The team's struggles continued as the championship moved to Brazil for the penultimate round, with Alonso stopping twice on the circuit during free practice with a recurring engine fault that forced him to miss qualifying. Button and Alonso finished the race in fifteenth and sixteenth place respectively, which became fourteenth and fifteenth when Felipe Massa was disqualified for a tyre pressure irregularity. Button later noted that the speed deficit of the RA615H around the Interlagos circuit relative to the other engines was "scary" despite Honda's extensive development programme. By the time the season came to a close in Abu Dhabi, McLaren had completely shifted the MP4-30's development so that the car became a testing platform for the 2016 season, with "more than half" of the parts being considered experimental, including a brand-new configuration for the rear suspension geometry. Despite an expected speed deficit on the long straights of the Yas Marina Circuit—with the MP4-30 recording speeds some slower than the fastest cars through the speed trap—and minor contact with Valtteri Bottas in the pit lane, Button was complimentary of the car in his drive to twelfth, describing it as "the best it had felt all year". Alonso went on to finish seventeenth after receiving a drive-through penalty for his role in causing a collision with Pastor Maldonado and Felipe Nasr on the opening lap. McLaren used Alonso's race as a chance to experiment with full and continuous deployment of the RA615H's Energy Recovery Systems—the first time the team had done so under race conditions—which saw Alonso set the third-fastest lap of the race, less than three tenths of a second slower than the fastest lap of the race recorded by Lewis Hamilton.