Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. Mercedes-Benz
  6. /
  7. AMG GT 4-Door
Mercedes-Benz · Known Issues

2020 Mercedes-Benz AMG GT 4-Door Problems & Issues

2020 model year · 500+ owner reports · Updated September 2026

Share:@au7o.io

2020 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$4.99/month plus taxes at launch · No payment today

Preview the XT6 example
Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo
Issue summary

According to Au7o's analysis of 500+ owner reports, the 2020 Mercedes-Benz AMG GT 4-Door has 3 documented known issues, with 1 rated critical. The most serious is Air Suspension Compressor Failure ($1,500-$3,500 repair). The most commonly reported issue is Air Suspension Compressor Failure with 280 owner reports. Across all issues with published estimates, repair costs range from $1,200 to $3,500. DIY maintenance guides at au7o.io.

In This Article

  • AMG GT 4-Door Suspension1
  • AMG GT 4-Door Electrical1
  • AMG GT 4-Door Steering1
  • FAQ
Get Started
Back to top

In This Article

  • Suspension1
  • Electrical1
  • Steering1
  • FAQ

All 3 Known Issues

Filter:
ALL YEARS2025202420232022202120202019
Community reported
280 owners

On the 2019-2025 Mercedes-Benz AMG GT 4-Door, the AMG GT 4-Door Coupe equipped with AMG Ride Control+ air suspension experiences premature compressor failures. The compressor overworks to maintain the low ride height and firm damping settings, leading to overheating and eventual burnout. Failure results in the vehicle dropping to its lowest ride height with no ability to adjust.

This issue also affects: Mercedes-Benz GL-Class, Mercedes-Benz GLC, Mercedes-Benz GLE

Common Symptoms

  • Vehicle sitting low and unable to raise
  • Suspension fault warning on dashboard
  • Compressor running constantly
  • Ride height uneven side to side
  • Unable to select Sport or Comfort modes

How to Fix

Replace the air suspension compressor. Inspect air springs for leaks that may have caused the compressor to overwork. Update the suspension control module software to the latest version which includes improved compressor duty-cycle management.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Mercedes-Benz 099-320-00-04-80 remanufactured AIRMATIC compressor
    OEMMercedes-Benz 099-320-00-04-80 (superseded by 099-320-00-04)

    OEM exchange compressor after compressor failure and all system leak/electrical causes are confirmed Fitment/availability: The direct OEM retailer page identifies 099-320-00-04-80, superseded by 099-320-00-04, and showed $420 plus Add to…

    MBPartsGiant

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • WarningIf you notice the compressor running longer than normal after starting the car, get it checked immediately. An overworking compressor is usually compensating for a slow air leak and will burn out.
Typical repair cost:$1,500 - $3,500

Research This Issue

Based on 280 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence280 owner reportsLast reported by owners Feb 2026Reviewed Mar 2026
Community reported
220 owners

On the 2019-2025 Mercedes-Benz AMG GT 4-Door, the 48V EQ Boost mild-hybrid system battery in AMG GT 43 and GT 53 models degrades prematurely, causing reduced electric assist, ISG (Integrated Starter-Generator) faults, and inability to use electric auxiliary functions. The E Performance plug-in models can also experience 48V system faults separate from the main high-voltage battery.

This issue also affects: Mercedes-Benz C-Class, Mercedes-Benz CLS-Class, Mercedes-Benz E-Class

Common Symptoms

  • EQ Boost system fault warning
  • Reduced electric assist during acceleration
  • ISG not restarting engine smoothly
  • Start-stop system disabled
  • Multiple electrical warning messages

How to Fix

Diagnose the 48V battery state of health with Mercedes Star Diagnostics. If capacity has dropped below threshold, replace the 48V lithium-ion battery pack located in the engine bay. Software calibration is required after battery replacement.

Owner tips & cautions

  • WarningIf the 48V battery fails out of warranty, expect $2,000-$3,000 for replacement. The battery is separate from the main 12V battery and requires dealer-level diagnostics to properly calibrate.
Typical repair cost:$1,200 - $3,000

Research This Issue

Based on 220 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence220 owner reportsLast reported by owners Feb 2026Reviewed Mar 2026

On the 2019-2025 Mercedes-Benz AMG GT 4-Door 4.0L V8 Biturbo M177, mercedes-Benz XENTRY TIPS LI46.80-P-078043 applies to model series 290 with rear-axle-steering option code 201. It documents an instrument-cluster rear-axle-steering message with fault C112571, “actuator blocked,” caused when the vehicle detects high adjustment force. The bulletin does not establish that every warning is a failed actuator or control module, nor does it support the frozen handling and frequency claims.

This issue also affects: Mercedes-Benz EQS, Mercedes-Benz G-Class

Common Symptoms

  • rear-axle-steering message in the instrument cluster
  • C112571 actuator-blocked fault in N68/3 or N68/4
  • high adjustment force confirmed through the applicable XENTRY path

How to Fix

Preserve fault C112571 and follow the VIN-, hardware- and software-specific XENTRY path. The bulletin says older hardware cannot accept the new software and requires a TIPS case; current hardware can receive the specified control-unit software. If the combination does not match exactly, follow the guided test. Do not buy a rear-steer actuator, sensor or control unit from this page; the remedy is configuration-specific and no universal retail fitment is established.

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerifiedLast reported by owners Jan 2026Reviewed Aug 2026
🔧
A mechanic who knows YOUR exact car
Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
Get ahead of Mercedes-Benz AMG GT 4-Door problems — free
Leave your email and we'll alert you the moment there's a new recall or known issue for your Mercedes-Benz AMG GT 4-Door. Free, no account needed.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other Mercedes-Benz Models

Mercedes-Benz GLE24Mercedes-Benz E-Class23Mercedes-Benz GLS23Mercedes-Benz Sprinter22Mercedes-Benz A-Class22Mercedes-Benz GLC22

Frequently Asked Questions

What are the most common Mercedes-Benz AMG GT 4-Door problems?

According to Au7o's analysis of 500+ owner reports, the 2020 Mercedes-Benz AMG GT 4-Door has 3 documented issues. The most frequently reported are: Air Suspension Compressor Failure, 48V Mild-Hybrid Battery Degradation and Faults, Rear Axle Steering System Fault. Of these, 1 is rated critical and should be addressed promptly.

Is the Mercedes-Benz AMG GT 4-Door reliable?

The 2020 Mercedes-Benz AMG GT 4-Door has 3 known issues documented across 500+ owner reports. 1 issue is rated critical: Air Suspension Compressor Failure. 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 4-Door problems?

Repair costs for known Mercedes-Benz AMG GT 4-Door issues range from $1,200 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Air Suspension Compressor Failure, typically costs $1,500-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2019-2025 Mercedes-Benz AMG GT 4-Door Air Suspension Compressor Failure?

The AMG GT 4-Door Coupe equipped with AMG Ride Control+ air suspension experiences premature compressor failures. The compressor overworks to maintain the low ride height and firm damping settings, leading to overheating and eventual burnout. Failure results in the vehicle droppi… Repairs typically run $1,500-$3,500. Severity: high.

What is the 2019-2025 Mercedes-Benz AMG GT 4-Door 48V Mild-Hybrid Battery Degradation and Faults?

The 48V EQ Boost mild-hybrid system battery in AMG GT 43 and GT 53 models degrades prematurely, causing reduced electric assist, ISG (Integrated Starter-Generator) faults, and inability to use electric auxiliary functions. The E Performance plug-in models can also experience 48V… Repairs typically run $1,200-$3,000. Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 500+ owner reports, NHTSA recalls, TSBs, and automotive forums.

What is the 2019-2025 Mercedes-Benz AMG GT 4-Door Rear Axle Steering System Fault?

Mercedes-Benz XENTRY TIPS LI46.80-P-078043 applies to model series 290 with rear-axle-steering option code 201. It documents an instrument-cluster rear-axle-steering message with fault C112571, “actuator blocked,” caused when the vehicle detects high adjustment force. The bulleti… Severity: medium.