Pierre Gasly's Toro Rosso 'lost power' right at end of Brazilian GP

While team-mate Brendon Hartley retired just over halfway through the race - continuing Toro Rosso's recent run of reliability woes - Gasly crossed the line in 12th, a lap down on race winner Sebastian Vettel.

But Gasly's car also hit trouble within sight of the flag.

"I knew there was something wrong going on because every lap they were like 'yeah, oil transfer, oil transfer' - and I knew we had old-spec MGU-K so I was like 'fuck, hopefully it's going to last until the end'," Gasly said.

"And then actually 200 metres before the finish line I was full throttle and I lost completely the power on the car.

"I was like 'bup bup bup bup', I crossed the line, I think at 60km/h, and I was like 'what should I do, what should I do?' and they just told me to park the car.

"I don't know exactly what was the problem but there was definitely something."

Despite the final-lap close call, Gasly felt the Interlagos race was the best of his four F1 starts so far.

"It was good," he said. "We knew it would be difficult starting from 19th.

"But watching the races from the past few years, I knew the start was key if we wanted to have a decent race.

"So I went on the outside into Turn 1, which worked out pretty well, I overtook maybe three cars at Turn 1, then one [car into] Turn 2, then after all the mess in front of me I just stayed flat out and tried to avoid everyone.

"I would say in terms of performance we extracted everything we could.

"At the beginning of the first stint I could stay quite close to Carlos [Sainz Jr] - and then after they picked up the pace and we were quite limited with the degradation, so I don't think we could've done much better.

"Finishing 16 seconds behind the Renault, I think definitely our best race and best performance since I arrived in Malaysia."