Keep my honda civic si or go with a 2005 rx8?

Got a guy wanting better gas mileage and wants to trade my 97 civic si hatchback his 05 rx8 6 speed manual. I'm aware of all the maintenance needed for the rx8. Oil consumption and warming and cooling down the engine. But realistically are these motors made to last 200k like a civic or am I going to be looking forward to replacing the motor? I love the look af the rx8. And I'm willing to take care of it.

Keep the Civic. Unfortunately, the RX8 is the only un-reliable car Mazda has ever made.

Mazda Salesperson

Keep the Honda, it's much more reliable.