Ahluwalia, in his Maruti Gypsy, clocked the combined fastest time of 30 minutes and 35 seconds to be ahead of Sandeep Sharma (Varun Davessar) and C Druva (B C Roopesh), who managed 30:42 and 31:03, respectively.
Twice runner-up Suresh Rana (Parminder Thakur) was running sixth on 31:42.
The drivers covered a liasioning distance of around 200km from Bangalore for the two special stages in the Chitradurga town near here.
Delhi-based Ahluwalia was confident of maintaining his lead going into day two of the five-day rally, traversing through parts of North Karnataka before culminating in Goa on August 9.
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"The start has been good. We did the same stage twice today and it was challenging. The route was tricky with fast flowing corners, dips and hairpin bends. I think the organisers took the right call in cancelling the other stage, which I am told was all tarmac. They thought it could be unsafe for the general public," Ahluwalia told PTI.
In the extreme bike category, Nataraj set the leading time of 30:56 ahead of Mohit Verma (32:18) and Promod Joshua (32:22).
The rally moves to Hospet tomorrow for a double run on the 26km special stage.