And here's my current garage. Bare in mind that most cars were brought in from Single-Player mainly for NOS. I don't abuse NOS; I only use it for missions such as Rooftop Rumble, and for free mode.
Invetero Coquette: Fully tuned, bought in MP, Dark Blue with Saxon Blue Pearl, no NOS, no turbo
Vapid Dominator: Fully tuned, brought into MP, Stone Silver with Ice White Pearl, NOS, no turbo
Karin Sultan: Fully tuned, brought into MP, Wine Red with Hot Pink Pearl, Ice White Secondary NOS, turbo
Albany Roosevelt: Fully tuned, bought in MP, Cabernet Red with no Pearl, Matte Grey Secondary, no NOS, no turbo
Canis Merryweather Mesa: Fully tuned, brought into MP, Ice White with no Pearl, NOS, Turbo
Bravado Youga: Fully tuned, brought into MP, Matte Foliage Green with no Pearl, NOS, turbo
Bravado Rat-Loader: Fully tuned, brought into MP, Worn Light Orange with no Pearl, NOS, turbo
Obey Tailgater: Fully tuned, brought into MP, Midnight Purple with Bright Purple Pearl, NOS, turbo
Canis Seminole: Fully tuned, brought into MP, Garnet Red with Anthracite Black Pearl, Matte Grey underside, NOS, turbo
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Benefactor Serrano: Fully tuned, brought into MP, Black with Lime Green Pearl, NOS, turbo