But there's doubt in Washington and Beijing whether China is willing to water down its plans to match and exceed US industrial strength, which are one of the root causes of the current fight.
China's top leaders are expected to meet next week to decide next year's economic policies. Their focus will be on how they propose to sustain stable growth when faced with both uncertainty from the trade war and from the the slowing domestic economy.
The temporary tax reduction for US car imports comes as China heads for its very first annual vehicle sales decline in 28 years amid the trade war and an economic slowdown that's undermining consumption momentum.
Car sales in China have fallen for six straight months after decades of almost uninterrupted growth.
While there were other factors, the tit-for-tat jabs between the world's biggest economies have played a role. The move by China would reduce tariffs on cars made in the US to 15 per cent from the current 40 per cent, in line with what other countries pay.
China's decision may provide a respite for American carmakers such as Tesla Inc.. German carmakers such as BMW AG and Daimler AG would also benefit as they bring to China US-made cars.
German carmakers BMW and Daimler have been hardest hit by the additional levies, shipping large numbers of sport utility vehicles from plants in the US to China. Six of the top ten vehicles exported from the US to the world's biggest car market are from the two German brands, according to forecaster LMC Automotive.
BMW said the punitive levies caused a hit of €300 million ($498.7m) to its bottom line during the second half of the year. The trade tensions were a key factor in both carmakers cutting profit forecasts for the year.
BMW and Daimler, which import thousands of SUVs into China from plants in the US, reversed earlier losses tied to a weak European auto sales report. BMW rose 0.2 per cent, after falling as much as 2.4 per cent. Daimler's decline narrowed to 0.6 per cent from as much as 2.8 per cent earlier. Volkswagen AG was down 1.2 per cent, after dropping 2.9 per cent.
Foreign carmakers have long pleaded for freer access to China's auto market, while its own manufacturers are trying to expand abroad. In April, China announced a timetable to permit foreign companies to own more than 50 per cent of local vehicle-making ventures.
Longer-term, China has a lot to gain from free trade in autos as manufacturers such as Guangzhou Automobile Group Co. and Geely Automobile Holdings Ltd. look to move overseas. The US currently charges a 27.5 per cent tax on imported cars from China after adding a 25 per cent additional tariff during the trade row.