Jenson Button insists he believes McLaren is making 'solid progress' despite his candid reaction to driving the 'scary' MP4-30 in the Spanish Grand Prix.

The Briton, who stayed back at the Circuit de Catalunya for a tests that he said was a step forward, courted headlines when he described the MP4-30 as difficult to drive in Spain, saying he lacked traction at low and high-speed.

Reflecting on those comments, Button admits it is natural to feel frustrated in the immediate aftermath of a race, but maintains the team is making progress with the car heading into the Monaco Grand Prix.

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"Monaco is a low-speed circuit that doesn't rely that much on aerodynamic performance, but you do need good balance and driveability. I'm hopeful we can sort out the balance issues we had on my car in the last race, so Monaco should see an improvement.

"After a disappointing race in Barcelona, naturally it's easy to be frustrated when you step out of the car, especially when you feel you deserved more. I firmly believe that we're making solid progress, which is why having a difficult race is hard to take. However, we've put that race behind us and I think we've a decent chance of continuing our upward trend in Monaco."

A winner of the event in 2009 en route to his world title, Button is excited by the chance to compete at the iconic principality once again.

"It's true what they say - Monaco is the jewel in the crown of the Formula 1 calendar in every sense. It's a real test of man and machine working in harmony to hook up the best lap, and maintain that consistency lap after lap. It's very easy to make mistakes there, and you need complete confidence in the car and incredible control and accuracy to get the most out of a lap.

"Qualifying is so important because overtaking is famously tricky; we've been steadily improving our starting positions since the beginning of the season, so I'm hopeful we'll see further progress on Saturday."