The 1955 World Sportscar Championship season was the third season of FIA World Sportscar Championship motor racing. It featured a series of six endurance races for sportscars, contested from 23 January to 16 October 1954.
The championship was won by Mercedes-Benz, the German manufacturer ending the dominance of Ferrari which had won both of the previous World Sportscar Championship titles.
The 1955 World Sports Car Championship was contested over a six race series. With legendary races such as the Mille Miglia and the RAC Tourist Trophy now part of an international race calendar, they were accompanied by the 24 Hours of Le Mans and 12 Hours of Sebring. The championship started in January, with a trip to Argentina for the 1000 km Buenos Aires. The Carrera Panamericana was no longer run after 1954, and while the 1000 km Nürburgring was due to run, this was later cancelled following the events at Le Mans. They were replaced with another legendary road race, the Targa Florio.
The Championship was open for manufacturers, with works teams such as Scuderia Ferrari, Officine Alfieri Maserati, Daimler-Benz and Jaguar Cars leading the way, but the majority of the fields were made up of amateur or gentlemen drivers, often up against professional racing drivers with experience in Formula One.
Classes were split between closed cars (GT) and open cars (Sports), with further divisions due to engine displacement. The 1955 season was a very bittersweet one for Daimler-Benz, with their Mercedes-Benz 300 SLRs. After missing the opening two, non-European rounds, which allowed Ferrari to gain a 14-point head start on Mercedes, the German team joined the championship. Aided by an English journalist, Denis Jenkinson, Stirling Moss would romp to victory in the Mille Miglia. However the elation achieved by this English pairing, would be quickly subdued at Le Mans a month later, when Pierre Levegh’s 300 SLR would be launched into the air and into the crowd, killing more than 80 spectators. Daimler-Benz would withdraw from the race, and motor sport altogether at the end of the season.