Madrid:
The Spanish Formula One racing team said on Thursday that the decision "is due to the new direction that the team has taken" and thanked Kolles "for his work and dedication."
Investment firm Thesan Capital bought HRT in July.
The team has yet to win a point in two seasons in F1.
Topics mentioned in this article
HRT
Narain Karthikeyan
R Chandok
Luis Perez-Sala
Formula 1
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