Has anyone else experienced loss of power when driving the vehicle on a hot day after it has been parked in the sun, and have you found the solution to the problem?

 

No power in HOT weather - RX8Club.com

 

Give us more info about your car...year, mileage, any mods (if any)... and when is the last time you did a tune-up (replacing the coils, plugs, and wires)? Check the compression numbers on the engine (compression test)