Haas F1 Team drivers Romain Grosjean and Kevin Magnussen appear to be engaged in a bit of flattery and reciprocity lately.

Magnussen recently vaunted the talent of his French team mate, saying that on his day, Grosjean was as fast as Jenson Button, who raced alongside the Dane at McLaren in 2014.

Grosjean just handed back the compliment, claiming Magnussen is the best driver he's had on the other side of his garage since Fernando Alonso.

Indeed, Grosjean sampled firsthand the two-time world champion's skills when the two were paired together at Renault in 2009, when Romain initiated his career in F1.

Since then he has shared teams with Kimi Raikkonen, Pastor Maldonado and Esteban Gutierrez.

"Honestly, he (Magnussen) is super fast," Grosjean told the Danish newspaper Ekstra Bladet in Austria.

"People have had the wrong perception of him, and he has surprised me.

"He is the best teammate I've had through my 'second' career in Formula 1," he added.

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