What are the CO2 emissions of a Mercedes-benz S 400 D 4matic?

Official EU monitoring data for 2025 registrations shows fleet-average CO2 from 185 g/km (WLTP) for the Mercedes-benz S 400 D 4matic, varying by fuel type and configuration; the table on this page lists every year and fuel type.

How many Mercedes-benz S 400 D 4matic are registered in the EU?

The EEA monitoring database records 13,486 new Mercedes-benz S 400 D 4matic registrations in Europe between 2010 and 2025. These are new-car registrations reported by member states, not the number currently on the road.

Mercedes-benz · EU monitoring data

Mercedes-benz S 400 D 4matic: CO2 & EU registrations

13,486 new registrations on record, fleet-average CO2 from 185 g/km (WLTP, 2025). Official data reported by EU member states.

By year and fuel type

Fleet averages across all Mercedes-benz S 400 D 4matic registrations of that year and fuel. CO2 is WLTP where available (NEDC shown for older years). Consumption is l/100km for combustion, Wh/km for electric.

Year	Fuel	Registrations	CO2 WLTP	CO2 NEDC	Consumption	Mass kg	Power kW
2025	Diesel	23	185 g/km	-	7.1 l/100km	2,065	243
2024	Diesel	103	187.3 g/km	-	7.1 l/100km	2,076	243
2023	Diesel	1,822	187.5 g/km	-	7.1 l/100km	2,076	243
2022	Diesel	2,200	186.4 g/km	-	7.1 l/100km	2,101	243
2021	Diesel	3,684	191.9 g/km	-	7.3 l/100km	2,083	243
2020	Diesel	1,205	195 g/km	167.4 g/km	-	2,102	249
2019	Diesel	1,266	195.5 g/km	164.5 g/km	-	2,100	250
2018	Diesel	2,022	185.7 g/km	153.4 g/km	-	2,082	250
2017	Diesel	1,140	-	149.7 g/km	-	2,071	264
2016	Diesel	21	-	-	-	2,083	250

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Source: European Environment Agency, CO2 emissions from new passenger cars (Regulation (EU) 2019/631 monitoring), CC-BY 4.0, attribution EEA / DG CLIMA. Figures are fleet averages of new registrations, not per-vehicle values. Details on About & Data Sources.