Separate settlements have been reached between black consumers involved in a class-action lawsuit and three banks and Honda Motor Co.’s financial arm. The lawsuits accused the lenders of discriminatory auto-lending practices.

According to a Wall Street Journal report, J.P. Morgan Chase & Co.’s Bank One unit, Bank of America Corp., U.S. Bancorp and American Honda Financial Corp. have agreed to establish tighter caps on loan markups.

In addition, the four lenders have agreed to offer car loans with no markups to as many as 2.4 million minority consumers.

A study used by plaintiffs’ lawyers in a similar recent suit found that African-American car buyers paid loan markups averaging $1,229 each. The average for white car buyers with similar credit histories was $867 a loan.

Although the big financial institutions deny any wrongdoing, they have agreed to establish special lending programs that will offer billions of dollars in “no markup loans” to blacks and Hispanics.

In the latest settlements, the banks each agreed to a three-step method of limiting markups. Each of the banks agreed that, on bank loans of up to 60 months, markups will be capped at 2.5 percent.

The markup on loans with terms between 61 and 71 months will be capped at 2 percent, and loans with terms of 72 months or more will have markup caps of 1.75 percent, the Wall Street Journal reported.