Car loan EMI uses the reducing-balance formula:
EMI = P × r × (1 + r)n ÷ ((1 + r)n − 1)
- P — amount financed (on-road price minus down payment)
- r — monthly interest rate (annual rate ÷ 12 ÷ 100)
- n — number of monthly instalments (years × 12)
Car loans in India are usually fixed-rate, so the EMI stays constant. Because cars depreciate, a shorter tenure usually makes more sense than stretching payments over 7 years.