Auto dealerships have remained closed while buyers have stayed away to prevent the spread of the deadly virus.
Nationwide auto sales slumped to 96% in the first week of February to a daily average of just 811 vehicles.
The China Passenger Car Association (CPCA) said it hoped sales would pick up as more showrooms reopened.
There was barely anybody at car dealers in the first week of February as most people stayed at home, said CPCA secretary general Cui Dongshu.