Data for the vehicle-reservation assignment problem in a car rental company, including vehicle and reservation information, car transfers time and cost (collected for Portugal), and upgrading and downgrading policies. Data used in Oliveira, B.B., Carravilla, M.A., Oliveira, J.F. and Toledo, F. M.B., 'A relax-and-fix-based algorithm for the vehicle-reservation assignment problem in a car rental company', European Journal of Operational Research, Volume 237, Issue 2, 1 September 2014, Pages 729-737, ISSN 0377-2217, http://dx.doi.org/10.1016/j.ejor.2014.02.018.