Why not provide separate results for each powertrain?

People often ask me why results for each model are not broken out by powertrain. For example, the VW Jetta, Rabbit, and GTI can be purchased with either a five-cylinder gas engine, a four-cylinder turbocharged gas engine, a four-cylinder turbodiesel, or a V6 gas engine. Transmissions include a manual, an automatic, and a DSG. Shouldn’t repair rates be expected to… More →