Ott Tanak, M-Sport Ford's overnight leader, has taken retirement from Rally Finland after his car was damaged on the first full day of action.
Estonia-born former world champion was fourth in the driver standings going into the ninth of 13 rounds this season.
"Due to impact damage on SS3 (stage three), sadly we have been left with no choice but to retire Ott's car from Rally Finland," M-Sport said.
Tanak won Thursday's opening stage in Jyvaskyla but had dropped to third before he damaged the car's engine on the third Lankamaa stage and switched to electric mode before stopping.
"It’s a shame we can’t continue but the car is too damaged for us to carry on," said Tanak, who suffered a five minute penalty for a change of engine in his home Estonia round last month.
Finland's world champion and overall series leader Kalle Rovanpera was leading Toyota team mate Elfyn Evans after the morning round of stages.