“There’s three sets of regulations now. But last year, Max damaged one front wing, and Checo had a crash at Monaco and we had again very limited amount of development on the car," Horner explained to Sky Sports.
"So, we were several million below the cap last year. Because accident damage and development – they're huge costs.
"This year, the biggest handicap we have is that lack of wind tunnel time, it’s significantly less runs in a week than any of our competitors, so we have to be very very disciplined on where we focus our development.
"It’s a company thing. Everybody, every day, every week, is talking about cost cap or budget cap or technical and sporting regulations. It’s part of the challenge of what is now Formula 1."