You lose if you use a401 k loan. The loan on the 401k is based on prime rate at the time of the loan. A local credit union and a 401k loan are very close in interest. You lose because you’re not making the interest on the money removed from the 401k. Say 50k not making 6% the first year as compared to your payments back to the 401k. Way different. Also, I think they make you sit out of contributions for three months. Don’t do it for a truck
If you have borrow from the 401k to buy it, you should not be buying it. I am not saying don’t borrow, just use a credit union