Hartley gets new permanent F1 number for Mexico

Brendon Hartley will switch to a new, permanent Formula 1 car number for this weekend's Mexican Grand Prix after using Toro Rosso's reserve number for his debut last weekend.

Porsche LMP1 driver Hartley was drafted in by Toro Rosso to make his F1 debut in the United States Grand Prix last weekend in place of Pierre Gasly, who was ruled out due to a clash with the Super Formula finale at Suzuka.

Hartley enjoyed a solid first outing for Toro Rosso, finishing 13th, and was swiftly confirmed to be returning for the final three races of the season in place of Daniil Kvyat, who will not return to the team.

Having raced with #39 in Austin, Toro Rosso's designated reserve number, Hartley will now switch to #28 from this weekend's race at the Autodromo Hermanos Rodriguez.

""I'm so excited to head to Mexico for my second Formula 1 Grand Prix. It was a steep learning curve in Austin last week, so I'm looking forward to putting some of the lessons learnt into practice this weekend here in Mexico," Hartley said.

"It's a tricky venue for the engineers, as the high altitude plays havoc on downforce and cooling, but from a driving point of view it's a great track and one I really enjoy."

#28 was previously used by Will Stevens during his sole full season in F1 with Manor back in 2015.