I checked the owners manual, and sure enough you are correct, 21.1 gal (80 liters) for the sedan. It also states the wagon is 15.8 gal. (60 liter) so perhaps that would explain the two part numbers. This makes for a remarkable range on this car. I have gone 350 miles (about 560 km.) on a tank.
I keep forgetting what wonderful wealth of information is in the Owners Manual. Good thing to keep in the glovebox. Once when there was a question about a dash light when smogging the car I had to go to a referee and he said what ever was in the Owners Manual was what they had to accept. Saved me a bunch of trouble.






