49 C.F.R. § 585.116
(a) General reporting requirements. Within 60 days after the end of the production years ending August 31, 2013, August 31, 2014, and August 31, 2015, each manufacturer must submit a report to the National Highway Traffic Safety Administration concerning its compliance with Standard No. 216a (49 CFR 571.216a) for its passenger cars, multipurpose passenger vehicles, trucks, and buses with a gross vehicle weight rating of less than 2,722 kilograms (6,000 pounds) produced in that year. Each report must —
(4) Vehicles produced by more than one manufacturer. Each manufacturer whose reporting of information is affected by one or more of the express written contracts permitted by S8.6.2 of Standard No. 216a (49 CFR 571.216a) must: