This dashboard visualizes BMW sales data from a CSV file, showing annual sales performance, price evolution, top models, regional sales, and market classification. The main chart is a stacked bar graph using d3.scaleBand and d3.scaleLinear to display yearly sales volume by model, with interactive hover tooltips that highlight specific segments. A region selector filters the dataset, and KPI cards summarize key metrics like total revenue and average selling price. The project uses D3 v7 for SVG rendering and data manipulation with d3.sum, d3.group, and d3.rollups.