2006 — 2009
3.5L V6 (CLK 350)
Petrol
Test drive task: Shift into reverse and drive, then park | Description: Notice if there is any 'clunk' or hesitation. In the CLK 350, the 7G-Tronic transmission benefits from smooth fluid changes; if it feels jerky, it may be worth checking when the last service was performed.
Test drive task: Listen closely while driving on a bumpy road | Description: Suspension bushes and ball joints on these models can wear over time. If you hear knocking, it is a common area to have inspected by your mechanic to ensure the ride remains as refined as it should be.
Test drive task: Inspect the infotainment screen and climate control | Description: Ensure every button functions correctly. Electrical gremlins are rare but possible; testing every switch ensures the complex internal systems are operating as intended.
Test drive task: Check the engine bay after a warm run | Description: Keep an eye out for any signs of oil seepage around the cam covers. It is a standard check for vehicles of this age to ensure seals are performing their job effectively.
Usually time to inspect the suspension components and potentially the transmission fluid if it hasn't been done recently.
A good point to check the condition of the engine mounts and accessory drive belt system for longevity.
Recommended time for a comprehensive health check on cooling system components like the radiator and water pump.
Verify the service history logbook to ensure regular oil and filter changes have been completed.
Ensure the transmission fluid has been serviced at some point in the vehicle's life.
Check that the panoramic sunroof (if fitted) operates smoothly and the seals are clean.
Inspect the tyres for even wear to ensure the wheel alignment is well-maintained.
Keep a small stash of screenwash and check the cabin air filter to keep the interior fresh.
Estimated repair costs if issues arise
While reliable, this electronic component can eventually require attention if the shifting becomes erratic. It is a common 'Future Budget Planning' item for high-mileage examples.
To maintain that 'Mercedes glide,' you might eventually need to budget for new control arms or bushings. It’s a great way to revitalize the handling if the car starts to feel a bit loose.
If you notice slight vibrations at idle, it's often just the engine mounts showing their age. Planning for this helps keep your CLK feeling smooth and refined.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer