You can usually get more than 267 liters by putting down back seat in CX-9. In 2009 it was decided by the Mazda to provide these figures. It’s not a problem to put in CX-9 quite a big amount of luggage. Effective space design in Mazda gives more opportunities. Cargo space in Mazda CX-9 is known to be 267 liters.
You should also look at 2009 Mazda cargo weight restrictions. Overloading Mazda CX-9 might be a great problem in future. The number of 267 liters cargo space is provided by Mazda and is appropriate for vehicle.