October 27, 2026

Overview

  • Dataset: mtcars (1974 Motor Trend road tests, 32 cars)
  • Question: how do weight, horsepower and cylinders affect fuel efficiency (MPG)?
  • All plots below are interactive (hover, zoom, pan, toggle legend)

Weight vs MPG (3D, coloured by cylinders)

MPG by Transmission and Cylinders

Takeaways

  • Heavier, higher-horsepower cars get noticeably lower MPG
  • 4-cylinder cars are the most fuel efficient
  • Manual transmissions tend to have higher MPG within each cylinder group

Thank You