With seven minutes remaining, Alice Powell would stop her car on the entry to the Schöller S with a gearbox failure, and having already sat out most of the session with technical issues would start from the back of the grid.
Hawkins would eventually fall to sixth and would be unable to set a better time as Shea Holbrook would suffer broken suspension at the Grundig Kehre with a minute remaining, bringing out the yellow flags and effectively ending the session.
Wohlwend would be caught on the outside of the opening hairpin, and as she slowed to avoid hitting the barrier Rdest bumped into the Liechtensteiner's rear-left wheel, dislodging the Pole's front wing.
Rdest was then given a mechanical black flag for the broken wing, before both she and Holbrook were handed drive-through penalties for pit lane speeding - dropping both drivers a lap down.
With a handful of laps remaining, Hawkins slowed dramatically and pitted with a spark plug failure, with Alice Powell suffering a similar fate behind her having the fuel pump break after running as high as ninth from last on the grid.
García took a dominant win followed by Visser, who survived a last-lap lunge from Chadwick which would see the Briton finish third, with Wohlwend maintaining fourth ahead of Kimiläinen who was stuck in fifth as a lack of straight-line speed would see her unable to take advantage of the slipstream.