If you have a autonomous car, the most important change will be that
a) The inconvenience of driving to maintenance is a non-issue (imagine your car going to the workshop without you) - and thus the central issue about the scandal (that adblue would need to be refilled more often than acceptable for the convenience of the customers) is a non-issue.
b) For most of the driving the car can go fuel/emission optimized (i.e. it may go as slow as its reasonable) , since it's very likely that there will be non one onboard (i.e. picking up the kids school). I would imagine that if could even go directly by solar cells in the car without much battery.
c) as every scandal, the rules for SW development in cars will be tightened, and the suppliers may put more attention on not delivering SW which "accidentally" could be abused.