I don’t think the new quarter prices are such a big thing as they used to be as often car’s change prices during the quarters now or are removed and then re-appear at usually a higher price.
I used to be able to order my car in Q1 and pretty much always the cars I was looking at went up in price from Q4.
My last car was a civic and that went up £600 in the two quarter’s before i could order it in jan and before it left the scheme, it had risen and risen and it would of been to high for me to afford one at those ap’s.
Sometimes though when a new model of car comes on the scheme it’s often then rises, which i noticed with the 2.0l corolla and was way to much in ap, by the time i could order a car.