On auto brand apps, the No. 1 feature was the vehicle brochure or catalog, available in 68% of studied apps. This feature presumably allows auto shoppers to look through an auto brand’s full set of car models. But the next most popular features were useful for drivers in particular, rather than shoppers: Connected car utility features were available in 40% of apps, followed by the reference manual, offered by 30%. And 25% of auto brand apps provided roadside assistance integration. Read the rest at eMarketer.