It is Canada that has proven the stumbling block in renegotiating NAFTA.
Canada has already privately told the United States it is willing to agree to US auto demands, one official said, because Canada would benefit from them along with the United States.
Mexico's Economy Minister Ildefonso Guajardo said the country was getting close to overcoming sticking points with the United States over the renegotiation of the North American Free Trade Agreement (NAFTA).
He said any deal with must take care of American autoworkers and farmers, but he praised the new president of, calling him "an absolute gentleman".
Trump slapped Canada and other allies with steel and aluminum duties, which led to retaliatory levies from Ottawa. He says the country's "Tariffs and Trade Barriers are far too high" and is threatening to "tax cars if we can't make a deal!"
Francisco Cervantes spoke with Xinhua before departing for Washington to take part in the ongoing trade negotiations between Mexico, Canada and the United States.
Adam Austen, a spokesman for Canadian Foreign Minister Chrystia Freeland, who is leading NAFTA trade talks for Canada, said the minister was in regular contact with her Mexican and US counterparts.
"We're leading to a negotiating environment that's not going to allow parties to make concessions", he said.
Erdogan blames "plot against Turkey" for plunging lira
Although Mr Erdogan struck a defiant tone, his foreign ministry called for diplomacy and dialogue to solve problems with the US. The United States is the biggest destination for Turkish steel exports, with 11 percent of the Turkish export volume.
The official said that Canada's focus remains unchanged and that they're glad that bilateral issues are being sorted out between the USA and Mexico.
"We are very positive about closing the deal", Cervantes added.
Ujczo said discussion has focused narrowly on what tariffs to impose on those Mexican-made cars that don't comply with the proposed "rules of origin".
"It's trade negotiating's summer performance of Groundhog Day", he said, "another day of guessing when terms that don't change will include guests that aren't there".
At the close of the third consecutive week of discussions in Washington, the official said it remained possible to reach a deal by the end of the month.
But the US side was sticking to a hard stance in the final stretch of the year-old NAFTA talks, trying to extract concessions as another late August deadline for a deal approaches, one industry representative said.
The U.S. -Mexico talks for a reworked North American Free Trade Agreement resumed three weeks ago, without Canada, after negotiations involving all three members of the $1.2 trillion trade bloc stalled in May.