Dealerships visited included Proton, Chevrolet, Honda, Mazda, Toyota and Nissan.
The first thing that struck me after my debarcle in buying a new truck 12 months ago was that all but one dealership offered to discount the vehicle i.e. sell it for considerably less than the listed price. When asked, 'most' dealers were also prepared to throw in extras to secure a sale.
However, like me 12 months ago, my friends were expecting to purchase one of Thailand's top brands - unfortunately, there were no suitable cars in the showroom, and there wouldn't be for at least 2 months. They did show my friends a photo of a car on their phone, and if a deposit was put down today, they could deliver by end October

One 'reputedly top class' dealer would not throw in any extras, and insisted basics such as a rear windscreen wiper and a rear parcel shelf would cost extra.
The other 4 dealers were first class in their efforts.
3 of the dealers could deliver next week however, only 2 of the vehicles had passenger air bags, so this helped my friends narrow down the search.
My friend's car will be delivered to their condo on Monday - an enjoyable, eye opening experience.
[Edit] Omitted word inserted (in red)