2013 — 2014
6.2L M156 V8 - 507HP High Output
Petrol
Gently accelerate from a stop and listen for any clicking or rhythmic noises from the rear end; this helps identify the condition of the limited-slip differential which is a known area for long-term wear.
While parked on a flat surface, check the coolant reservoir for any signs of milky residue or oil droplets, as the head bolt design in some M156 engines can occasionally warrant a professional inspection.
Listen closely during cold starts for a brief 'rattle' from the top of the engine; this is a common point of interest regarding the hydraulic cam adjusters in this high-performance V8.
During low-speed maneuvering, pay attention to the feel of the steering and suspension; given the 507's firmer setup, any clunking often points toward control arm bushings that may be reaching the end of their service life.
Consider a full transmission fluid and filter flush to ensure the MCT gearbox continues its crisp shifting performance.
An ideal time to have a specialist assess the engine mounts, as the immense torque of the 6.2L V8 can lead to them softening over time.
The general interval where cooling system components like the radiator and expansion tank should be reviewed for signs of age-related brittleness.
Keep a close eye on your engine oil levels; the M156 is a performance engine that appreciates regular top-ups between service intervals.
Stick to high-quality 5W-40 or 0W-40 full synthetic oil that meets Mercedes-Benz specifications to keep that V8 singing.
Ensure your brake fluid is flushed every two years to maintain the sharpness of the high-performance braking system.
Regularly clear the front air intakes and radiator shrouds of any debris to ensure the cooling system operates at peak efficiency.
Use high-octane 98 fuel to ensure the engine management system is always running within its optimal parameters.
Estimated repair costs if issues arise
In cars of this age, it's common to consider the internal components of the cam adjusters. If they eventually become noisy, it involves a specialized job to replace the internals and ensure the timing remains precise.
The Edition 507 features upgraded braking hardware. Depending on how the car has been driven, you might eventually need to budget for rotors and pads; choosing genuine or high-end performance equivalents is highly recommended for safety.
If the ride feels less composed than when it was new, you might eventually need to consider refreshing the shocks and control arm bushings. This will restore the factory-intended handling characteristics.
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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