Just finished a book featuring a older Porsche convertible. It's obvious from the description it's a 911. I started getting a bad feeling when the author described the MC retrieving items from the trunk and opening the hood to work on the engine. Sure enough, when the MC is chasing the bad guys and pushing the car hard, the engine fails and sprays oil all over the windshield (!). The engine in a Porsche 911 is in the back.
That reminds me of an old anime, Weiss Kruez. There was clearly at least one car fan amongst the animators, because most of the cars were rare models and easily identifiable. Apart from one character's porsche, which would change model mid car chase.