Is a Mazda RX-8 expensive to run?

My son needs a car and is looking at a Mazda RX-8. He drives for fun rather than efficiency. Would this car be expensive to run?

Mazda RX-8 poor compression

I have a 2004 Mazda RX8 192 that I bought in April 2005 with 5,000mls on the clock. I bought it from a Mazda Dealer with a full service history and I have kept it fully serviced and maintained as per the...