Is the Mercedes-Benz C260 China 5 or China 6?

[MasonLee]

Currently, the Mercedes-Benz C260 on sale includes both China 5 and China 6 models. Below are the relevant introductions about China 5 and China 6 models: China 5 Emission Standard: The carbon monoxide emissions per kilometer driven by the car must not exceed 1000 milligrams; the non-methane hydrocarbon emissions per kilometer driven must not exceed 68 milligrams; the nitrogen oxide emissions per kilometer driven must not exceed 60 milligrams; the PM fine particulate matter emissions per kilometer driven must not exceed 4.5 milligrams. China 6 Emission Standard: The carbon monoxide emissions per kilometer driven by the car are 500 milligrams; the nitrogen oxide emissions per kilometer driven are 35 milligrams; the fine particulate matter emissions per kilometer driven are 3 milligrams; the non-methane hydrocarbon emissions per kilometer driven are 35 milligrams.