My quick research shows two current production models: Huracan and Aventador. The others are all older (and thus, no longer brand new.) *edit* seems there's a third one called Centenario, but they only made 20 coupes and 20 roadsters or 40 cars total, all of which have been sold.

Lockdown in Transformers: Age of Extinction is a Black or Dark Grey 2013 Aventador.

I'm thinking the Huracan, even the base model (as that's the lowest priced) is a good place to start. It's still at least 250k USD.