Ogier, who made his first start since returning to Citroen for 2019, took the lead of the second of three afternoons on Friday afternoon and did not relinquish it afterwards.
However, this was not proof of how close the sixfold champion was and main rival Neuville was no more than 5.8 seconds behind on Saturday or Sunday with the Hyundai rider.
Ogier consolidated his lead on Saturday, but Neuville made a strong start to the last day of action by breaking the 1-1 deficit of 4.3 seconds in the morning round.
A 2.8-second win after the penultimate test gave Neuville an attack on Ogier, who came across a throttling problem on SS14 and SS15, which was reported to have been fixed before. The final leg of La Cabanette's Col de Braus.
Neuville started the stage just 0.4 seconds behind the rally leader and was 1
The victory is Ogier's seventh place in the Monte Carlo Rally and the sixth consecutive place.
Former rally boss Ott Tanak took third place on Saturday and Sunday with an assault on Saturday When he was forced to change a puncture on SS7 on Friday afternoon, he dropped to seventh.
At the end of the first day of the rally, Tanak was more than two and a half minutes behind Ogier, but won all four stages on Saturday and finished the day in fifth place – after Andreas Mikkelsen and Elfyn Evans retired – and only 20 from a podium finish.
Another stage win on Sunday left Tanak just under 5.7 seconds ahead of Sebastien Loeb, with a sixth consecutive stage. The SS14 put him in third place ahead of Loeb and Jari-Matti Latvala.
Neuville's best time in the penultimate test ended with Tanak's stage wins, but he still made it out of the pursuing pair and finished third.
Loeb stormed to two stage wins riday – both on the 14.94 mile test of Roussieux-Laborel – thanks to an inspired tire choice and a consistent run on Saturday, he finished the day in the top three.
However, when he first launched the WRC, there was no milestone for Hyundai as he turned away from Tanak in the final three stages and instead extended his lead over Latvala.
Kris Meeke finished sixth in his Yaris, but his last deficit of 5m36.2s against Ogier was not an accurate reflection of His pace.
On his debut for Toyota, Meeke finished second after Thursday's first leg before a puncture lowered him to fourth.
Meeke's mid-pack position fluctuated on Friday afternoon, but he had just climbed to sixth when a rim problem occurred, costing him more than three minutes in one go.
This ended his realistic hopes for a significant boost in points, but Meeke kept his Yaris in sixth for the remainder of the event – an additional fi pick five points for victory on Powerstage.
The rally was extremely disappointing for the M-Sport Ford squad, with all three drivers having problems.
Evans had settled in the points but dropped his Ford Fiesta WRC in front of a steep bench and into a tree on the SS10 after being driven by a fast left-hander.
Teemu Suninen crashed on the first leg, but recovered to eleventh place, while Pontus Tidemand on his return to the WRC class was cautious on both sides after a failure of the control arm on Friday.
Hyundai driver Mikkelsen also retired On Saturday, after climbing a wall as he conquered the final turn of the SS9, which had torn away his left rear wheel, WRC2 pro runner Gus Greensmith drove his R5 M-Sport Ford Fiesta in seventh place.
Greensmith's had a clear run in the WRC2 Pro category for the majority of the rally after Skoda rider Kalle Rovanpera started on Thursday in the opening stages, but still a convincing 51.9s lead over the next runner the class finished.