F1: Top 10 disappointments of 2013

An Infiniti Red Bull Racing mechanic works on wheels and Pirelli tyres in the paddock during practice for the Bahrain Formula One Grand Prix at the Bahrain International Circuit on April 19, 2013 in Sakhir, Bahrain. (Getty Images)

4: Pirelli

The tyre controversy came into light during the 2013 British Grand Prix, where not one, but three cars faced tyre failures. Similar incidents occurred when Vettel and Alonso faced tyre failure during the practice of 2013 Belgian Grand Prix. This led to various talks regarding the tyre quality provided by Pirelli and whether or not they should be continued as the tyre manufacturer from 2014 onwards.

3: Force-India Mercedes

Force-India Mercedes did not have a great start to season as their drivers, Adrian Sutil and Paul Di Resta finished 7th and 8th, respectively in the 2013 Australian Grand Prix and both retired in the 2013 Malaysian Grand Prix.

Later in the season, Adrian Sutil gave an amazing performance in a number of races but lost out on a podium finish due to the team strategy. Force-India Mercedes, who currently stand 6th in the Constructors Championship table, need to work on their team strategy if they want to move up the table.