Audi A4 sales soar 32% year-on-year in Germany in June. * See the Top 50 All-brands and Top 330 All-models by clicking on the title * New car sales in Germany gain 4.1% year-on-year in June to 341.308 units, lifting the year-to-date tally up 2.9% to 1.839.031. Brand leader Volkswagen flatly be