Hyundai's Thierry Neuville leads Rally Argentina overnight following Thursday evening's Villa Carlos Paz super special stage.
Neuville's time of 1m54.4s around the 1.1-mile mostly asphalt stage put him three-tenths of a second clear of Ott Tanak's Toyota in second place.
For much of the evening, the lead changed hands with every new car through the flying finish, but World Rally Championship leader - and last frontrunner on the road - Sebastien Ogier could not depose Neuville and had to settle for third.
Neuville's teammate Andreas Mikkelsen completed the top four, ahead of Kris Meeke in the best of the Citroens.
Craig Breen is back as Meeke's teammate this weekend after Sebastien Loeb's two-round cameo, but his return got off to a frustrating start with a 10s penalty for being late out of service.
Even before that was applied, Breen had only been 10th fastest on the stage, behind Esapekka Lappi, Teemu Suninen, Dani Sordo and Jari-Matti Latvala.
With the Thursday programme consisting of a sole super special, the rally will properly kick off with seven stages on Friday.