Kimi Raikkonen headed a Ferrari one-two in final practice at the Spanish Grand Prix with Sebastian Vettel 0.242 of a second off his teammate, turned the tables on Mercedes after Lewis Hamilton had set the pace in both Friday sessions.
Hamilton's best lap time was 0.381 of a second down on Raikkonen's best, with Valtteri Bottas a further 0.273 of a second off after engine problems forced his team to break curfew to change power units.
The Red Bull pair of Max Verstappen and Daniel Ricciardo were fifth and sixth respectively. The much anticipated upgrades to their car yet to show much improvement. Verstappen ending the session eight tenths off the top time.
Nico Hulkenberg and Renault continued to show handy pace, the German ending the hour session seventh quickest albeit a whopping 1.4 seconds off the benchmark time set by Raikkonen.
Felipe Massa was eighth in the Williams ahead of Carlos Sainz in the Toro Rosso.
McLaren and Alonso put behind them a miserable opening day to finish tenth on the timing screens, and provide a glimmer of joy to local fans supporting the Spanish driver.
Report in progress...
Spanish Grand Prix, Circuit de Catalunya - Free Practice 3, Best Lap Times
| POS | NO | DRIVER | CAR | TIME | GAP | LAPS |
| 1 | 7 | Kimi Räikkönen | FERRARI | 1:20.214 | | 20 |
| 2 | 5 | Sebastian Vettel | FERRARI | 1:20.456 | +0.242s | 7 |
| 3 | 44 | Lewis Hamilton | MERCEDES | 1:20.595 | +0.381s | 12 |
| 4 | 77 | Valtteri Bottas | MERCEDES | 1:20.868 | +0.654s | 7 |
| 5 | 33 | Max Verstappen | RED BULL RACING TAG HEUER | 1:21.025 | +0.811s | 14 |
| 6 | 3 | Daniel Ricciardo | RED BULL RACING TAG HEUER | 1:21.249 | +1.035s | 15 |
| 7 | 27 | Nico Hulkenberg | RENAULT | 1:21.670 | +1.456s | 13 |
| 8 | 19 | Felipe Massa | WILLIAMS MERCEDES | 1:21.746 | +1.532s | 19 |
| 9 | 55 | Carlos Sainz | TORO ROSSO | 1:21.835 | +1.621s | 19 |
| 10 | 14 | Fernando Alonso | MCLAREN HONDA | 1:22.093 | +1.879s | 16 |
| 11 | 8 | Romain Grosjean | HAAS FERRARI | 1:22.128 | +1.914s | 21 |
| 12 | 20 | Kevin Magnussen | HAAS FERRARI | 1:22.214 | +2.000s | 12 |
| 13 | 11 | Sergio Perez | FORCE INDIA MERCEDES | 1:22.237 | +2.023s | 19 |
| 14 | 31 | Esteban Ocon | FORCE INDIA MERCEDES | 1:22.297 | +2.083s | 22 |
| 15 | 26 | Daniil Kvyat | TORO ROSSO | 1:22.391 | +2.177s | 15 |
| 16 | 9 | Marcus Ericsson | SAUBER FERRARI | 1:22.513 | +2.299s | 20 |
| 17 | 18 | Lance Stroll | WILLIAMS MERCEDES | 1:22.574 | +2.360s | 19 |
| 18 | 30 | Jolyon Palmer | RENAULT | 1:22.755 | +2.541s | 13 |
| 19 | 2 | Stoffel Vandoorne | MCLAREN HONDA | 1:22.853 | +2.639s | 15 |
| 20 | 94 | Pascal Wehrlein | SAUBER FERRARI | 1:22.974 | +2.760s | 19 |