Ferrari's German driver Sebastian Vettel (R) and Ferrari's Finnish driver Kimi Raikkonen race during the Abu Dhabi Formula One Grand Prix at the Yas Marina circuit on November 29, 2015. AFP PHOTO / KARIM SAHIB / AFP / ANDREJ ISAKOVIC (Photo credit should read ANDREJ ISAKOVIC/AFP/Getty Images)

Ferrari's Sebastian Vettel has topped the time sheet on both of the opening two days of F1 testing in Barcelona.

After a disappointing 2015, Ferrari look set to enjoy a highly improved season, with Vettel's fastest lap of 1:22.810, 0.7 seconds quicker than second placed Daniel Riccardio.

Sergio Perez rounded out the top three with 1:23.650.

Day two testing:

1. Sebastian Vettel, Ferrari, ultrasoft tyres, 1:22.810, 126 laps;

2. Daniel Ricciardo, Red Bull, ultrasoft tyres, 1:23.525, 112 laps;

3. Sergio Perez, Force India, supersoft tyres, 1:23.650, 101 laps;

4. Nico Rosberg, Mercedes, medium tyres, 1:24.867, 172 laps;

5. Marcus Ericsson, Sauber, soft tyres, 1:25.237, 108 laps;

6. Esteban Gutierrez, Haas, soft tyres, 1:25.524, 79 laps;

7. Valtteri Bottas, Williams, soft tyres, 1:25.648, 134 laps;

8. Pascal Wehrlein, Manor, soft tyres, 1:25.925, 71 laps;

9. Fernando Alonso, McLaren, soft tyres, 1:26.082, 119 laps;

10. Jolyon Palmer, Renault, soft tyres, 1:26.189, 42 laps;

11. Max Verstappen, Toro Rosso, soft tyres, 1:26.755, 121 laps.