I had a colleague who had one as a company car, he took it back to the garage saying "There's something wrong with the fuel consumption!".
<Garage man> Sorry, pal, that's how it is... https://www.honestjohn.co.uk/realmpg/mazda/rx8-2003
LOL! When I first got mine, people were like, wow you must get great mileage in that little car! Uh...no.