README.md

metadata

title: PriceMyCar
emoji: 🚗
colorFrom: blue
colorTo: green
sdk: docker
app_port: 7860
pinned: false

PriceMyCar

PriceMyCar is a web app to estimate used car prices in Indonesia. It uses a machine learning model to estimate the base price and adjusts it based on a 10-factor physical condition checklist.

Features

• Price Estimation: Estimates base car value based on historical sales data.
• Physical Condition Scoring: Adjusts the base price using 10 physical factors (body damage, paint, interior, accidents, flood history, etc.).
• Responsive UI: Simple UI that works on both desktop and mobile.
• Indonesian Market Adjustments: Converts the model's base currency (INR) to IDR with local inflation and brand-specific adjustments.

Local Setup

1. Navigate to this directory:

   cd web_app
   

2. Set up a virtual environment:
   • On Windows:

     python -m venv venv
     venv\Scripts\activate
     

   • On Mac/Linux:

     python3 -m venv venv
     source venv/bin/activate
     

3. Install dependencies:

   pip install -r requirements.txt
   

4. Run the application:

   python app.py
   

5. Open http://127.0.0.1:5000 in your browser.

Pricing & Condition Scoring

The final price is calculated as:

Final Price = Base Price * (1 - Total Deduction Percentage)

The system uses 10 factors to calculate the deduction percentage:

1. Body Damage Severity: 0% to -28%
2. Number of Dents: -2% per dent (Max -15%)
3. Paint Condition: 0% to -13%
4. Interior Condition: 0% to -15%
5. Accident History: 0% to -40%
6. Flood Damage: 0% to -50%
7. Engine & Mechanical: 0% to -30%
8. Tire Condition: 0% to -5%
9. Service History: +3% bonus to -6% deduction
10. Modifications: 0% to -8%

Indonesian Market Adjustments

Since the base model was trained on Indian market data (in INR), we adjust it for the Indonesian market:

• Exchange Rate: 1 INR = Rp 187.6
• Inflation/Depreciation: +12% adjustment
• Market Multipliers:
  • Luxury Brands (Mercedes, BMW, etc.): 1.95x
  • Popular Brands (Toyota, Honda, Daihatsu, Suzuki, Mitsubishi): 1.60x
  • Other Brands: 1.45x Prices are calibrated against listings on OLX Indonesia, Mobil123, and GridOto.

Model Validation

If a user inputs a brand/model that is not in the database, the system will perform a general segment approximation. A warning banner will be displayed on the result page to indicate that the prediction is an approximation.