I have a dashboard which display different charts as equal sized widgets.The issue with my current UI is when there is more data labels and data sets the charts looks compressed.
Try showing the 5 top total counts by make, and allow them a drilldown (or expand the chart in place) for further examination.
There comes a point of overload where you're showing everything, but they're seeing very little.
Since this is a dashboard, a common pattern is to show the top 3 -7 of a category. You can start with top 5, so the chart is uncluttered, and have a high enough color contrast set so it's easy to pick out: