Melbourne - Four-times champion Sebastian Vettel sounded an early alarm bell for Ferrari at Formula One's season-opening Australian Grand Prix, saying he was lacking confidence in his car after a disappointing run in Friday practice.
After being pipped by Lewis Hamilton's Mercedes in the first session at Albert Park, Vettel was a glaring 0.873 seconds slower than the front-running Briton in the second practice and complained of handling problems on the team radio.
The German skidded into trackside grass at one corner and said the car was still wobbly at turns on another run after taking it back to the garage for work.
His new team-mate Charles Leclerc also had a big spin late in FP2 and managed only the ninth fastest time in an underwhelming debut for the Scuderia.
With Ferrari having been slightly quicker than Mercedes at winter testing, pundits were quick to suspect the team were keeping their true pace under wraps for Saturday qualifying.