1966 Monaco Grand Prix

The 1966 Monaco Grand Prix was a Formula One motor race held at the Circuit de Monaco on May 22, 1966. It was the opening round of the 1966 Formula One season, the first of a new era for Formula One, the 'return to power' as engine regulations were altered from 1.5 litres of maximum engine displacement to 3.0 litres. It was the 24th Monaco Grand Prix.

The race was won by British driver Jackie Stewart driving a BRM P261. He took a forty second victory over the Ferrari 246 of Italian driver Lorenzo Bandini. It was Stewart's second Grand Prix victory after winning the Italian Grand Prix the previous year. Stewart's team mate, fellow Briton Graham Hill finished a lap down in third position in his BRM P261. The only other driver to be classified as a finisher was American driver Bob Bondurant driving a BRM P261 entered privately by Team Chamaco Collect.

Race report
The first race of the new 3-litre engine series began at Monaco. Few teams were ready for the new regulations with several teams starting the race with 1965 engines still in place, or had adapted heavier sports car racing engines to suit.

Some sessions were filmed for the movie Grand Prix. It was the debut race of the McLaren racing team, and the Repco V8 in the back of Brabhams new 1966 BT19 chassis. John Surtees, still recovering from a crash at Mosport Park led for 14 laps from Jackie Stewart, Jochen Rindt and Denny Hulme until his differential broke, handing the lead to Stewart. Hulme retired whilst Graham Hill and Jim Clark disputed third place before Clark's suspension gave out. Meanwhile Lorenzo Bandini was smashing the lap record before having to ease off to prevent the front brakes wearing out. Stewart won from Bandini with Graham Hill third and Bob Bondurant fourth the only other car past the line in a race of extreme attrition. New rules meant that cars had to complete 90% of the race distance to be classified and eligible for points, meaning that whilst Guy Ligier and Jo Bonnier were still racing, they were considered far enough behind to have actually retired.

Lap leaders
John Surtees (laps 1–14), Jackie Stewart (15–100)

Standings after the race

 * Drivers' Championship standings


 * Constructors' Championship standings


 * Notes: Only the top five positions are included for both sets of standings.