 McLaren deliberately introduced two brand @-@ new engines for both Alonso and Button at the Belgian Grand Prix , effectively moving them to the back of the grid , but allowing them to contest the Italian and Singapore Grands Prix — deemed to be crucial races in assessing the engine 's development — without the risk of a penalty . Despite this plan , the team were forced to take another penalty in Italy when further engine changes were needed , bringing their total use up to nine engines from the original allocation of four . Belgium also saw the team 's second major aerodynamic update : the team added extra fins to the front of the floor to improve air flow under the car , lowered the height of the sidepods and revised the engine cover . The position of the radiator used to cool the energy recovery system was also changed . Both cars completed the Belgian Grand Prix , but once again finished outside the points , one lap down in thirteenth and fourteenth place . Button described the result as " embarrassing " after both cars were classified as finishing behind Sebastian Vettel despite Vettel retiring from the race on the final lap . The team reverted to the longer @-@ specification snub nose for the Italian Grand Prix in order to provide better aerodynamic balance and lower drag on the high @-@ speed Autodromo Nazionale Monza circuit . The change proved to be of little benefit , as both drivers were eliminated in the first qualifying period and struggled throughout the race . Button finished in fourteenth , while Alonso retired with an electrical problem but was classified in eighteenth position as he had completed 90 % of race winner Lewis Hamilton 's race distance . The race marked a milestone of fifty races since McLaren 's last Grand Prix win at the 2012 Brazilian Grand Prix . 
