An Automotive OEM requested support from Sound Answers to perform vehicle measurements for powertrain and road noise on a 4WD chassis dynamometer. Five vehicles, OEM and competitive, were tested. Acoustic measurements were made at occupant positions within the vehicles for a variety of operating conditions as specified by the OEM to measure powertrain and road noise. Measurements were taken on a 4WD NVH chassis dynamometer, using both smooth rolls and rough road shells to simulate on-road surface conditions. The data collected was delivered to the Automotive OEM so that they could utilize it for benchmarking and target setting purposes.