2013 — 2015
6.2L M156 V8 - High output performance version
Petrol
Gently accelerate from a stop and listen closely for any rhythmic 'ticking' or 'clicking' from the engine bay, as the M156 valvetrain can develop hydraulic lifter noise over time.
Find a quiet road and perform a firm brake test; check that the front two-piece composite rotors don't show signs of pulsating or 'warping' under load, as these are premium components.
While parked and idling, cycle through the MCT gearbox modes and ensure there is no harsh clunking during gear changes, as the wet-clutch pack requires smooth engagement.
Look under the car and check the underside of the engine bay for any signs of weeping fluids, specifically paying attention to the head bolt area and timing chain cover, which are common areas for minor seepage in high-output units.
Consider a full transmission service including a new filter and fluid, as the MCT transmission thrives on fresh oil.
Typically the time to inspect the suspension bushings and ball joints, as the weight of the V8 can accelerate natural wear.
Often an opportune time to carry out a comprehensive cooling system health check and refresh the coolant to protect the M156 internals.
Keep a close eye on your engine oil levels; the M156 engine is known to enjoy a little bit of oil between services, so always keep a top-up bottle in the boot.
Ensure the servicing history is strictly documented, ideally through an authorized Mercedes-Benz dealership or a well-known specialist who understands the 6.2L V8.
Check your tyre pressures weekly to ensure even wear, as this car is quite heavy on rear tyres due to the massive torque output.
Always allow the engine to reach full operating temperature before pushing the throttle, as the internal components appreciate a gradual warm-up.
Stick to premium 98 octane fuel to ensure the engine runs at its peak performance and to protect the fuel injection system.
Estimated repair costs if issues arise
The Edition 507 features unique lightweight compound discs which are spectacular for stopping power, but they are a specialized item to replace when they eventually reach their minimum thickness.
In cars of this age, it is wise to keep an eye on the valvetrain health. If the engine develops a distinct tick, you might eventually need to budget for a professional inspection of the cams and lifters.
Given the performance nature of the 507, suspension bushings may eventually soften over time. Refreshing these keeps the handling sharp and factory-fresh.
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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