At the 2015 Monaco Grand Prix, Verstappen was involved in a high-speed collision with Romain Grosjean, after clipping the back of the Lotus on the approach to Sainte Devote and flew nose-first into the barriers at high speed. Verstappen was given a five-place grid penalty for causing the accident, and was branded "dangerous" by Williams driver Felipe Massa – although Verstappen hit back at Massa by pointing out he had himself been involved in a similar incident with Sergio Pérez at the 2014 Canadian Grand Prix.