This interactive bubble chart visualizes the relationship between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s position encodes horsepower and torque on the x- and y-axes, while its radius represents highway MPG and its color distinguishes automotive brands. Built with D3 v7 and SVG, the chart includes hover tooltips that display the make name, plus legends for both bubble size and color categories. The visualization loads data from a CSV file and uses d3.scaleLinear, d3.scaleOrdinal, and d3.interpolateTurbo for encoding.