%X This paper addresses the real-time control of autonomous vehicles under a minimum traveling time objective. Control inputs for the vehicle are computed from a nonlinear model predictive control (MPC) scheme. The time-optimal objective is reformulated such that it can be tackled by existing efficient algorithms for real-time nonlinear MPC that build on the generalized Gauss-Newton method. We numerically validate our approach in simulations and present a real-world hardware setup of miniature race cars that is used for an experimental comparison of different approaches. %L eprints4022 %D 2014 %A Robin Verschueren %A Stijn De Bruyne %A Mario Zanon %A Janick V. Frasch %A Moritz Diehl %R doi:10.1109/CDC.2014.7039771 %C Los Angeles, CA, USA %B 53rd IEEE Conference on Decision and Control %T Towards time-optimal race car driving using nonlinear MPC in real-time %P 2505-2510 %I IEEE