The Black Dagger Brotherhood collectively own many cars, including but not limited to, Butch and Vishous' Escalade, Rhage's (purple?) GTO, Fritz's Mercedes. Zsadist also has an iron-grey Porsche Carrera 4S.
Prior to Darius' death, he had a BMW- it was blown up along with him.
At a point between books, the Brotherhood acquire two minibuses which are used to shuttle the pre-trans near-warrior-class to and from the training facility. They have screens in them that, while not specifically mentioned in the series, are likely to block out sunlight.
While not a car, Payne has a horse named Glory that was given to her by Dr. Manello (Manny).
For the most part, all the Lessers drive crappy, POS cars that don't draw attention. There were a number of more functional Lesser cars, such as a van, a 4x4, etc.
One Forelesser however, took it as his privilege as Forelesser to buy himself (with Lessening Society money) a Hummer. Color is not specified.
Other Character's Vehicles
Rehvenge drives a Bentley.
Xhex drives a motorcycle.
Dr. Jane Whitcomb had an Audi, but Vishous crashed it to cover up her death.
Dr. Manello drives a silver Porsche Carrera 4S. When he moves in with the Brotherhood, he brings it with him.