In the automotive industry, Japanese manufacturers have agreed that no standard vehicle would have more than 276 hp (206 kW; 280 CH); The agreement ended in 2005.  German manufacturers limit the maximum speed of high-performance sedans (berlines) and breaks to 250 km/h.   When the Suzuki Hayabusa motorcycle exceeded 310 km/h in 1999, fears of a European ban or regulatory intervention led Japanese and European manufacturers to limit to 300 km/h at the end of 1999 See list of the fastest series bikes. The end result may, in many cases, be higher cost or lower quality products for consumers. Worse, a gentlemen`s agreement can be used as a means of promoting discriminatory practices, as in a “network of old boys.” A gentleman`s agreement, which is rather a point of honour and etiquette, relies on the indulgence of two or more parties for the performance of pronounced or unspoken undertakings. Unlike a binding contract or a legal agreement, there is no legal remedy for violation of a gentlemen`s agreement. Gentlemen`s agreements were a widespread discriminatory tactic, which would have been more common than restrictive alliances to maintain the homogeneity of upper-class neighborhoods and suburbs in the United States.  The nature of these agreements made it extremely difficult to prove or follow them, and they were long after the U.S. Supreme Court decisions in Shelley/.
Kraemer and Barrows v. Jackson.  A source indicates that the gentlemen`s agreements are “probably still in place” but that their use has declined sharply.  Gentlemen`s agreements can also be found in trade agreements and international relations. One example is the 1907 Gentlemen`s Agreement, in which the United States and the Japanese Empire addressed immigration from Japan and the mistreatment of Japanese immigrants to the United States. The agreement, which was never ratified by Congress, saw Japan stop issuing passports to people who wanted to immigrate to America to work. The United States, on the other hand, would no longer allow discrimination and segregation of Japanese citizens residing in America. A report by the U.S. House of Representatives detailing its United States Steel Corporation investigation stated that in the 1890s there were two general types of associations or bulk consolidations between steel and ferrous interests in which different groups owned ownership, as well as a high degree of independence: the “pool” and the “Gentleman`s Agreement.”  The latter type lacked a formal organisation to regulate production or prices or forfeiture rules in the event of infringement.  The effectiveness of the agreement relied on members to meet informal commitments.  In 1890, the U.S.
government banned gentlemen`s agreements in trade and trade relations between nations. On the west coast, an intense anti-Japanese atmosphere developed. U.S. President Theodore Roosevelt did not want to anger Japan by passing laws banning Japanese immigration to the United States, as had happened with Chinese immigration.