Hahne's first start in the Australian classic was in 1984 when he partnered Englishman Jeff Allam in a Mobil Rover Racing Rover Vitesse to an easy Group A class win and an excellent 12th outright after starting 36th against much more powerful opposition (the Rover qualified 10 seconds slower than the pole winning Nissan Bluebird Turbo of George Fury and finished just 11 laps down on the winning V8 powered Holden VK Commodore of Peter Brock and Larry Perkins).

A brief return to Jaguar in 1985 saw Hahne team with Australian racer John Goss to win the 1985 James Hardie 1000[2] after starting sixth.

[citation needed] His next time at Bathurst was in 1987 for the World Touring Car Championship round in an ill-fated Maserati Biturbo with Australian Kevin Bartlett.

A troubled race week saw them start 34th and retire after only 29 laps with a broken differential.

1988 saw him in a Mark Petch Motorsport Ford Sierra RS500 with New Zealand racer Robbie Francevic, the car engineered by its previous owner and Hahne's team boss in the 1988 ETCC, former Wolf Racing Formula One team owner Walter Wolf.