Service A / Service B
About 25,000 km or 1 year (ASSYST)
25 000 km
12 months
Oil and filter at each service; Service B adds filters and wider checks. The ASSYST indicator prevails.
Source [1]C257 · 2019–2023
Mercedes CLS CLS 300 C257 · 258 hp (2019 to 2023)
The Mercedes CLS CLS 300 of the C257 generation uses the M264 2.0 petrol engine with 258 hp.
Choose an engine
Identify the car and prepare its maintenanceTechnical specifications
- Fuel
- Petrol
- Power
- 258 PS / 190 kW
- Displacement
- 1 991 cm³
- Cylinders
- 4
- Engine code
- M264 2.0
- Period covered
- 2019–2023
- Documented market
- Europe
Transmission
- Automatic · 9 speeds
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] AutoKarnet
This version
258 hp (190 kW), rear-wheel drive, 9-speed automatic. Built from 2019 to 2023. 48 V mild hybrid: a small starter-generator assists the engine when pulling away and accelerating; the 48 V battery needs no routine maintenance.
AutoKarnet advice
In the range
It is the entry-level petrol version of this generation. The M264 2.0 engine is also fitted to: Mercedes Classe C (W205), Mercedes Classe E (W213), Mercedes GLC (X253).
AutoKarnet advice
Maintenance and records
Brake fluid
Every 24 months
24 months
Time-based replacement, whatever the mileage.
Source [1]Questions about this version (2)
Which engine is in the Mercedes CLS CLS 300 C257?
The M264 2.0 petrol engine (1 991 cc), 258 hp (190 kW).
AutoKarnet advice
Which oil for the Mercedes CLS CLS 300?
A MB 229.5 / 229.51 / 229.52-approved oil suited to the M264 2.0 engine.
AutoKarnet advice
Documentary sources
- [1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026