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China may try to dress the wounds of global carmakers, but it will be able to provide little more than a Band-Aid.

The country’s top economic-planning body is considering whether to cut in half the 10 percent tax that customers pay on new cars there, Bloomberg reported on Monday, citing unidentified sources. That might help prop up falling demand, but the industry has bigger problems.

Sputtering sales in China are one of the reasons shares in major carmakers have taken a hit this year. The country is now the world’s largest vehicle market, so last month’s almost 12 percent drop in sales compared with September 2017 — the worst decline in seven years — was bound to worry local and foreign manufacturers alike.