The LEGO Technic Mercedes-AMG F1 W14 E Performance Pull-Back (42165) offers an exciting building project for children aged 7 and up. The toy racing car from this building set is faithfully modelled on the real speedster. And the intriguing pull-back function lets the model whizz off so boys and girls can pretend to be real motorsport champions. Are you in the mood for a great community experience with your young motorsport fan? The LEGO Technic Mercedes-AMGF1 W14 E Performance (42171) for adults, sold separately, is the perfect addition to this set and lets you enjoy a great building experience together. LEGO Technic building sets feature realistic details that help young LEGO builders understand technical concepts in a way that is easy to understand. And the LEGO Builder app takes your child on an intuitive building adventure. The app lets your child zoom in and rotate digital 3D model views, save their sets, and track their build progress.