Augusto Farfus stormed away from pole position after dropping back in the first race to claim the top spot, leading a queue of Dirk Muller, Antonio Garcia, Gabriele Tarquini and a fast starting Jorg Muller.
Dirk Muller was running all over Farfus but couldn't find a way through, while behind the pair BMW's Jorg Muller and Andy Priaulx, along with Alfa Romeo's James Thompson, ran like a train past Tarquini.
Farfus was desperate to hold onto the lead, but the Mullers clearly had something to say about that, pushing immediately behind him for two laps before finally running inside the Alfa driver at the Adelaide hairpin - the trio were side by side into the corner, but Farfus ran too deep and fell back to fifth.
The battle of the Mullers was resolved at the same spot a lap later, with Jorg 45 kilos lighter and easily able to dispose of his teammate, while behind them Farfus was fighting back and got inside and through Tarquini.
Further back in the field Alessandro Zanardi and Valle Makela came together, with the SEAT driver sliding luridly across the track with a broken left front wheel coming out of the hairpin; their pursuers doing a good job just to avoid him.
Priaulx continued his good form for the day by disposing of Tarquini and Farfus in successive laps, looking very fast as he went; Thompson was unable to run at the pace of his countryman and fell backwards through the pack.
With two laps to go Priaulx had caught up to Dirk Muller, tried a move on the outside at hairpin which clearly wasn't going to work; the pair ran together but, without a way past and with one eye on the championship table, Priaulx decided discretion was in order and settled for third.
Gene had dropped back from second on the grid to sixth; on the last lap his car was smoking heavily from the front left tyre, but this was forgotten when Dirk Muller crossed the finish line sideways before luridly sliding backwards into an innocent Farfus.
But the race, like the weekend, belonged to his namesake Jorg: "It was just a perfect race - I was lucky with overtaking, so I'm very happy. The only bad thing is I now get extra weight, but I don't mind if I have to carry sixty kilos all season!"
If Jorg wants to know about running with success ballast he could do worse than to ask Dirk Muller, who noted: "I had a tough weekend with 45 kilos [ballast], and I had to change completely my driving style and the set up.
"I had problems on the last couple of the laps and had a big vibration, but on the last corner I went over to wave to my team and I think something broke in the back of the car, so I'm really scared actually."
Andy Priaulx, who managed to avoid all of the drama to finish on the podium in both races, was sanguine about his weekend: "It was pretty tough because you don't want to take another BMW off, and his [Dirk Muller's] lines were so good that the only way that could have happened was to go off, which I'm not prepared to do!
"But I'm fighting for the world championship, and we're not far away, so we've just got to keep pushing."
WTCC Race Two at Magny Cours (12 Laps):
Pos Driver Make Time Gap
1. Jorg Muller BMW 320i 22:23.707
2. Dirk Muller BMW 320i 22:28.710 + 5.003
3. Andy Priaulx BMW 320i 22:28.878 + 5.171
4. Antonio Garcia BMW 320i 22:29.187 + 5.480
5. Augusto Farfus Jr Alfa Romeo 156 22:29.741 + 6.034
6. Jordi Gene SEAT Toledo Cupra 22:32.586 + 8.879
7. Fabrizio Giovanardi Alfa Romeo 156 22:34.245 +10.538
8. Gabriele Tarquini Alfa Romeo 156 22:34.535 +10.828
9. James Thompson Alfa Romeo 156 22:40.842 +17.135
10. Peter Terting SEAT Toledo Cupra 22:42.764 +19.057
11. Rickard Rydell SEAT Toledo Cupra 22:44.963 +21.256
12. Roberto Colciago Honda Accord Euro 22:46.234 +22.527
13. Nicola Larini Chevrolet Lacetti 22:47.501 +23.794
14. Tom Coronel Seat Toledo Cupra 22:48.834 +25.127
15. Carl Rosenblad BMW 320i 22:50.559 +26.852
16. Robert Huff Chevrolet Lacetti 22:51.099 +27.392
17. Marc Hennerici BMW 320i 22:52.550 +28.843
18. Giuseppe Ciro BMW 320i 22:52.869 +29.162
19. Salvatore Tavano Alfa Romeo 156 22:55.425 +31.718
20. Gianluca De Lorenzi BMW 320i 22:56.021 +32.314
21. Adriano De Micheli Honda Accord Euro 22:56.609 +32.902
22. Thomas Jager Ford Focus 23:02.088 +38.381
23. Thomas Klenke Ford Focus 23:02.934 +39.227
24. Stefano Valli BMW 320i 23:15.966 +52.259
25. Alessandro Zanardi BMW 320i 23:17.569 +53.862
26. Sascha Ploderl Ford Focus ST170 20:40.628 +2 Laps
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