Excellent analysis, but it holds to the 20 (possibly 30) year old notion that people should get a 4 year loan. What's so magical about a 48 month loan? Don't get me wrong, I hate all debt! A one year loan is 12 months too long for me.I never said I gleaned it from this data but let’s do some basic math.
The most recent official figure of median household income from the US Census Bureau is for 2023 and that number was $80,610. That was a few years ago though and people tend to get raises year over year so let’s be generous and assume that they receive a raises that aligned to the CPI which was 4.1% for 2023 and 3.4% for 2024. That would place their current income at $86K.
Monthly take-home is generally accepted to be 75-80% of gross, and frankly that is also rather generous. Let’s assume 80%. That’s $68,800 which works out to about $2,650 per pay period.
A conservative car payment is generally accepted to be around 10% of take home pay. In this case that would equate to $529. Let’s call it $530.
Total transportation costs should generally not exceed 20% of take home pay. To be clear, total transportation cost includes the car payment, insurance, fuel, and maintenance. In this case, that equates to $1,030.
The 20/4/10 rule is the most common rule used by financial experts when determining a budget to buy a car.
So working backward from a $530 payment (10% of a monthly net income of $5,292) on a four year loan with a 7.2% interest rate (Q22025 average) the average household earning the median income can afford a car loan of around $24k. With a 20% down payment, the total cost should not exceed $29K. Surprise! That’s right where the Mav sits in pricing. How curious.
- 20%down payment
- Finance for 4 years or less
- Total transportation costs should not exceed 10% of your gross monthly income.
KBB pegs the average new vehicle transaction price (ATP) at $48,841for July 2025 (https://www.kbb.com/car-news/new-car-prices-stayed-largely-steady-in-july/#:~:text=The average American new car,the rest of North America.)
That is far and above what the average us household earning the median income can sustainably carry. Now if that’s true, how is it that the ATP is $48.8K when all they can afford is $29k?
Stupid long terms. Ridiculously high notes. Overly lax underwriting standards from lenders who are approving buyers for amounts that are 15-20% of gross income which is well above a prudent and reasonable standard. In fairness to that wicked high ATP, many households also roll negative equity from their previous loan into the new loan, which skews the ATP high and that’s dumb for all kinds of obvious reasons but I digress.
An $80k household cannot afford a $50K car. Not without making massive financial sacrifices that will cripple them. $1,000+ car payments for 84 months is not normal and not sustainable.
BUT if you're going to go into debt, is 5 years really that much worse than 4 years? If so, why not make 3 years the standard? Because 3 years is unreasonable with today's car prices? Some might make the same argument with 4 year loans.
Here's the best car buying advice I ever got. When you do finally pay off your vehicle, keep making that payment to a savings account. You could save enough money in 3 years to buy a new car, because you're getting the interest instead of paying it to the lender. Once you have enough saved up for a new car, keep making payments to the savings account! Then you'll have money for when your car breaks down. It's a get rich slow scheme, but it works!!
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