New-car sales in Germany fell 50 percent in May -- only a slightly better figure than April -- even though dealerships were able to sell cars for the whole month after coronavirus restrictions were lifted.
Registrations were 168,148, according to data released by the KBA transport authority on Thursday.
Dealerships started to reopen for sales on April 20 after restrictions imposed to curb the spread of coronavirus were eased. Registrations declined by 61 percent in April.
Reinhard Zirpel, head of the VDIK importers association, said the reopening of the dealerships "had almost no positive effect on demand."
"The state of the passenger car market remains dramatically bad," Zirpel said in a statement.
Zirpel said he hoped an economic stimulus package announced by the German government on Thursday will encourage people into showrooms.
Berlin's recovery plan doubles incentives for full-electric cars and plug-in hybrids but contains no direct incentives for buyers of gasoline and diesel cars. The ZDK dealers association said the package is "not even a drop in the ocean" in helping to move unsold new cars worth around 15 billion euros in dealerships.