The payment is only part of the cost
Cars cost money in four ways: the loan payment, insurance, fuel and maintenance — plus depreciation, which is invisible until you sell. Budgeting only for the payment is why so many households feel stretched by a car they were told they could afford.
Start from a total budget
Decide what share of income the whole car may consume, then subtract running costs to find what is left for the loan. On $6,500 a month at 10%, the total is $650; after $145 insurance, $160 fuel and $80 maintenance, only $265 remains for the payment. That is a very different car from the one a $650 payment would buy.
Depreciation is the largest hidden cost
A typical new vehicle loses roughly 20% of its value in year one and about 60% over five years. On a $40,000 car that is $24,000 of value gone — considerably more than the interest on the loan. Buying used shifts most of that loss to someone else.
Insurance varies more than people expect
Premiums depend on the model, its repair costs, its theft rate and its safety record as much as on your driving history. Get quotes on the specific vehicles you are considering before deciding — the difference between two similarly priced cars can be $60 a month, which is real purchasing power.
Resist the term stretch
If the car you want only fits with a 72 or 84-month loan, the honest conclusion is that it is the wrong car. Long terms keep you underwater for years and guarantee that your next purchase starts with negative equity rolled in.