bring with you when you shop.

Before visiting a dealership, establish what you can realistically afford, including the purchase price and ongoing costs of ownership.

One commonly referenced benchmark in personal finance is the 20/3/8 rule:

• 20% down: Aim to make a down payment of at least 20% of the vehicle’s purchase price.
• 3-year payoff: Plan to pay off the loan within three years or less.
• 8% of gross income: Keep your combined monthly car loan payments at or below 8% of your gross monthly income.

This framework is a general guideline. Your ideal budget will depend on your existing financial obligations, cash flow, savings goals, and broader financial plan.

For luxury vehicles, some financial planners suggest an even more conservative approach: paying cash or paying off the vehicle within one year. Higher-end vehicles can carry greater depreciation and ongoing ownership expenses.

If you are unsure how a vehicle purchase fits into your financial plan, consider discussing it with your financial advisor before making a commitment.

Your monthly loan payment is only one part of the cost of owning a vehicle. Before finalizing your budget, account for the following expenses:

• Insurance: Request a quote for the specific vehicle you are considering. Premiums can vary significantly depending on the make, model, trim level, and driver.
• Fuel or charging: Estimate your monthly fuel expenses based on your typical driving habits and the vehicle’s fuel economy. For electric or plug-in hybrid vehicles, factor in charging costs.
• Maintenance: Review the manufacturer’s recommended service schedule and research typical maintenance and repair expenses. Parts and labor costs can vary considerably between brands.
• Taxes and registration: Account for applicable sales taxes, registration costs, and other state or local fees, which may add substantially to the purchase price.

Calculating these expenses in advance can help you determine whether a vehicle fits comfortably within your monthly budget.

Get Preapproved Before Visiting the Dealership

Consider getting preapproved for an auto loan through your bank, credit union, or another lender before shopping. Preapproval provides an estimated financing rate and helps you establish a borrowing budget. It also gives you a point of comparison when reviewing financing options offered by the dealership. Dealers may offer competitive financing, so comparing multiple offers can help you identify the most favorable terms.

Understand the APR and Total Loan Cost

The annual percentage rate (APR) reflects the annual cost of borrowing, including interest and certain lender fees. As of October 7, 2026, Bankrate reported an average rate of 7.18% for a 60-month new car loan. Your actual rate will depend on factors such as your credit profile, lender, and loan term.

Even a small difference in APR can add up over time. For example, on a $40,000 loan over 60 months, the difference between a 6% and an 8% APR is approximately $2,300 in total interest, assuming fixed rates and standard monthly payments. When comparing offers, review the APR, monthly payment, finance charges, and total amount you will repay over the life of the loan.

Evaluate the Loan Term

Longer loan terms, such as 72 or 84 months, can reduce your monthly payment. They also generally increase the total interest paid and may extend the period during which you owe more than the vehicle is worth. Consider how the loan term affects both your monthly budget and your overall cost of borrowing.

Compare Incentives and Rebates

Manufacturers and dealerships may offer promotional financing rates, cash rebates, or other purchase incentives. Some offers require buyers to choose between a lower promotional APR and a cash rebate. Compare the total cost of each option before deciding. In certain situations, accepting a rebate and using outside financing may result in a lower overall cost.

If you plan to trade in your current vehicle, research its market value before visiting the dealership. Resources such as Kelley Blue Book and Edmunds can help you establish a reasonable estimate. If you still have an outstanding loan, request the exact payoff amount from your lender.

When your remaining loan balance exceeds the vehicle’s trade-in value, you have negative equity. For example, if your vehicle is worth $18,000 but you owe $22,000, you have $4,000 in negative equity. Rolling that amount into your next auto loan increases the total amount financed and can make the new purchase more expensive.

In many states, an eligible trade-in can reduce the taxable amount of a replacement vehicle purchase, which may lower the sales tax owed. Rules and eligibility vary by state, so confirm the applicable treatment before completing the transaction.

The advertised price is rarely the final amount you will pay. Before agreeing to a purchase, request the out-the-door price in writing. This figure should include the vehicle’s selling price, applicable taxes, dealer fees, and any additional products or charges.

Pay particular attention to:

• Documentation fees: Charges for processing paperwork that may vary by dealership and state.
• Dealer-installed add-ons: Products such as paint protection, fabric treatments, or nitrogen-filled tires that may already be included in the quoted price.
• Additional fees: Any dealer-imposed charges beyond the vehicle’s advertised price.

Ask for an itemized breakdown and question charges you do not recognize or did not request. Some fees and optional products may be negotiable or removable.

During the financing process, dealerships may offer additional products and services. Understanding what each product covers, how much it costs, and whether you need it can help you avoid unnecessary expenses.

Maintenance and Prepaid Service Plans

Some dealerships advertise complimentary maintenance or offer prepaid service packages. Before accepting, confirm which services are included, how long coverage lasts, where service can be performed, and whether any additional charges apply. Compare the plan’s cost with the estimated expense of paying for maintenance as needed.

Extended Warranties

Extended warranties, often sold as vehicle service contracts, may provide additional coverage for certain repairs. Review the coverage period, deductibles, exclusions, and any overlap with the manufacturer’s existing factory warranty. Determine when coverage begins and which repairs or components are eligible.

GAP Insurance

Guaranteed Asset Protection (GAP) coverage may help cover the difference between your outstanding loan balance and the amount paid by your primary auto insurer if your vehicle is totaled or stolen. This may be particularly relevant for buyers with smaller down payments or longer loan terms. Compare the dealership’s offer with options available through your auto insurer or lender, and review any coverage limits and exclusions.

Paint and Tire Protection

Additional protection plans may cover certain cosmetic damage, tire repairs, or wheel replacement. Review what is covered, applicable exclusions, claim limits, and the total cost before deciding whether the coverage is worthwhile.

Before signing, take time to verify that every number and product in the final contract reflects your agreement. Use this checklist to review the details:

• Purchase price: Does it match the price you negotiated?
• Down payment: Is the correct amount reflected?
• Trade-in value: Are the agreed-upon value and any remaining loan payoff accurately listed?
• APR: Does the rate match the financing terms you accepted?
• Loan term: Is the repayment period correct?
• Finance charges: Are the total borrowing costs clearly disclosed?
• Total of payments: Do you understand the full amount you will repay?
• Optional products: Are only the warranties, protection plans, or services you approved included?
• Monthly payment: Does the amount match the agreed-upon financing terms?

If something appears incorrect, request an explanation and a corrected document before signing. You should also feel comfortable taking additional time to review the agreement. A vehicle purchase is a significant financial commitment, and it is worth understanding the full terms before moving forward.

A vehicle purchase can affect your monthly cash flow, insurance expenses, savings goals, and overall financial flexibility. Whether you are purchasing your first vehicle, replacing an existing one, or considering a luxury car, understanding how the expense fits into your broader financial plan can help you make a more informed decision. The Prime Capital Financial Denver team can help you evaluate how a major purchase fits into your financial goals before you commit.

Sources

Experian: Average Car Payment in 2026
Experian: State of the Automotive Finance Market, Q4 2025
Bankrate: Current Auto Loan Rates, October 2026
FTC: Financing or Leasing a Car
Kelley Blue Book: Trade-In Value Tool
Edmunds: Car Value Estimator

This information does not constitute legal advice. Prime Capital Financial and its associates do not provide legal advice. Individuals should consult with an attorney regarding the applicability of this information for their situations.

Advisory products and services offered by Investment Adviser Representatives through Prime Capital Investment Advisors, LLC (“PCIA”), a federally registered investment adviser. PCIA: 6201 College Blvd., Suite 150, Overland Park, KS 66211. PCIA doing business as Prime Financial | Wealth | Retirement | Wellness | Family Office | Tax Advisory | Endowments & Foundations. Tax planning and preparation services are offered through Prime Financial Tax Advisory.