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P1racenews AI automatic summary:
Audi F1 suffer DOUBLE blow in Barcelona testing
The Audi F1 team faced testing setbacks in Barcelona with Nico Hulkenberg encountering issues on day three.
Teams have limited running days from January 26 to 30, with Audi having technical problems on their first two days.
Hulkenberg brought out a red flag on Wednesday, halting testing between Turns 9 and 10.
Despite the challenges, Mercedes and Red Bull have shown promising reliability, putting in significant laps.
Audi will need to address their reliability concerns quickly as they adapt to the new regulations in their debut F1 season.
