The 25-year-old Italian began the leg in fourth place, however listed a series of top-four occasions and also a point win in his own Škoda Fabia to develop an outcome of 21.6sec over Nikolay Gryazin’s corresponding car. VW Polo driver Ole Christian Veiby will be 12.5sec further back in third.
Yoann Bonato, who had been next in WRC 2, was to go. He stopped in SS-8 and retired when his Citroën wouldn’t restart.
SS9 turned out to become a giant killer. Whoever leader Éric Camilli dropped into 2nd later he stopped to change a puncture, while the man who had previously been next, Nicolas Ciamin, retired with steering.
Andolfi inherited a 31.7sec lead, however by SS11 he was under great pressure from a recovering Camilli, who hoped to regain top area by the close of the leg.
However Camilli’s rally came to a shocking ending in SS12 after his Polo caught fire mid-stage and was completely destroyed. Camilli and co-driver Francois Xavier Buresi were unharmed.
VW Polo motorist Kajetan Kajetanowicz was more than two minutes behind the lead trio following a purification in ss-10 and busted power-steering SS11.
Takamoto Katsuta (Ford Fiesta) maintained fifth, 34sec further back, together with Rhys Yates (Škoda) rounding out the top .
The WRC2 Pro category was rocked by a double retirement that required both entries out of the contest.
Overnight leader Kale Rovanperä dropped his Škoda near the start of SS9. Roll-cage damage means he will not restart on Sunday.
That left Fiesta motorist Lukasz Pieniazek since the only runner. The Pole had a narrow escape SS11, which he completed with an entirely destroyed front tyre. But his luck ran out in SS12 when he slid wide on a right-hand corner and then collided with a wall.
Pieniazek hopes to restart on Sunday.