2019 — 2026
2.0L M139 I4 Turbo - Base Performance Version
Petrol
Listen carefully for any jerky gear changes or shuddering at low speeds; the 8-speed DCT is highly sophisticated, but some owners report minor hesitations that may require a software recalibration.
While driving, steer firmly on an uneven surface to feel for any clunking from the front end, as the performance-tuned suspension components on the W177 can experience premature wear on rougher Kiwi roads.
Check this by idling the engine with the bonnet up and listening for any high-pitched whirring or unusual chatter from the turbocharger area, ensuring the cooling system hasn't been overworked.
Before finishing your drive, toggle through all infotainment screens and climate settings to confirm the MBUX system is responsive, as glitchy electronic interfaces can sometimes point to battery or grounding quirks.
Usually marks the first major service interval where spark plugs and transmission fluid are inspected.
The period where you might consider a comprehensive inspection of the braking system and potential suspension bushings.
A point where coolant flushes and more intensive preventative maintenance on the high-pressure fuel system are often recommended.
Always use high-quality 98 octane fuel to keep the M139 engine running at its peak efficiency.
Ensure the oil service intervals are strictly adhered to, ideally every 10,000km, to protect that impressive turbocharger.
Keep an eye on tyre tread depth, as the aggressive 4MATIC+ system can wear through performance rubber quite quickly.
Regularly clean the intercooler and radiator intakes to prevent debris buildup, which helps maintain cooling efficiency.
Keep your MBUX software up to date via your local Mercedes-Benz dealer to ensure the car's 'brain' remains smooth and glitch-free.
Estimated repair costs if issues arise
Because the A45 has such immense stopping power, the consumables wear down faster than a standard hatch. You might eventually need to budget for a performance-grade set of rotors and pads.
If this component needs attention in the future, the estimated cost in NZ covers the specialized fluid and filter change required to keep the dual-clutch transmission shifting like new.
Depending on the car's history and the roads it has traveled, you might eventually need to budget for the replacement of electronic dampers or control arm bushings to maintain that sharp AMG handling.
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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