Haas boss Guenther Steiner says Romain Grosjean and Kevin Magnussen need to use "common sense" after recent battles.

Tensions are high between the pair following wheel-to-wheel contact at the past two races. At Silverstone, both cars would retire after touching on Lap 1, while at Hockenheim, a move risked ruining their strongest result in quite some time.

Ultimately, it wouldn't, as Grosjean and Magnussen finished seventh and eighth, but it has put Steiner in a tough position when it comes to regulating his two drivers.

“I need to think about it but there is not many options,” said Steiner on whether he may stop them from racing. “At some stage, something needs to be done.

“I normally try to avoid it, as you know I like racing, I think that’s what we should be doing, but if it works always against us I can’t keep it happening.

“We were lucky that nothing [happened], they both were there, but it could happen again.”

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After Silverstone, there was even speculation Steiner was considering axing Grosjean but that proved to be false although the Frenchman's seat in 2020 is very uncertain.

But the Haas chief is also reluctant to impose limits because he feels both drivers should simply know better.

“It wasn’t so obvious, and again – why would you run into any other car? Common sense needs to come in play here.

“If I have to take every overtake manoeuvre, call it myself, then I’d better go and drive myself. And that will not be quick.”

All this is also distracting Haas and Steiner away from their main problem, a lack of race pace, with the two drivers running two different spec cars to try and find a solution.

“It’s a headache,” he admitted. “It doesn’t help to find a solution, doesn’t help to be always constructive.

“You’re thinking about things I shouldn’t be thinking about. I should be thinking about everything else, and the more you can focus on your real issue, the better it would be.

“But you can’t keep on, every race, running into each other. It’s getting old.”