answer like a pro

“I always buy new cars because the interest rate is lower.”

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“Interest rates are low, so it’s better to buy new.” Here’s a response that does the real math.

New cars: low interest rates… but at what cost?

Buying a new vehicle because of a lower interest rate is a strategy many consumers adopt instinctively. On the surface, it seems logical: why pay more interest on a car loan if you can avoid it by buying new? However, focusing solely on the interest rate without considering the total cost of ownership can lead to suboptimal financial decisions.

The illusion of the attractive interest rate

Automakers often offer 0% or low-interest financing promotions on certain new models. These offers are designed to boost sales, especially for vehicles with high profit margins or those nearing the end of their production cycle. Although attractive, such promotions often come with conditions: shorter loan terms, no cash rebates, or the requirement to choose a specific model.

In many cases, these enticing rates can hide a higher purchase price than what could be negotiated for the same vehicle if paid in cash or financed at a standard rate. It’s therefore important to analyze the total cost not just the interest.

Rapid depreciation: the real hidden cost

The most expensive factor in buying a new vehicle is usually not the interest rate, but depreciation. A new car typically loses between 20% and 30% of its value in the first year, and up to 50% to 60% after five years. This means that even if you pay little interest, you lose a lot in value.

Conversely, a slightly used car (2 to 3 years old) has already absorbed that initial depreciation, allowing you to buy it at a more realistic price. Even with a slightly higher interest rate, the total cost (principal + interest) may be lower than that of a new vehicle.

Insurance, taxes, and fees: other costs to consider

New vehicles also cost more to insure. Because of their higher market value and the potential for theft or costly repairs, insurers charge higher premiums. In addition, sales taxes (GST and QST) are calculated on the full purchase price, increasing your upfront cost for a new vehicle.

Delivery fees, accessories, and extended warranties are often added to the financing of new cars, inflating the final bill — and these costs aren’t always noticed by the buyer.

The appeal of a certified pre-owned vehicle

Today, many dealerships offer certified pre-owned vehicles. These cars have undergone a thorough inspection, often come with a warranty, and can be financed at more competitive rates than in the past. This option represents a smart compromise between reliability, reasonable upfront cost, and controlled depreciation.

Conclusion

Buying a new vehicle solely to benefit from a lower interest rate is an incomplete decision if it doesn’t take into account other key factors: purchase price, depreciation, insurance costs, taxes, and loan conditions. A well-chosen used vehicle can often provide better overall value, even with a higher interest rate. What truly matters is comparing the total cost of ownership — not just the financing rate. A well-informed decision can save you thousands of dollars without compromising your transportation needs.

Sources :

  • CAA Québec – “New or Used Vehicle: How to Choose?”
    https://www.caaquebec.com/fr/conseils/acheter-ou-vendre-un-vehicule/guides/acheter-ou-louer-mon-auto/vehicule-neuf-ou-usage-comment-choisir
  • Scotiabank – “Vehicle Buying Guide: New or Used?”
    https://www.scotiabank.com/ca/fr/particuliers/conseils-plus/articles-de-fonds/posts.guide-d-achat-de-vehicule-neuf-ou-usage.html
  • Carfax Canada – “Should I Buy a New or Used Vehicle?”
    https://www.carfax.ca/fr-ca/apprendre/acheter/devrais-je-acheter-vehicule-neuf-ou-occasion
  • Royal Bank of Canada – “Buying a Car: New or Used?”
    https://www.rbcroyalbank.com/fr-ca/mes-finances-dabord/objectifs-et-aspirations/achat-dun-vehicule/trouver-la-bonne-voiture/lachat-dune-voiture-neuve-ou-doccasion/
  • La Personnelle – “Buying a New or Used Car?”
    https://www.lapersonnelle.com/blogue/auto/comment-choisir-entre-une-auto-neuve-ou-un-vehicule-d-occasion.html