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Mercedes Benz Cls Service Schedule & Costs

Every service item for the Mercedes Benz Cls — what needs doing, when, and what it should cost at an independent garage versus a main dealer.

C219 (2003–2010)3.0 CDI, 3.5, 3.5 CDI, 5.0, 5.4
C218 (2011–2018)2.1 CDI, 3.0 CDI, 3.5, 5.5 AMG
C257 (2018–2024)2.0 CDI, 2.9 CDI, 3.0

Mercedes Benz Cls service: key facts

Routine service items

These are the items covered in a standard service. Most garages include oil, oil filter and a basic inspection. The rest are typically checked or replaced on a schedule.

Service itemIntervalTypical cost
Engine oil and filter
Mercedes-Benz ASSYST service indicator system calculates intervals based on driving conditions, typically 12,500 miles or 12 months.
C219, C218, C257
 12,500 miles or 1 year
£120–£180
Dealer: £250–£400
Air filter
Replace every 3 services or 37,500 miles.
C219, C218, C257
 37,500 miles or 4 years
£40–£80
Dealer: £80–£150
Cabin pollen filter
Annual replacement recommended.
C219, C218, C257
 12,500 miles or 1 year
£30–£60
Dealer: £60–£120
Fuel filter
Diesel variants only - replace every 37,500 miles.
C219, C218, C257
 37,500 miles or 4 years
£150–£250
Dealer: £250–£450

Periodic maintenance

Items that don't need doing at every service but should be on your radar at the right mileage or age.

Service itemIntervalTypical cost
Brake fluid
Replace every 2 years regardless of mileage.
C219, C218, C257
 2 years
£80–£120
Dealer: £150–£250
Spark plugs
Replace every 37,500 miles or 4 years for petrol engines.
C219, C218, C257
 37,500 miles or 4 years
£120–£200
Dealer: £200–£400
Coolant flush
Mercedes-Benz recommends 10-year or 75,000-mile intervals using MB 325.0 specification coolant.
C219, C218, C257
 75,000 miles or 10 years
£150–£250
Dealer: £300–£500

Known issues to watch for

The most common problems reported on the Mercedes Benz Cls, ranked by severity.

dangerous
Brake pipe corrosion and failure
CLS models show significantly elevated brake pipe corrosion rates, with MOT data showing failure rates up to 8.1x the fleet average.
major
Wheel bearing excessive play and failure
CLS models experience wheel bearing failure at 20.1x the fleet average rate, affecting all engine variants across the model range.
major
Suspension component wear
The CLS features a complex multi-link rear suspension with numerous bushes and joints that wear at 16x the fleet average rate.
major
Electronic parking brake failure (C218)
Second-generation CLS models with electronic parking brake systems show failure rates 14.4x higher than the fleet average.

1 more known issues tracked. Check a specific car's history to see what matters for its age and mileage.

Check a Mercedes Benz Cls's service history

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Mercedes Benz Cls service FAQs

How often should a Mercedes Benz Cls be serviced?

A Mercedes Benz Cls should have an oil service every 12,500 miles or 1 year, whichever comes first. Mercedes-Benz ASSYST service indicator system calculates intervals based on driving conditions, typically 12,500 miles or 12 months.

How much does a Mercedes Benz Cls service cost?

A basic service at an independent garage typically costs £120–£180. Main dealer servicing is usually £250–£400. Major items like timing belts or gearbox services cost significantly more.

Can I service a Mercedes Benz Cls at an independent garage?

Yes. Under UK consumer law, using an independent garage does not void your manufacturer warranty, provided they use parts meeting the manufacturer's specification and follow the correct schedule. However, independent services won't appear in the franchised dealer digital records.