Last Tuesday, the grocery bill, the electricity bill, and our car payment all landed on the kitchen table in the same stack. My husband flipped through them, pointed at the car folder, and said the thing we both think but rarely say out loud: “We keep talking about whether we need a second car. Maybe we should actually count what a car costs. Not the sticker. The rest of it.”
Fair. We do a lot of budgeting around our cars and very little inside them. So I sat down and counted. That turned out to be the conversation that changed how my husband and I talk about this decision, because the part of a car’s cost that doesn’t show up on any receipt is the part that’s quietly eating our savings.
The part of the car you never see on a bill
When you buy a car, the price tag is the headline. But there are a few other costs hiding underneath it, and the first one is the one nobody tells you about.
Depreciation. This is the sneakiest cost of all. If you buy a car for $40,000 and sell it two years later for $28,000, you’ve lost $12,000. That’s $500 a month, gone, doing a fully paid-for monthly commute. None of it is on a bill. You just stop having it. If you lease, that depreciation is baked into your monthly payment.
Opportunity cost. If you put $20,000 into a car instead of into your investment account, that money isn’t working for you while it’s sitting in the driveway. Borrow the $20,000 instead and you’re paying interest on top of it.
Running costs. Inspections, oil changes, new tires. (If you haven’t checked your tire tread depth recently, that’s your reminder.) Then state tax, which changes a lot depending on the age and type of car. Insurance, which stings if you’re young. And fuel or electricity. It adds up.
That’s six categories before you’ve driven a mile. The sticker price is the smallest one.
Alice vs. Gary: two cars, two very different numbers
So I built two versions of the same decision. Two hypothetical friends, both shopping the same day for the same modest German hatchback. Same car, two very different driving lives.
Alice has a long commute — 10,000 miles a year — and she can’t be late for work, so she wants the reliability of a new car and a warranty. She buys a brand-new one for $20,000, cash. Here’s her year: depreciation $3,000. New cars shed value like a wet dog sheds water. Opportunity cost: $20,000 sitting out of her investment account at 5% is $1,000 a year. Fuel: $1,500. Running costs, including tax and insurance: $800. Alice’s total: $6,300 a year. That’s $121 a week. Every single week, for 10,000 miles of commuting.
Take a breath on that one.
Gary can catch the bus if it comes down to it, so he doesn’t need the new-car warranty. He buys a three-year-old car for $10,000, mostly for errands and weekend trips, 7,000 miles a year. His numbers: depreciation $1,200, opportunity cost $500 a year, fuel $1,050, and running costs a little higher at $1,000 because older cars need a bit more love. Gary’s total: $3,750 a year — $72 a week.
Same country, same year, same lane — and Alice is paying $49 a week more for a car that hasn’t even been three years old yet. That gap has nothing to do with any payment either of them makes to a bank. It’s just there, sitting between the new-car smell and the used-car math.
One note on the opportunity cost line: that’s the investment return you’d have made on the cash tied up in the car while you own it. You recover some of that when you sell, but not all of it — in Alice’s case the depreciation eats the difference.
What if you don’t drive to a higher salary?
Here’s the version I didn’t see coming. I made up a third friend, Jess, who works close to home and earns $25,000 a year — about $21,521 after tax. One day, Alice points out there’s a job at her own company paying $35,000 — $10,000 more — but it requires driving. So I ran the math for Jess: walk to the lower-paid job, and you keep $21,521 with no car costs at all. Drive to the higher-paid job, and you keep $28,721 — but the car eats $6,300 of it. You end up with $22,421. The entire raise, the whole $10,000, is reduced to $900 a year. For that. Plus being stuck in traffic twice a day, every day, for the rest of the year.
That’s the number I keep. Not the $6,300 — the $900. Nobody’s salary goes up by $900 and they think nothing of it. And if you think the fix is a cheaper car, fine — but a lot of the best-selling cars out there cost more than this one.
The number that actually changed our kitchen-table math
Then I did the compounding. Because Alice’s car wasn’t just an expense — it was also a hold on $6,300 a year, $525 a month, that was never going anywhere.
So I imagined Alice giving up the car without losing her income. Maybe she finds a different job, or moves closer, or convinces her employer that working from home is back in style again. She takes the car money and puts it into her investment account instead. Over 20 years at a 5% return, that $525 a month becomes $213,915. Roughly a quarter of a million dollars that spent the whole time sitting in the driveway.
That number could be the difference between retiring early and working a few more years of the same job I’m already in.
Now, not everyone can skip a car. Some people have medical reasons, or kids who have to get to a distant school. For a lot of us it’s a real tool, in our family too. But for a lot of us, a second car is a choice — and choices have prices.
What I budget instead of owning a second car
Our family already has one car. The question isn’t whether we need a car — it’s whether we can stop needing a second. Here’s what I budget in its place:
- A grocery delivery subscription: around $40 a year. Most major chains offer one now, and it saves the miles I used to drive to the store twice a month.
- A paid membership on top: Amazon Prime, with its delivery perks baked in, is $95 a year. I use the delivery function for midweek runs I used to drive.
- An emergency ride: I budget $20 a month for a taxi or rideshare. There are enough local options that getting a ride when I need one is easier than it sounds.
- A rental for the occasional week away: $200 a year, set aside for a single week of car rental. A couple of local rental places and some car-sharing services make it easy to have a car for a week without owning one all year.
Add it up and that’s $570 a year. So when it feels indulgent to pay for delivery every week, I figure: I would pay that indulgence. Compared to several thousand a year for a car that loses value while parked, it stops looking indulgent at all.
If you have to own a car (or two)
If you need a car, or two, and the math says yes, here’s how I’d actually buy one:
- Stay off the new-car lot if you can. Modern cars are so well made that most buyers can keep a used one on the road for a decade, and the new-car lot is where the biggest chunk of depreciation is waiting.
- Pay cash if you can, to kill the financing charges before they start.
- Buy the smallest car that’s practical for your life. It’ll cost less to buy, and every ongoing cost — insurance, fuel, tires, tax — drops with it.
- Buy the fancy pair of shoes instead, if you want to show off. They’ll be $20,000 lighter to keep over the years.
A neighbor of mine used to bike me up about having to drive to the big retail park every time she ran out of milk — even though there’s a small grocery within walking distance of where she lives. If I’d been in the car, we’d never have stopped to chat. I think that little thing says a lot. Honestly, I feel a bit richer from using my car less — not just in the account, but out in the world too.
Car ownership is still treated like a rite of passage. But if you can swallow your ego, buy a smaller used car, walk around more, and design your life around deliveries and rentals, you might hit the more important milestone — early retirement — years sooner than you’d expect. Here’s the move for this week, not next month: open your budget, put the car — not the sticker, the whole cost — in front of you, and see how much of the rest of your life is on the other side of that number.