Plaintiffs lawyers told a federal judge in California on Thursday that he is underestimating the number of attorneys who will be needed to steer the multidistrict litigation against Toyota Motor Corp. over sudden unintended acceleration.

Each of the 70 or so lawyers lining up to address U.S. District Judge James V. Selna received no more than five minutes to convince him that they deserved a seat on one of at least three prominent committees in the litigation.