Why These Myths Stick — and What They Cost You
Car ownership myths tend to survive because they contain a grain of truth, sound reasonable, or were accurate at some point in automotive history. The problem is that acting on outdated or flat-out wrong information can quietly add hundreds — sometimes thousands — of dollars to your annual ownership costs. Whether you're deciding between a new and used vehicle, choosing where to get your oil changed, or trying to figure out if that high-mileage car is worth the risk, the assumptions you carry into those decisions matter.
This article covers five of the most financially damaging myths we see repeated most often. Each one is widespread enough that even financially savvy drivers believe it. For context on just how many overlooked costs can pile up, what the sticker price doesn't tell you is a useful starting point.
Myth
A newer car is always cheaper to run than an older one.
Fact
Newer cars typically carry higher depreciation, insurance premiums, and loan interest — costs that can easily exceed lower repair bills.
It feels logical: fewer miles, fresher parts, must cost less. But the math doesn't always work that way. AAA's annual Your Driving Costs study consistently shows that depreciation is the single largest ownership expense for new vehicles — often exceeding $4,000 per year in the first few years. Add higher comprehensive insurance premiums and loan interest, and a new car can cost significantly more annually than a well-maintained used vehicle with occasional repair bills. The total cost of ownership comparison between new and used cars is rarely as clear-cut as the monthly payment suggests.
Myth
Getting your car serviced somewhere other than the dealership voids your warranty.
Fact
Under the Magnuson-Moss Warranty Act, manufacturers generally cannot void a warranty simply because you used an independent shop or aftermarket parts.
This myth has stuck around for decades, and it costs drivers real money. Many people pay dealership labor rates they don't need to. The Magnuson-Moss Warranty Act — a federal consumer protection law — generally prohibits manufacturers from voiding a warranty solely because you had work done at an independent shop, provided the work met manufacturer specifications and you kept records. There are narrow exceptions (typically involving defective aftermarket parts that directly caused a failure), but routine oil changes and brake jobs at a reputable independent mechanic are legally protected in most cases. Always keep receipts. For a closer look at which beliefs around servicing are actually costing drivers money, see common car maintenance myths.
Myth
Your monthly car payment is your biggest car expense.
Fact
Depreciation — the loss of your vehicle's value over time — is typically the largest single ownership cost, yet it's invisible on any monthly statement.
When most people budget for a car, they think in terms of the monthly payment. But that payment only covers the loan principal and interest. It says nothing about how much value the vehicle is quietly shedding each month. According to AAA research, a new vehicle can lose roughly 15–25% of its value in the first year alone. Over five years, depreciation can account for the largest share of total ownership cost — more than fuel, insurance, or maintenance combined. Understanding how depreciation works is essential before committing to any purchase. And for the full picture of what you're actually spending, the true annual cost of car ownership breaks it all down.
Myth
High mileage means a car is unreliable and not worth buying.
Fact
Mileage is one indicator of wear, but a well-serviced higher-mileage vehicle can be more reliable than a low-mileage car with a neglected service history.
Mileage is a shorthand, not a verdict. What matters far more is how those miles were accumulated and whether the vehicle was maintained along the way. A car with 120,000 miles that has complete service records, fresh fluids, and no deferred maintenance can be a sounder choice than one with 60,000 miles and no documented care. A pre-purchase inspection from an independent mechanic — typically costing $100–$150 — provides far more useful information than the odometer reading alone. That said, high-mileage ownership does carry specific trade-offs worth understanding; the pros and cons of high-mileage vehicle ownership covers those honestly.
Myth
Your car insurance rate is mostly determined by your driving record.
Fact
Insurers weigh many factors — including your credit-based insurance score, ZIP code, vehicle type, and annual mileage — and their relative weight varies by state and provider.
A clean driving record helps, but it's rarely the whole story. In most states, insurers are permitted to use a credit-based insurance score, which can significantly influence your premium regardless of how safely you drive. Where you live matters too — urban ZIP codes with higher theft or accident rates typically carry higher premiums than rural ones. The vehicle itself plays a role: repair costs, theft rates, and safety ratings all factor in. Because this area is widely misunderstood, it's worth reading about insurance myths that cost drivers money before assuming your rate is fixed or fair. Note that insurance regulations vary by state, and this is general information — not advice tailored to your situation.
Building a More Accurate Picture of What You're Spending
Once you set aside these myths, a clearer — and more actionable — view of your car costs emerges. Routine maintenance is one area where accurate expectations matter most; why maintenance costs catch so many car owners off guard walks through what oil changes, tires, brakes, and other regulars actually cost over time. And if you're trying to reduce expenses without creating safety risks, keeping running costs low without cutting corners on safety offers practical habits that genuinely move the needle.
The goal isn't to make car ownership feel overwhelming — it's to make sure the decisions you're making are based on how things actually work, not how you assumed they did. That gap, myth versus reality, is where a lot of unnecessary spending hides.
This article provides general information about car ownership costs and is not personalized financial or legal advice. For decisions specific to your situation, consult a qualified financial adviser or licensed professional.
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