What does always having a car payment cost?
A car payment treated as permanent is one of the largest lifetime outflows a household carries — and every rand of it goes towards an asset that is worth less each year than the year before.
Held at R7,000 a month without a break, thirty years of instalments comes to R2,520,000 in today’s rand. That is the instalment alone: insurance, fuel and upkeep are a separate stack on top. The number is not large because the cars were extravagant. It is large because the payment never stopped.
The payment as a default setting
Vehicle finance in South Africa is commonly written over 60 or 72 months, and cars are commonly replaced sooner than that — every four or five years, when the warranty runs thin or the model gets a facelift. Those two habits do not line up. The term outlasts the enthusiasm.
So the car gets traded before it is paid off, whatever is still owed moves across into the next agreement, and a new instalment starts on the same debit order date. What ends is the car. The payment carries on — slightly different amount, different colour, same day of the month.
After two or three cycles it stops behaving like a purchase and starts behaving like a utility bill: a fixed monthly cost that sits between the medical aid and the electricity and never comes up for review. The tell is simple. If you can name every car of the last fifteen years but not a single month in which no instalment left the account, the car is not something you bought. It is something you subscribe to.
What the permanent instalment adds up to
Take R7,000 a month as a working figure — a mid-range financed car — and hold it steady from a first serious car in someone’s late twenties to the last one before retirement. The arithmetic is deliberately blunt:
- R7,000 × 12 = R84,000 a year
- R84,000 × 30 years = R2,520,000
That is multiplication and nothing cleverer. No interest is modelled on top, no inflation, no assumption about what the money might have done elsewhere. It is today’s rand, counted once a month, for thirty years.
It is also the instalment only. Comprehensive insurance, fuel, tyres, licensing and maintenance sit entirely outside that R2,520,000 — and on the way most cars are run, they are not a rounding error against it.
Why nobody is impressed
Net worth is one subtraction: what you own, minus what you owe. A financed car manages to appear on both sides of it at once.
On the asset side sits the car, losing value every year it is driven — that is what depreciation is, and it is steepest early. On the liability side sits the loan, coming down slowly at first, because the early instalments are weighted towards interest rather than capital. Two lines moving in the same direction at different speeds.
Early in a 72-month term those lines commonly cross the wrong way: the settlement figure is higher than what the car would actually fetch. The gap has a name — negative equity — and for as long as it lasts, the car is not adding to net worth. It is subtracting from it.
Which is the quiet answer to the badge on the boot. A visible car payment is evidence of an outflow, not of a balance. It shows that a bank was willing to take the risk; it says nothing whatsoever about what is left at the end of the month. That is not an argument about what anyone drives — plenty of people sign knowing exactly what the car costs and think it is worth every rand of it. It is only an observation about what the payment proves, which is nothing.
The trade-in treadmill
Trading in mid-term does not clear a shortfall. It moves it. Where the settlement figure exceeds the trade-in value, the difference is commonly rolled into the new agreement — so the next car begins its life carrying a piece of the last one. Do that twice and part of every instalment is paying for vehicles that left the driveway years ago.
A balloon payment runs the same idea from the other end. It defers a slice of the capital to the final month so the monthly number looks smaller, while interest runs on that deferred slice for the whole term. At month 72 the slice falls due in full, and it is commonly settled by refinancing it or by trading the car in — which is precisely where the cycle rejoins itself.
The monthly version of this stack — instalment plus insurance plus fuel plus upkeep, measured against income — is laid out in "What does a car really cost — instalment, insurance, fuel — as a share of income?". This article is the same arithmetic with the time axis stretched out.
The same numbers in a different pattern
None of this says what anyone can or cannot drive. It says only that the arithmetic behaves differently depending on where the payments fall.
A car that is paid off and then kept for three more years produces 36 months with no instalment attached to it. At the worked example’s R7,000, that is 36 × R7,000 = R252,000 that does not leave the account, in today’s rand. The car still costs money over those three years — insurance, fuel, and maintenance that generally climbs as a car ages. What it does not cost, for 36 months, is the instalment.
The multiplication runs the other way just as easily: replacing a car a year sooner than the last cycle adds twelve instalments to a driving life that is already counted in hundreds of them. Neither direction is a rule about when to trade. It is just what the arithmetic does when the numbers move.
Where the number becomes visible
The monthly picture has a calculator attached to it: "What does a car really cost — instalment, insurance, fuel — as a share of income?" adds the full stack and measures it against income. The lifetime picture has one too — "How much does a lifetime of new cars cost in depreciation?" runs a replacement cycle out across a driving career and shows what the pattern loses in value, which is a separate number again from what it costs in instalments.
Between the two, the car question stops being a feeling about affordability and becomes a figure that can be checked in five minutes, before anything is signed.
Terms used on this page
- depreciation
- The process of an asset losing its monetary value over time due to wear and tear, age, or becoming outdated.
- balloon payment
- A lump sum deferred to the end of a finance deal. It lowers the monthly instalment, but interest runs on the deferred amount for the whole term.
Reviewed July 2026