2024 Mercedes-Benz AMG Gt

The hand-built 4.0L M178 bi-turbo V8 engine in the AMG GT positions its turbochargers inside the V of the cylinder banks (hot-V configuration). This design, while performance-oriented, causes the turbocharger oil supply and return lines to develop leaks due to extreme heat exposure. Owners notice oil smell, smoke from the engine bay, and oil staining on the rear of the engine.

Dealer replaces the turbocharger oil supply and return line gaskets. Updated heat-resistant gaskets are available under revised part numbers. The turbocharger heat shields should also be inspected and replaced if warped. Covered under AMG powertrain warranty.

The AMG SPEEDSHIFT DCT 7-speed dual-clutch transmission can experience premature clutch wear, particularly in vehicles used for track days or spirited driving. Symptoms include clutch slip under hard acceleration, burning smell, delayed gear engagement, and eventually a 'Transmission Visit Workshop' warning. The clutch packs are a wear item but can require replacement as early as 20,000-30,000 miles in aggressive driving.

Dealer replaces the dual-clutch assembly and flywheel. The transmission control module software should be updated and the clutch adaptation performed. AMG Performance warranty may cover premature clutch failure if within limits. Reference TSB LI27.20-P-071320 for AMG DCT clutch diagnosis.

The AMG GT uses electronically controlled active engine mounts that adjust stiffness based on driving mode and conditions. These mounts can fail, causing excessive engine vibration transmitted to the cabin, clunking noises during acceleration and deceleration, and poor NVH (noise, vibration, harshness) characteristics. The active mount solenoids are susceptible to heat damage from the engine's proximity.

Dealer replaces the active engine mount(s). Both mounts should be replaced simultaneously for balanced performance. The engine mount control module may need to be reprogrammed. Reference TSB LI22.00-P-069876 for active engine mount diagnosis.

AMG GT models equipped with optional carbon ceramic brakes can develop surface cracking on the rotors, which is visible as a network of fine cracks on the braking surface. While some surface cracking is considered normal for carbon ceramic material, excessive cracking can lead to brake squeal, uneven pad wear, and reduced braking performance. Cold weather and low-speed city driving accelerate surface deterioration.

Dealer inspects the rotors per AMG carbon ceramic brake service guidelines. Rotors with cracks deeper than 1mm or extending to the edge require replacement. Proper bedding procedure after installation is critical. Carbon ceramic rotors are extremely expensive but should last 60,000-100,000 miles under normal use.

The AMG GT's high-performance rear differential experiences mount bushing degradation from the extreme torque loads (up to 516 lb-ft from the 4.0L V8). Owners notice a clunking or banging noise from the rear end during hard launches, gear changes under power, and tip-in/tip-out throttle transitions. The rubber bushings crack and compress, allowing the differential to shift and creating driveline slack.

Dealer replaces the rear differential mount bushings with updated units. Some owners upgrade to solid polyurethane or Delrin bushings for improved durability, though this increases NVH. The differential fluid should be changed simultaneously. Reference TSB LI35.30-P-068854 for rear differential noise.