The FIA has confirmed both Haas Formula 1 drivers Kevin Magnussen and Romain Grosjean are under investigation by the stewards for the use of 'driver aids' at the Hungarian Grand Prix.

Haas picked up its first points of the season with Magnussen finishing in ninth, while Grosjean could only manage 15th.

The American outfit was the only team to gamble on dry tyres by pitting its drivers shortly after the formation lap and thus being forced to start from the pit lane. 

Magnussen and Grosjean were running as high as third and fourth, but quickly fell down the order as the faster cars made their way through the field.

Haas has been called to the stewards for an “alleged breach of Article 27.1 of the FIA Formula 1 Sporting Regulations, driver aids during formation lap.” 

The aforementioned regulation states: "The driver must drive the car alone and unaided.''

Reflecting on his first points of the season, Magnussen said: “I’m so happy. The team made an amazing call before the beginning of the race – on the formation lap, to call for the slicks.

“It was really strong for them to give me that trust, to put me out on dry tires and in conditions that weren’t easy. It was pretty risky, but it worked out. The pace was there and having started from the pit lane, after a few laps I was in P3.

“I knew that wouldn’t be our final placing, but it was amazing to be up there in the race. I just tried to hang on to it as much as I could. I kept working with the team regarding where realistically we were going to be. In the end it was P9 – I held on to it and we had opened the gap to a Ferrari and then kept the McLaren away as well.

“It shows what a good car we had in the race. It’s proved that the team has done an amazing job even though we’ve been struggling a little bit in qualifying.”