FRANKFURT -- German new-car registrations rose 6.2 percent in May to 299,992 vehicles, official statistics from the country's motor vehicle department KBA showed on Tuesday.
For the first five months, registrations grew 1.1 percent to 1,360,168 units, the KBA added.
"The automobile market's engine has started up," KBA President Ekhard Zinke said in a statement. "Confidence grows with every month."
Both results confirmed Friday's unofficial estimates from German automobile industry association VDA.
Gains were paced by Volkswagen AG, with VW brand registrations up 10.7 percent in May while those of its Audi brand rose 29.6 percent.
Rival BMW AG also put in a strong show, with registrations of BMW and Mini brands together up by more than 27 percent.
Opel, GM's German brand, rose 2.5 percent last month, but its 5.1 percent increase through May to 144,749 units still outperformed the 0.3 percent rise in VW brand registrations.
With 245,559 cars registered in the first five months, VW remained the most popular brand with an 18.1 percent market share in Germany, compared to 10.6 percent for Opel, its closest rival.
The strongest gain continued to come from South Korean upstart Kia, which enjoyed nearly 58 percent growth in registrations in May.
DaimlerChrysler, however, suffered a weak May, as registrations of new Mercedes-Benz luxury cars and Smart brand subcompacts each fell by 17.4 percent.
Registrations of Chrysler and Jeep brand cars fell nearly 48 percent last month.