However, Amoco and BP merged in 1998, combining their worldwide operations into a single organization. Overnight, the new company, BP Amoco, became the largest producer of both oil and natural gas in the US. In 2001, BP Amoco changed its brand to simply 'BP'.

Although the Amoco Corporation merged in 1998 into BP Amoco, the Amoco name was resurrected in 2017 as a brand that service station owners could choose to use when they purchased supplies from BP in selected areas of the United States. Merged with BP, becoming a brand, but resurfaced in 2017 selling BP fuel.

In 2017, BP announced that it was reintroducing the Amoco brand to the United States, which had not been seen in over a decade. The brand was brought back to give BP marketers a “complimentary retail offering in cities where there could be additional growth opportunities.

In 1998 British Petroleum acquired Amoco for $43.2 billion. The merger propelled the combined company into the front ranks of the world oil industry. Starting in 2000, with the transformation of BP Amoco into BP PLC, the Amoco brand was replaced at service stations by the BP brand.