DTM
Marco Wittmann's chances of repeating his 2014 championship success took a sour turn after he was excluded from Race 2 at the Hungaroring.
Wittmann crossed the line in fourth after an early altercation with chief title rival Edoardo Mortara.
However the BMW Team RMG star was disqualified from the results with his M4's skid pads allegedly not meeting the required thickness.
The ramifications saw what would have been a 26 point lead for Wittmann going into the final round, reduced to 14 over Mortara (Abt Audi) who was classified in 19th.
The race was won by Mattias Ekstrom (Abt Audi) from Adrien Tambay (Rosberg Audi) with Antonio Felix da Costa (Schnitzer BMW) third.
In the opening race contested over 26 laps, Mortara beat Jamie Green (Rosberg Audi) and Miguel Molina (Abt Audi) while Wittmann was seventh.
The final round is scheduled for Hockenheim from October 14-16.
World Touring Car Championship
Volvo's Thed Bjork and Citroen gun Jose Maria Lopez shared wins at the Shanghai International Circuit.
Bjork took a maiden WTCC win for Volvo Polestar Cyan Racing in the opening encounter by beating Honda JAS driver Norbert Michelisz.
Yvan Muller, who announced his retirement from the WTCC at the end of the season, was third ahead of Lopez.
After securing a third consecutive WTCC title, Citroen then provided a clean sweep in the main race with Argentinian Lopez leading home Muller while Loeb Citroen driver Mehdi Bennani was third.
“It has been a fantastic weekend for all of us. We were the fastest out there,” Lopez said.
“We are all incredibly lucky to be part of this amazing adventure and we will be looking to finish in style in Doha.”
The final round of the WTCC is schedule for the Losail International Circuit at Qatar from November 24-25.