What is the 2016-2022 Mercedes-Benz AMG GT Active Transaxle Mount Connectivity Faults and Replacement?

The C190 AMG GT mounts its rear transaxle on three ACTIVE (electronically controlled) mounts that stiffen under hard cornering and soften at idle. The most common reported failure isn't rubber breakdown — it's wiring harness or connector corrosion at the mount sensors, which trip… Repairs typically run $400-$2,800. Severity: medium.

What is the 2016-2022 Mercedes-Benz AMG GT Emergency Call (eCall) Communication Module and SIM Card Failures — Automatic Crash Notification Does Not Transmit?

The AMG GT has been recalled repeatedly across its entire production run for defects in the telematics communication module that carries the emergency call function, and the campaigns stack across different root causes rather than repeating one. NHTSA 21V058000 covers 2016-2021 A… Severity: medium.

What is the 2019-2020 Mercedes-Benz AMG GT Wheel-Hub Center Caps Detach at Speed on GT 53 / GT 63 Four-Door?

The wheel-hub center caps on 2019-2020 AMG GT 53 4MATIC+ and AMG GT 63 4MATIC+ four-door coupes were not manufactured to specification. The fastening clip mechanism cannot withstand the stresses induced in normal driving, and the cap detaches from the wheel hub while the vehicle… Severity: medium.

What is the 2019-2020 Mercedes-Benz AMG GT Incorrect Electronic Stability Program Software Version — ESP Reacts Inaccurately?

NHTSA campaign 20V395000 covers 2019-2020 AMG GT vehicles that left the factory with an incorrect Electronic Stability Program software version installed. With the wrong calibration, the ESP system can react inaccurately — intervening when it should not, or failing to intervene c… Severity: medium.

Mercedes-Benz · Known Issues

2020 Mercedes-Benz AMG GT Problems: 8 Known Issues

2020 model year · 210+ owner reports · Updated September 2026

Share:@au7o.io

According to Au7o's analysis of 210+ owner reports, the 2020 Mercedes-Benz AMG GT has 8 documented known issues, with 4 rated critical. The most serious are Misrouted Transmission Wiring Harness Connector Corrodes and Short-Circuits (Fire Risk, Recall Repeated After Failed First Remedy), 48-Volt EQ Boost System: Loose Ground Cable (Fire Recall) and 48V Battery / Starter-Generator Failure Causing No-Start ($900-$3,500 repair), Getrag 7DCL750 Rear Transaxle Dual-Clutch Failure — Clutch Pack Wear, Speed Sensor Faults and Weep-Hole Leaks ($5,000-$15,000 repair) and Starter Motor Positive Cable Misinstalled — Harness Chafe, Short Circuit, Stall and Fire Risk. The most commonly reported issue is Active Transaxle Mount Connectivity Faults and Replacement with 210 owner reports. Across all issues with published estimates, repair costs range from $400 to $15,000. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Mercedes-Benz AMG GT problems?

According to Au7o's analysis of 210+ owner reports, the 2020 Mercedes-Benz AMG GT has 8 documented issues. The most frequently reported are: Misrouted Transmission Wiring Harness Connector Corrodes and Short-Circuits (Fire Risk, Recall Repeated After Failed First Remedy), 48-Volt EQ Boost System: Loose Ground Cable (Fire Recall) and 48V Battery / Starter-Generator Failure Causing No-Start, Getrag 7DCL750 Rear Transaxle Dual-Clutch Failure — Clutch Pack Wear, Speed Sensor Faults and Weep-Hole Leaks. Of these, 4 are rated critical and should be addressed promptly.

Is the Mercedes-Benz AMG GT reliable?

The 2020 Mercedes-Benz AMG GT has 8 known issues documented across 210+ owner reports. 4 issues are rated critical: Misrouted Transmission Wiring Harness Connector Corrodes and Short-Circuits (Fire Risk, Recall Repeated After Failed First Remedy) and 48-Volt EQ Boost System: Loose Ground Cable (Fire Recall) and 48V Battery / Starter-Generator Failure Causing No-Start and Getrag 7DCL750 Rear Transaxle Dual-Clutch Failure — Clutch Pack Wear, Speed Sensor Faults and Weep-Hole Leaks and Starter Motor Positive Cable Misinstalled — Harness Chafe, Short Circuit, Stall and Fire Risk. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mercedes-Benz AMG GT problems?

Repair costs for known Mercedes-Benz AMG GT issues range from $400 to $15,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2019-2025 Mercedes-Benz AMG GT Misrouted Transmission Wiring Harness Connector Corrodes and Short-Circuits (Fire Risk, Recall Repeated After Failed First Remedy)?

On the X290 four-door AMG GT (GT 43 / GT 53), the transmission wiring harness can be routed incorrectly so that the electrical connector sits where it is exposed to water and road spray. The connector corrodes, and the corroded contacts can short-circuit — which Mercedes-Benz its… Severity: high.

All 8 Known Issues

Other Mercedes-Benz Models

Frequently Asked Questions

What are the most common Mercedes-Benz AMG GT problems?

Is the Mercedes-Benz AMG GT reliable?

How much does it cost to fix common Mercedes-Benz AMG GT problems?

What is the 2019-2025 Mercedes-Benz AMG GT Misrouted Transmission Wiring Harness Connector Corrodes and Short-Circuits (Fire Risk, Recall Repeated After Failed First Remedy)?

2019-2025 Mercedes-Benz AMG GT: Misrouted Transmission Wiring Harness Connector Corrodes and Short-Circuits (Fire Risk, Recall Repeated After Failed First Remedy)#

2019-2025 Mercedes-Benz AMG GT: 48-Volt EQ Boost System: Loose Ground Cable (Fire Recall) and 48V Battery / Starter-Generator Failure Causing No-Start#

2019-2021 Mercedes-Benz AMG GT: Starter Motor Positive Cable Misinstalled — Harness Chafe, Short Circuit, Stall and Fire Risk#

2016-2021 Mercedes-Benz AMG GT: Getrag 7DCL750 Rear Transaxle Dual-Clutch Failure — Clutch Pack Wear, Speed Sensor Faults and Weep-Hole Leaks#

2016-2022 Mercedes-Benz AMG GT: Active Transaxle Mount Connectivity Faults and Replacement#

2016-2022 Mercedes-Benz AMG GT: Emergency Call (eCall) Communication Module and SIM Card Failures — Automatic Crash Notification Does Not Transmit#

2019-2020 Mercedes-Benz AMG GT: Wheel-Hub Center Caps Detach at Speed on GT 53 / GT 63 Four-Door#

2019-2020 Mercedes-Benz AMG GT: Incorrect Electronic Stability Program Software Version — ESP Reacts Inaccurately#

What is the 2019-2025 Mercedes-Benz AMG GT 48-Volt EQ Boost System: Loose Ground Cable (Fire Recall) and 48V Battery / Starter-Generator Failure Causing No-Start?

What is the 2016-2021 Mercedes-Benz AMG GT Getrag 7DCL750 Rear Transaxle Dual-Clutch Failure — Clutch Pack Wear, Speed Sensor Faults and Weep-Hole Leaks?

What is the 2019-2021 Mercedes-Benz AMG GT Starter Motor Positive Cable Misinstalled — Harness Chafe, Short Circuit, Stall and Fire Risk?

What is the 2016-2022 Mercedes-Benz AMG GT Active Transaxle Mount Connectivity Faults and Replacement?

What is the 2016-2022 Mercedes-Benz AMG GT Emergency Call (eCall) Communication Module and SIM Card Failures — Automatic Crash Notification Does Not Transmit?

What is the 2019-2020 Mercedes-Benz AMG GT Wheel-Hub Center Caps Detach at Speed on GT 53 / GT 63 Four-Door?

What is the 2019-2020 Mercedes-Benz AMG GT Incorrect Electronic Stability Program Software Version — ESP Reacts Inaccurately?