2005 — 2011
1.7L M266 I4 - B180 Petrol
Petrol
Test drive task: Gently accelerate through the gears. | Observation: Be mindful of any 'jerking' or hesitation, as the CVT transmission in this model can sometimes show its age through belt wear or sensor issues.
Check this by: Turning the steering wheel fully to both locks while stationary. | Observation: Listen for any whining noises, as the electric-hydraulic power steering pumps can become tired over high-mileage cycles.
While parked: Check under the engine bay for any oil or coolant dampness. | Observation: The M266 engine has various gaskets and seals that, at this age, may begin to seep fluid, which is quite common for this generation.
Check this by: Operating the air conditioning across all zones. | Observation: Ensure the air cools down promptly, as the AC compressor and condenser units are known to require professional maintenance as they approach their later service life.
Usually a great time to check suspension bushings and engine mounts for any signs of perishing.
A standard point to ensure the cooling system, including the thermostat and water pump, has been serviced to avoid any future heating issues.
Focus shifts to the transmission fluid and electronic control units to ensure the car continues to shift smoothly.
Confirm if the CVT transmission fluid has been replaced, as this is vital for smooth operation.
Check for any stored fault codes using an OBD-II scanner during your inspection.
Verify the service history specifically for regular engine oil and filter changes.
Ensure all electrical features, like windows and dashboard displays, are functioning consistently.
Inspect the condition of the drive belts for any cracking or fraying.
Estimated repair costs if issues arise
If the transmission requires internal attention or sensor replacement, it is wise to be prepared as these units are complex to service.
To keep the ride quality feeling like a true Mercedes, you might eventually need to budget for refreshing the suspension components.
Depending on the car's history, you might eventually need to budget for minor oil leak repairs to keep the engine bay clean and running efficiently.
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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