A mortgage and a car loan are both amortized loans — you borrow a lump sum and repay it in fixed monthly installments that include principal and interest. The math is similar, but the loan size, interest rate, term length, and what happens to the underlying asset make these two debts very different in practice.
Same engine, different settings
Both loans typically use the EMI-style amortization formula. What differs is the principal amount, the annual interest rate, and the repayment term in months. A 30-year mortgage spreads a large balance over 360 payments; a 5-year car loan compresses a smaller balance into 60 payments.
Why mortgages feel interest-heavy early on
In long-term loans, interest dominates early payments because the remaining balance is large. As the balance shrinks, interest decreases, and more of each payment goes to principal. On a 30-year mortgage, you may pay mostly interest for the first several years even though your monthly payment never changes.
Side-by-side comparison: mortgage vs car loan
| Factor | Mortgage | Car Loan |
|---|---|---|
| Typical loan amount | $150,000 – $1,000,000+ | $10,000 – $80,000 |
| Typical interest rate | 3% – 8% | 5% – 15% |
| Typical loan term | 15 – 30 years | 3 – 7 years |
| Secured against | Property | Vehicle |
| Asset appreciates? | Usually yes | Always no |
| Tax deductible interest? | Sometimes (varies by country) | Rarely |
| Early repayment penalty? | Sometimes | Rarely |
| Down payment required | 5% – 20% | 0% – 20% |
Why car loans are almost always more expensive per dollar borrowed
Cars depreciate — they lose value over time. A new car loses 15–25% of its value in the first year and 50% within 5 years. When you finance a car, you are paying interest on an asset that is simultaneously shrinking in value.
At 8% interest on a $30,000 car loan over 5 years, your total payment is about $36,500 — you pay $6,500 in interest for something worth roughly $12,000 at the end of the term.
A mortgage works differently. You are paying interest on an asset that typically appreciates over time. The total interest paid on a $300,000 30-year mortgage at 6% is about $347,000 — but the property may be worth $600,000+ by then. The interest cost is offset (and often exceeded) by the asset gain.
Which loan to pay off first?
The standard financial advice: pay off the higher interest rate loan first (the 'avalanche method').
In most cases, car loan rate > mortgage rate. So pay the minimum on the mortgage and put extra money toward the car loan.
Exception: if your mortgage has a prepayment penalty and your car loan does not, pay the car loan first regardless of rates.
Exception 2: if you are emotionally motivated by eliminating a debt entirely, pay off the smaller balance first (the 'snowball method'). The math is slightly worse but people who stay motivated pay off more debt overall.
Rule of thumb: any loan above 7% interest should be paid aggressively before investing. Below 4%, the math often favours investing the extra money rather than prepaying the loan, especially in a rising market.
Compare outcomes using Mortgage Calculator () and Car Loan Calculator (/tools/car-loan-calculator).