Poor is a good estimate. They have 2.6 displacement, and are taxed accordingly. If you do have a look on rx8 OC, they will swear blind that it's all a myth and that they are the best cars since sliced bread, defend them to the death.
They are flawed, but are one of the few cars that can be driven, to the limit, on our roads and handle sublimely.
I had one for 4 years, loved it, but it was mine from new, I would NOT buy second hand, never mind a non runner.