Requirements – Car Price Calculator

1. Functional Requirements

• FR1. Input Base Price
  The user should be able to enter the base price of the car.

 

• FR2. Select Car Type / Model
  The user must be able to select a specific car type or model from a predefined list (e.g., SUV, Sedan, Hatchback).

 

• FR3. Choose Add-ons or Features
  The system should allow selection of optional add-ons (e.g., sunroof, navigation system, alloy wheels) which affect the final price.

 

• FR4. Apply Taxes and Fees
  The calculator should automatically apply relevant taxes, insurance, and registration fees to the base price.

 

• FR5. Display Final Price
  The system must compute and display the total price of the car, including all selected options and charges.

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2. Non-Functional Requirements

• NFR1. Performance
  Calculations should be completed and displayed within 1 second of user input.

 

• NFR2. Usability
  The user interface must be intuitive and easy to navigate for non-technical users.

 

• NFR3. Scalability
  The system should be able to handle an increasing number of car models and features without redesign.

 

• NFR4. Accuracy
  All price calculations (including taxes and fees) must be accurate to two decimal places.

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3. Optional Requirements

• OR1. Finance Calculator Integration
  Option to calculate monthly EMI (loan installment) based on interest rate and loan duration.

 

• OR2. Save and Compare
  Users should be able to save multiple configurations and compare their total prices side by side.

 

• OR3. Localization Support
  Prices should support different currencies and tax structures depending on the user’s region.