This D3.js bar chart visualizes the distribution of horsepower for German car brands using a histogram. The chart bins horsepower values into equal-width intervals along the x-axis, with bar heights representing the count of vehicles in each range. Built with an SVG rendering, the visualization features a blue color scheme and includes axis labels and a title. Interactive tooltips appear on hover, displaying the specific horsepower range of each bar. The implementation uses d3.csv for data loading, d3.histogram for binning, and d3.scaleLinear for both axes.