My Shiny App: MPG Predictor

Your Name
May 21, 2026

Introduction

  • This app predicts a car's MPG based on weight and cylinders
  • Built with R Shiny, deployed on shinyapps.io
  • Uses the built-in mtcars dataset
  • Aimed at users curious about vehicle fuel efficiency

How It Works

  • User selects car weight via a slider (1.5–5.5)
  • User selects number of cylinders (4, 6, or 8)
  • A linear regression model predicts MPG
  • Output: predicted MPG + visualization

The Model (live R code)

model <- lm(mpg ~ wt + factor(cyl), data = mtcars)
predict(model, data.frame(wt = 3.0, cyl = 6))

       1 
20.11837

Try It Yourself!