Testing was pretty rough. Red Bull put in like 8 laps or something, followed by a turbo fire. Vettel was one of the slowest cars to set a time, but early testing isn't always about setting fast laps. Anyway, the fast times seemed to be set by Button and Kimi, both of whom managed 40+ laps. A few other surprises in the list of times as well, like Bottas for Williams. How much sandbagging and slow development work was going on versus trying to make a splash with a fast lap isn't clear.
1 J Button McLaren 1m24.165s 43 laps
2 K Raikkonen Ferrari 1m24.812s +0.647s 47 laps
3 V Bottas Williams-Mercedes 1m25.344s +1.179s 35 laps
4 N Rosberg Mercedes 1m25.588s +1.423s 97 laps
5 S Perez Force India-Mercedes 1m28.376s +4.211s 37 laps
6 E Gutierrez Sauber-Ferrari 1m33.270s +9.105s 53 laps
7 M Ericsson Caterham-Renault 1m37.975s +13.810s 11 laps
8 S Vettel Red Bull-Renault 1m38.320s +14.155s 8 laps