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4x4ord's avatar
4x4ord
Explorer III
Feb 06, 2017

How do you determine how much to spend on a truck?

A young friend of mine just traded his 2016 King Ranch F350 diesel in on a 2017 Lariat. He said they offered him a deal he couldn't refuse. They allowed him $63k for his '16 with 18k miles and it cost him $9000 to make the trade. I thought that is likely a deal I wouldn't be interested in. Then he said his payments will only go up $30 per month.

My kids are asking me for advice on saving and spending money and so I've been doing a little reading on how people should determine their budget for car buying.

Someone says you should be able to put 20% down; plan to pay it off in 4 years and not have to use more than 10% of your take home pay to make your payments. Another says you should not buy a vehicle that costs more than 10 or at the most 20% of your salary. I've also read that we shouldn't spendore than 5% of our networth on a vehicle.

If I apply these rules to my friends new purchase I come up with some pretty striking numbers.

If he were to follow the 5% of networth rule he would need a net worth of $1,440,000 before forking out $72k for a new truck.

If he followed the not paying more than 20% of his salary on the purchase price of a vehicle he would need to be making $360,000 per year before considering his purchase.

And following the 20/4/10 rule: If he has 20% down and is making payments to have the truck paid off in 4 years his payments would be close to $1300 per month which means he should be making at least $156,000 per year.

So even the most liberating of these rules suggests that there is likely way more Platinum, Denali or Longhorn trim level trucks on the road than what there should be.

My kids are driving 10 year old cars.

106 Replies

  • The way to save the most money on vehicles is to keep them as long as possible. Whether you buy new or used. If you don't have much for resources, you have to pick something that will get you where you need to go at a price you can afford. I couldn't afford a new pickup, so I had to buy used. The wife's vehicle is less cost to get into, so we bought new. She just needs to keep it until it is no longer reliable enough for where she needs to travel. The biggest part of depreciation is the dealers portion of the deal. Everytime you turn a vehicle is where a chunk of value is lost.

    In my area, a dealer wants $2000 to turn a car, and $5000 on a pickup. I do not begrudge the dealer making a profit, I just prefer its not my money they make a profit with.

    Paying cash is great, but it does not always make the most sense. We live 25 miles from town. The wife puts on 22000 mi a year. I spend a lot of time travelling for work, so I do not want to worry about her and the kids in an old beater. But the wife is willing to drive a vehicle that can be bought new for ~$25000. Not a problem to make a down payment and payments when the plan is to keep the car for 7-8 years.

    All that said, there are very few people that can actually afford a new Platinum/Lariat etc. Many would be better off with an XLT/XL. Next time I get to buy a pickup, it will probably be a new XL, and it will need to live as long as I do.
  • 4x4ord wrote:
    Then he said his payments will only go up $30 per month.

    It sounds like the salesman reeled him in....
  • When I was young (admittedly a long time ago) the rule of thumb was not more than 20% of your income for a mortgage and not more than 25% of your income for all debt payments combined; and that didn't include credit card debt because that should be paid off in full every month. Those rules of thumb may have changed since then. So if he doesn't have a mortgage, he can afford a lot more for a truck.

    But I really wonder; what does it matter to you what your neighbor does with his money?
  • You should be able to pay cash for it. That's the most important rule. And how do you get there? By NOT spending $9K in a year on vehicle depreciation.

    If you are going to need a vehicle in 3 years, start saving NOW. It's not a surprise that you are going to need to replace the one you have now. Then buy what you can pay cash for. Save a little bit each month to replace it. Buy a slightly newer vehicle next time, keep it longer, save longer. Repeat a few more times.

    After doing that for about 20 years, maybe you can pay cash for a really nice ride. My advice would be never spend more than 1/2 your annual income on a vehicle. And then don't eat the depreciation on a brand-new one.
  • There is a reason salesmen ask the potential buyer how much they would like their payments to be. That is all some consider with little regard to the total price or how many of those payments they have to make.
  • The old fashion way....my dad always said, a week's take home pay for a house payment, a week's pay for a vehicle payment, a week's pay for food and a week's pay for other things. Seems like I had more making the minimum wage of 1.25 an hour than I do now.

    Then, when you loose your spouse, 1/2 of the income goes out the window...

    Good Luck to your friend.