McLaren's Lewis Hamilton ended the Jerez F1 test fastest after setting the best time on the final day of testing.
Hamilton set a 1min 19.583sec best to top the day's times, and the overall combined times over the four days by 0.336sec from Torro Rosso driver Jaime Alguersuari.
Alguersuari's pace backed up the times set by team-mate Sebastien Buemi earlier in the test. Buemi's best of 1:20.026 on day two was good enough for fourth overall.
This pair sandwiched Kamui Kobayashi, who continued Sauber's strong testing form by setting the third fastest time on day two.
Seven-time world champion Michael Schumacher set the eighth fastest time of the test for Mercedes.
F1 newcomer Virgin Racing finally got in some serious running on the final day of the test, Lucas Di Grassi completing 63 laps, ending the final day just over three seconds off the fastest pace.
Overall test times
1 Hamilton (McLaren) 1:19.5832 Alguersuari (Toro Rosso) 1:19.9193 Kobayashi (Sauber) 1:19.9504 Buemi (Toro Rosso) 1:20.0265 Sutil (Force India) 1:20.1806 Barrichello (Williams) 1:20.3417 Kubica (Renault) 1:20.3588 Schumacher (Mercedes) 1:20.6139 Button (McLaren) 1:20.61810 Hulkenberg (Williams) 1:20.629