"We hit a massive rock in SS2 that pitched us in the air and again in this one, so we were a bit lucky," he said.
Overnight rain left the gravel roads damper and cooler than expected and those who used soft tyres in their selection yesterday morning benefited. One of those was Paddon, who had two softs on the rear of his car.
"It will be a hard day [today] because my rivals know the course better than I do but I will count on my fighting spirit to help keep my lead," he said.
Ogier has won the past two races in Sardinia but admitted he would have his work cut out for him overnight (NZT).
"It will be a long day and won't be easy up against Hayden," said VW driver Ogier.
The championship leader was second in SS2 but eighth in the SS3, and held fourth, 22.3s off the lead.
"It was terrible, a lot of gravel and it was like driving on ice. But I'm happy, I couldn't have driven better," said the Frenchman, who is 0.8s behind team-mate Andreas Mikkelsen.
VW's Jari-Matti Latvala is third, almost 26s behind Paddon, after winning three stages in the afternoon. The Finn admitted he also benefited from the early starters sweeping the roads.