After Sebastian Vettel's Jerez testing opportunities were cut short on Wednesday, his team-mate Daniel Ricciardo suffered a similar fate during his first stint inside a Red Bull car on Thursday.
The Australian completed just half a lap in the RB10 before he came to halt when smoke started escaping from the rear of the car.
After he got out of the car and marshals blasted the car with fire extinguisher foam, the RB 10 was put on a flatbed truck and was carried off the track to the pits.
The issue with Ricciardo's car seemed minor, however, and he completed two laps shortly after before returning to the pits once more.
Earlier in the week, Vettel managed only 11 laps over his two days of testing due to delays caused by a part being fitted incorrectly and a Renault energy store issue.