How is a car loan EMI calculated?
A car loan is a secured borrowing: the vehicle is hypothecated to the lender until you clear the last instalment, which is why the rate sits well below an unsecured personal loan. Tenures are short compared with a home loan — typically three to seven years — and the rate is almost always fixed, so the instalment you sign up for is the instalment you pay right through.
The maths behind the monthly figure is the standard reducing-balance sum. Interest is charged only on the amount still outstanding, so as your balance drops each month, the interest slice inside every EMI quietly shrinks and more of your money starts retiring the principal.
How do on-road price, down payment and loan amount fit together?
The sticker you see first is the ex-showroom price, but you actually pay the on-road price, which adds registration, road tax, insurance and any handling charges. Lenders size your loan against this on-road figure and expect you to fund a slice of it yourself — the down payment. Whatever is left over is the amount that actually goes onto EMI.
Take a car with a ₹10,00,000 on-road price. Put down 20%, or ₹2,00,000, and you finance ₹8,00,000. Over a five-year term at 9.5%, that settles into an instalment a little over ₹16,800 a month, and by the end you will have paid roughly ₹2,08,000 in interest on top of the borrowed amount.
| On-road price | ₹10,00,000 |
| Down payment (20%) | ₹2,00,000 |
| Loan amount financed | ₹8,00,000 |
| Monthly EMI | ₹16,801 |
| Total interest paid | ₹2,08,089 |
Are used car loan rates higher than new car rates?
Yes, and often by a wide margin. A new car might be financed around 9-10%, while a used car frequently sits at 12-15% because a second-hand vehicle is harder for the lender to value and to resell if the loan sours. Lenders also lend a smaller fraction of a used car’s value and cap the tenure so the loan never outlives the vehicle.
The gap is real money. Financing ₹8,00,000 over five years at 13% on a used car pushes the EMI to about ₹18,200 and the interest to roughly ₹2,92,000 — around ₹84,000 more interest than the same amount on a new car at 9.5%. That premium is worth weighing against the lower purchase price of a pre-owned model.
How much does a bigger down payment cut your EMI?
Every extra rupee you put down is a rupee you never pay interest on, so lifting the down payment is the single cleanest way to shrink both the instalment and the total cost. Stay with the ₹10,00,000 car at 9.5% over five years: a 20% down payment leaves an ₹8,00,000 loan at about ₹16,801 a month, while a 40% down payment shrinks the loan to ₹6,00,000 and the EMI to roughly ₹12,601.
That is around ₹4,200 lighter every month, and the interest bill falls from about ₹2,08,000 to near ₹1,56,000 — a saving of roughly ₹52,000 over the life of the loan. As long as topping up the down payment does not drain your emergency buffer, it usually beats parking that cash elsewhere.