Using stepwise methods in Linear Regression, you have selected a "best" model for predicting motor-vehicle sales. With this model, you found two vehicle models that were underperforming in the market, while no vehicle was clearly overperforming.

Diagnostic plots of residuals and influence statistics indicated that your regression model may be adversely affected by unusually large, expensive cars like the SL-Class. Hopefully, by log-transforming wheelbase and price in thousands in future analyses, the SL-Class will no longer be influential.