1947 French Grand Prix

As the first French Grand Prix held after World War 2 the entry was quite mixed. Pre-race favourites, the two Alfa Romeo 158s entered by Jean-Pierre Wimille, did not arrive. The entrants which did arrive were two two-seater Delahayes, four sports car Talbot-Lagos with two single seaters for Louis Chiron and Luigi Chinetti, six Maseratis, two of which were the latest 4CLTs for Alberto Ascari and Luigi Villoresi, three ERAs, one of which was Peter Whitehead's aging B-Type, and finally the experimental French CTA-Arsenal.[1]

The start of the race was quite eventful. Henri Louveau (in a Maserati 4CL) lead at first from the front row, but was overtaken by fellow Maserati driver Pierre Levegh. Both were overtaken by another Maserati driven by Raph who lead the first lap. Meanwhile, from the back of the grid Villoresi in the newer Maserati had moved up to third place, while Raymond Sommer retired the CTA-Arsenal in its only ever race appearance without completing a lap.[1]

On the second lap Villoresi moved into second place and by the end of the third lap had taken the lead. On the fourth lap he was forced to retire with smoke pouring out of his engine, handing the lead to Raph followed closely by Emmanuel de Graffenried, in another Maserati, who took the lead on the following lap.[1]

Chiron made a slow start but quickly moved up through the field, taking the lead from de Graffenried on the eighth lap. de Graffenried stayed with Chiron until engine overheating forced him to retire after 20 laps, handing second place to Henri Louveau. Thanks in part to just about every competitor suffering from various mechanical issues, the lead two would hold their positions until the end of the race.[1]

After making a fuel stop, on his 24th lap Pierre Levegh crashed his Maserati through a barrier, killing two spectators, after his engine seized.[1]

Not long after half distance, Chiron looked to be experiencing engine problems as an oiled plug caused stuttering. Although this quickly cleared, it was clear that Chiron's car was not running well, and if not for his fellow competitors experiencing trouble themselves he would not have been competitive. Chiron's fuel stop on lap 44 left him with a lead of 48 seconds over Louveau who would himself stop on the next lap, increasing the gap to 1 minute and 35 seconds. Louveau would reduce this lead by over a minute, if not for making a late-race stop, allowing Chiron to continue running at a low enough pace to preserve the car. It was a popular victory, with the slower French cars demonstrating their much stronger reliability over the faster Maseratis, of which just one of six finished.[1]

• XXXIV Grand Prix de l'Automobile Club de France