Mercedes Benz Clk service: key facts
- Oil service every 12,000 miles or 1 year
- Basic service costs £80–£250 depending on garage
- Automatic transmission fluid: £200–£300 — don't skip this one
- 2 generations from 1997 to 2010
- 8 tracked service items across routine, major, and periodic schedules
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 item | Interval | Typical cost |
|---|---|---|
|
Engine oil and filter
Mercedes ASSYST service indicator system varies interval based on driving conditions.
C208, C209
|
12,000 miles or 1 year |
£80–£120
Dealer: £150–£250
|
|
Air filter
Replace every 24k miles or 2 years. Check more frequently in dusty conditions. Poor air filter condition affects fuel economy and engine performance.
C208, C209
|
24,000 miles or 2 years |
£25–£40
Dealer: £40–£70
|
|
Cabin pollen filter
Replace every 24k miles or 2 years. Located behind glove box. Restricted airflow and musty odours indicate replacement needed.
C208, C209
|
24,000 miles or 2 years |
£20–£35
Dealer: £35–£60
|
|
Fuel filter
Replace every 60k miles on diesel engines. Poor fuel quality can require more frequent changes. Filter blockage causes power loss and potential injection system damage.
C208, C209
|
60,000 miles or 6 years |
£80–£120
Dealer: £150–£220
|
Major service items
These are the big-ticket items. Miss them and you risk engine or gearbox damage. The costs are higher but the consequences of skipping are much worse.
| Service item | Interval | Typical cost |
|---|---|---|
|
Automatic transmission fluid
Mercedes claims 'lifetime fill' but specialists recommend 80k mile changes. Use only MB 236.14 specification ATF. Filter replacement recommended at the same time.
C208, C209
|
80,000 miles or 8 years |
£200–£300
Dealer: £350–£500
|
Periodic maintenance
Items that don't need doing at every service but should be on your radar at the right mileage or age.
| Service item | Interval | Typical cost |
|---|---|---|
|
Spark plugs
Replace every 40k miles on most petrol engines. AMG variants may require more frequent changes at 24k miles. Use NGK or Bosch platinum plugs as specified.
C208, C209
|
40,000 miles or 4 years |
£80–£150
Dealer: £150–£250
|
|
Brake fluid
Replace every 2 years regardless of mileage. Brake fluid is hygroscopic and absorbs moisture over time, reducing effectiveness and causing internal corrosion.
C208, C209
|
2 years |
£60–£90
Dealer: £100–£150
|
|
Coolant flush
Mercedes specifies 12 year or 120k mile intervals with MB 325.0 specification antifreeze. Specialists recommend 6-8 year intervals to prevent corrosion in aluminium engines.
C208, C209
|
120,000 miles or 12 years |
£100–£150
Dealer: £180–£280
|
Check a Mercedes Benz Clk's service history
Enter a reg to see franchised dealer service records — dates, mileage, and work done at every visit.
Check service history£6.99 · Full refund if no records found
Related
Mercedes Benz Clk service FAQs
How often should a Mercedes Benz Clk be serviced?
A Mercedes Benz Clk should have an oil service every 12,000 miles or 1 year, whichever comes first. Mercedes ASSYST service indicator system varies interval based on driving conditions.
How much does a Mercedes Benz Clk service cost?
A basic service at an independent garage typically costs £80–£120. Main dealer servicing is usually £150–£250. Major items like timing belts or gearbox services cost significantly more.
Can I service a Mercedes Benz Clk 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.