2023 — 2026
3.0L Turbo Inline-6 (M256) - CLE 450 4MATIC
Petrol
Cycle through the MBUX infotainment screen while driving to ensure the touch-sensitive steering wheel controls and central display are responsive, as software gremlins can occasionally present in high-tech Mercedes interiors.
Listen carefully at low speeds and over bumps for any unwanted suspension noise, particularly from the adaptive damping system, which can occasionally wear prematurely on performance-oriented Mercedes models.
Check the idle smoothness while parked; the M256 engine is remarkably refined, so any noticeable vibration or hesitation during start-up could be worth investigating further with a pre-purchase inspection.
Test the 9G-TRONIC transmission by performing a mix of light and spirited acceleration to ensure gear changes are seamless and free of 'shuddering' when moving between lower gears.
Routine oil change and cabin filter refresh.
Spark plug replacement and potential transmission fluid service check.
Consider checking suspension bushings and verifying the health of the 48V mild-hybrid battery system.
Keep up with the strict Mercedes-Benz Assyst Plus schedule at a specialist or dealer.
Monitor the engine oil level between services, especially if you enjoy using the power of the Inline-6.
Ensure the cooling system is topped up with factory-approved coolant to protect the complex M256 internals.
Regularly clean and treat the leather or upholstery to prevent premature wear in the New Zealand sun.
Check your tyre pressures weekly, as the low-profile tyres on the CLE 450 are sensitive to road conditions.
Estimated repair costs if issues arise
As the car ages, the integrated starter-generator and 48V battery system may eventually require professional diagnostics or replacement. It is wise to set aside funds for this unique component as the vehicle moves toward higher mileage.
If your specific CLE is equipped with air suspension, remember that air bags and compressors can naturally lose efficiency over time. You might eventually need to budget for a sensor or strut refresh to maintain that signature smooth ride.
The CLE 450 is a powerful machine, and as such, it burns through pads and rotors slightly faster than a standard sedan. Expect to budget for premium replacements once the wear indicators suggest it is time.
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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