Is a Second Car Worth It?

Figures checked October 24, 2026

The example, line by line

Here is the car in the example, so you can see exactly what the number assumes: a used car priced at $18,000; 10% down ($1,800); $500 in day-one title and dealer fees, rolled into the loan; an 8% APR (the yearly interest rate on the loan); 60 months to pay; 6,000 miles a year (a little-driven second car); 28 miles per gallon; gas at $4.29 a gallon (the AAA national average); insurance at $1,500 a year; upkeep (maintenance) at $1,000 a year; registration at $125 a year; and a resale value of $9,000 after five years. The loan is $16,700, and the monthly payment is $339.

• The value it loses (depreciation): $9,000 ($18,000 minus $9,000 resale)
• Insurance: $7,500 ($1,500 x 5 years)
• Gas: $4,596 (6,000 / 28 x $4.29 x 5 years)
• Upkeep (maintenance): $5,000 ($1,000 x 5 years)
• Registration: $625 ($125 x 5 years)
• Fees and interest: $4,117 ($500 fees + $3,617 loan interest)

That totals $30,838 over five years, or about $514 a month. Sales tax is not in this example because it depends on your state, in Texas it would be 6.25% of the price minus any trade-in. Add your state's tax for your own total. Your numbers will differ, insurance especially swings by driver, car, and city, but the shape of the total does not change: the payment is only part of what a second car costs.

Formula

The five-year total is six lines added together: the value it loses (depreciation) $9,000, insurance $7,500, gas $4,596, upkeep (maintenance) $5,000, registration $625, and fees and interest $4,117. That is $9,000 plus $7,500 plus $4,596 plus $5,000 plus $625 plus $4,117, which is $30,838 over five years, or about $514 a month. The loan payment is only part of what a second car costs.

Each line is worked from the example car: a used car priced at $18,000, 10% down ($1,800), $500 in day-one title and dealer fees rolled into the loan, 8% APR, 60 months to pay, 6,000 miles a year, 28 miles per gallon, gas at $4.29 a gallon (the AAA national average), insurance at $1,500 a year, upkeep at $1,000 a year, and registration at $125 a year. Depreciation is $18,000 minus $9,000 resale, which is $9,000. Insurance is $1,500 times 5 years, which is $7,500. Gas is 6,000 miles divided by 28 miles per gallon times $4.29 a gallon times 5 years, which is $4,596. Upkeep is $1,000 times 5 years, which is $5,000. Registration is $125 times 5 years, which is $625. Fees and interest are $500 in fees plus $3,617 of loan interest, which is $4,117. The loan is $16,700, and the monthly payment is $339. The $339 payment is rounded to the dollar, so the interest is stated as printed rather than worked back from the rounded payment.

Two yardsticks check the example. AAA 2026 study puts the all-in average cost of owning a new vehicle at $12,863 a year, about $1,072 a month. A published breakdown for a little-driven second car puts the range at roughly $1,800 to $7,900 a year (about $150 to $658 a month), with insurance from $800 a year for liability-only coverage to $2,400 for full coverage. The $514-a-month example sits inside that range. The rideshare side: Gridwise 2025 data puts the average amount an Uber rider paid at $24.32 per trip. At that average, two rides a week runs about $211 a month ($24.32 times 2 times 52 divided by 12), and four rides a week runs about $422 a month. Both sit under the example car $514 a month.

Why a car that sits still still costs money

Drive it less and only one line shrinks: gas. Insurance, the value it loses, registration, and the loan payment keep coming every month whether the car moves or not. That is why a little-driven car can still cost several hundred dollars a month, and why "we barely use it" is not the same as "it barely costs anything."

Two yardsticks to check it against

AAA's 2026 study puts the all-in average cost of owning a new vehicle at $12,863 a year, about $1,072 a month. A used second car costs well under that, but as the example shows, it is not cheap either. A published breakdown for a little-driven second car puts the range at roughly $1,800 to $7,900 a year (about $150 to $658 a month), with insurance from $800 a year for liability-only coverage to $2,400 for full coverage. The $514-a-month example sits inside that range, which is a useful cross-check: the example is not an outlier.

The other side: paying for rides only when you need them

For a household that only needs an extra car once or twice a week, the comparison is rideshare. Gridwise's 2025 data puts the average amount an Uber rider paid at $24.32 per trip. At that average, two rides a week runs about $211 a month ($24.32 x 2 x 52 / 12), and four rides a week, two round trips, runs about $422 a month. Both sit under the example car's $514 a month. The other side of that ledger: rides cost surge prices at busy times, involve waiting, and there is no car sitting in the driveway at 2 a.m. A car-share service, which rents by the hour or day, is a third option, rates vary by city, so price your city's service before comparing. Both sides' numbers are on the table; the call is the household's. For the own-it-outright comparison, see whether it's cheaper to own a car or just use Uber.

Calculation transparency

Scope. One example second car for a household that keeps one car, a used $18,000 car driven 6,000 miles a year, priced over five years line by line, checked against two yardsticks and against rideshare.

Rules and time period. Example car: used, $18,000; 10% down ($1,800); $500 day-one title and dealer fees rolled into the loan; 8% APR; 60 months; 6,000 miles a year; 28 miles per gallon; gas at $4.29 a gallon, the AAA national average; insurance $1,500 a year; upkeep $1,000 a year; registration $125 a year; resale $9,000 after five years. Loan $16,700, monthly payment $339. Sales tax is not in the example because it depends on the state.

Scope and limitations. Educational estimate only. Sales tax is not in the $30,838: in Texas it would be 6.25% of the price minus any trade-in, so add your state tax for your own total. Insurance swings by driver, car, and city. Drive it less and only the gas line shrinks: insurance, the value it loses, registration, and the loan payment keep coming every month whether the car moves or not. Prices vary by car, shop, and city. Get a written quote for your own car before you decide.

Source links checked November 6, 2026. Figures: AAA 2026 Your Driving Costs study, new-vehicle average $12,863 a year; a published second-car breakdown, little-driven range roughly $1,800 to $7,900 a year and insurance range $800 to $2,400 a year, 2026; Gridwise 2025 rideshare data, average rider fare $24.32 a trip; AAA national gas average, October 2026, $4.29 a gallon, as used on the Texas page. The published second-car breakdown is named only, not linked.

Primary sources: AAA Your Driving Costs 2026; Gridwise, average Uber trip costs a rider $24.32; Is it cheaper to own a car or just use Uber. How the numbers are calculated is written down on the methodology page, and every source is listed on the sources page.

Definitions

Second car. An extra car in a household that keeps one car already. On this page, a typical used second car costs about $30,838 over five years, or about $514 a month.

Depreciation. The value a car loses over time, the gap between what it cost and what it is worth later. On this page, $18,000 minus $9,000 resale, which is $9,000 over five years.

Insurance. The insurance line in this total, $1,500 a year, or $7,500 over five years. It swings by driver, car, and city.

Gas. The fuel line, $4,596 over five years in the example: 6,000 miles divided by 28 miles per gallon times $4.29 a gallon times 5 years.

Upkeep. Maintenance, the work that keeps a car running. On this page, $1,000 a year, or $5,000 over five years.

Registration. The yearly plate and paperwork fee that makes a car legal to drive. On this page, $125 a year, or $625 over five years.

Fees and interest. The day-one title and dealer fees plus the loan interest. On this page, $500 in fees plus $3,617 of loan interest, which is $4,117.

APR. Annual percentage rate, the yearly interest rate on the loan. This example uses 8%. For context, Experian reported average rates of 6.35% on new cars and 11.19% on used cars in the second quarter of 2026.

Questions people actually ask

How much does a second car cost per month?

A typical used second car runs about $514 a month over five years in the example above. Published breakdowns for little-driven cars range roughly $150 to $658 a month, depending on insurance and how much you drive.

Is it cheaper to just Uber sometimes?

At the 2025 average of $24.32 a trip, two rides a week runs about $211 a month and four rides about $422, both under the $514 a month of the example car. The trade is availability: rides cost surge prices at busy times and are not sitting in your driveway.

Does a second car cost less if you barely drive it?

Only the gas line shrinks. Insurance, the value it loses, registration, and the loan payment keep coming every month. That is why a car that sits still can still cost several hundred dollars a month.

What does the $30,838 total include?

Depreciation $9,000, insurance $7,500, gas $4,596, upkeep $5,000, registration $625, and fees and interest $4,117, which add to $30,838 over five years, or about $514 a month. The loan payment is only part of what a second car costs.

What is not in the $30,838 total?

Sales tax is not in the example because it depends on the state; in Texas it would be 6.25% of the price minus any trade-in. Add your state tax for your own total.

Related: If a second car makes sense, keep it cheap. See the cheapest cars to own.

Related: Check the budget first. See how much car you can afford.

Related: A second car for a student driver? See the first car for a college student.

Run your own numbers

Change the price, the miles, and the insurance to match your household, the calculator does the same five-year math as the example above. Shopping used? The true cost of a used car page runs the same math for a first car, and new vs. used compares the two paths side by side. If that first car is for a teen, see how much a first car really costs a teen.

Figures: AAA's 2026 Your Driving Costs study (new-vehicle average); a published second-car breakdown (little-driven range and insurance range, 2026); Gridwise 2025 rideshare data (average rider fare); AAA national gas average, October 2026, as used on our Texas page. Insurance, registration, and rideshare prices vary by driver, city, and time of day, the structure is the part that does not change.