There are no bad batches of fuel, it all comes from the same place. If there is an issue then it would most likely reside at site level. I would suggest that you contact bp if you believe there is a problem with the fuel that you purchased. See the link below for bp's Fuel Guarantee, and some other info that might be of use.
Dirk Diggler, I would thought working for bp you would raise this as an issue with one of the business managers. From your post, you put Vortex in first, and all others after ran crap, so maybe that was the issue if your particular problem is related to fuel quality. Or it might be your car? And Toluene will end up giving you sooty spark plugs due to the high carbon content.
bp Fuel Guarantee
Fuel News