This bar chart shows the average sales volume for each BMW model, computed from a CSV dataset of car sales spanning 2010 to 2024. The visualization uses D3.js to group the data by model and calculate the mean sales volume, then renders these aggregates as a series of rectangles. The chart is built with SVG, with axes rotated for readability, and bars that highlight on hover. The visualization is implemented as a React component that loads data asynchronously.