Mercedes-Benz G-Class known issues by generation

By CarWhere Research · Updated

Documented G-Class issues are mostly recalls. The long-running W463 had a 2013–2016 steering coupling campaign, and the redesigned W463A (2019 on) has had rear door latch, front-axle wiring harness, turbo oil-line and fuel-pump recalls. No single mechanical failure pattern is as well documented as on Mercedes' sedans. 5 documented issues, 5 with NHTSA recall numbers.

CarWhere lists 5 documented G-Class issues, including 5 NHTSA safety recalls, each with affected years, engines, symptoms, pre-purchase checks and a source.

G-Class generations at a glance

Mercedes-Benz G-Class chassis codes and the known issues listed for each
Chassis codeModel yearsIssues on this page
W4632002–2018 (W463 G 500/G 550/G 55/G 63/G 65, US)Steering coupling may be under-tightened and wear
W463A2019–present (W463A G 550, AMG G 63, G 580 EV)Rear door latches may not latch or open properly · Front axle wiring harness may chafe on the oil cooler (ABS/ESC loss) · Turbocharger oil feed line may leak (AMG 4.0L V8) · Fuel pump may shut down, causing loss of drive power

W463 G-Class problems (2002–2018)

Steering coupling may be under-tightened and wear (2013–2016)

Safety recall
Chassis:
W463 (G 550, G 63 AMG, G 65 AMG)
Years:
2013–2016
Engine:
All

About 10,800 2013–2016 G 550 and G 63 AMG and 2016 G 65 AMG vehicles were recalled because the steering coupling might not have been tightened enough at the factory. That can let the steering connection wear and, over time, affect steering control. Dealers replace the steering coupling. Owners first received interim notices while parts were prepared, so confirm that the actual repair was performed. Recall repairs are free at any Mercedes-Benz dealer regardless of the vehicle's age or ownership history, and the NHTSA recall lookup shows whether the campaign is still open on a specific VIN.

Symptoms

  • Play or clunk in the steering
  • Vague steering feel

Check before buying

  • Check for steering free play
  • Confirm 17V-250 completion

NHTSA recall: 17V-250 (2017-04) · 10,832 vehicles

Sources: [1]

W463A G-Class problems (2019–present)

Rear door latches may not latch or open properly (2019–2021)

Safety recall
Chassis:
W463A (G 550, AMG G 63)
Years:
2019–2021
Engine:
All

About 17,800 2019–2021 G 550 and AMG G 63 models were recalled because internal components of the rear door latches could stop the doors latching or opening properly. A door that does not latch could open while driving. Dealers replace the rear door latches, and vehicles repaired before the recall must return to have the updated parts fitted. Opening and closing each rear door several times on inspection is a quick check.

Symptoms

  • Rear door not closing fully
  • Rear door hard to open

Check before buying

  • Open and close each rear door several times
  • Confirm 21V-353 completion

NHTSA recall: 21V-353 (2021-05) · 17,800 vehicles

Sources: [3]

Front axle wiring harness may chafe on the oil cooler (ABS/ESC loss) (2019–2021)

Safety recall
Chassis:
W463A (G 550, AMG G 63)
Years:
2019–2021
Engine:
M176 4.0L V8 (G 550); M177 4.0L AMG V8 (G 63)

About 26,000 2019–2021 G 550 and AMG G 63 vehicles were recalled because the front axle wiring harness could rub against an oil cooler and be damaged. A damaged harness can disable anti-lock brakes and electronic stability control. Dealers inspect the harness and either add a protective sleeve or replace it. ABS or ESP warning lights on a test drive are a sign the harness may already be damaged. Recall repairs are free at any Mercedes-Benz dealer regardless of the vehicle's age or ownership history, and the NHTSA recall lookup shows whether the campaign is still open on a specific VIN.

Symptoms

  • ABS or ESP warning lights
  • Stability control unavailable

Check before buying

  • Confirm no ABS/ESP warnings after start
  • Confirm 23V-097 completion

NHTSA recall: 23V-097 (2023-02) · 26,116 vehicles

Sources: [4]

Turbocharger oil feed line may leak (AMG 4.0L V8) (2019)

Safety recall
Chassis:
W463A (AMG G 63)
Years:
2019
Engine:
M177 4.0L twin-turbo AMG V8

About 2,500 2018–2019 AMG vehicles with the 4.0-liter twin-turbo V8, including the 2019 AMG G 63 as well as the E 63, S 63 and AMG GT 63, were recalled because the turbocharger oil feed line could leak. Oil leaking onto hot turbo and exhaust parts can cause a fire. Dealers replace the oil feed line. Oil residue around the turbos is worth checking on any early W463A G 63.

Symptoms

  • Burning oil smell
  • Oil residue near the turbochargers

Check before buying

  • Inspect around the turbochargers for oil
  • Confirm 20V-048 completion

NHTSA recall: 20V-048 (2020-01) · 2,518 vehicles

Sources: [2]

Fuel pump may shut down, causing loss of drive power (2021–2023)

Safety recall
Chassis:
W463A (G 550, AMG G 63)
Years:
2021–2023
Engine:
M176 / M177 4.0L V8

The 2021–2023 G-Class is included in the 2023 fuel pump recall of about 144,000 Mercedes vehicles across most model lines. The fuel pump can shut down while driving, causing a loss of drive power. Dealers replace the fuel pump at no charge. The follow-up campaign 23V-880 covers additional 2022–2024 vehicles, including some G-Class, so check the VIN for both. An engine that stalls while driving loses power assist to steering and brakes.

Symptoms

  • Engine stalling or sudden power loss

Check before buying

  • Check the VIN for 23V-445 and 23V-880

NHTSA recall: 23V-445 (2023-06) · 143,551 vehicles

Sources: [5]

Related G-Class research

This page explains specific mechanical issues and recalls. Which model years drew the most owner complaints is a different question, answered in the years-to-avoid research from NHTSA complaint and service-bulletin counts.

Confirm exactly how a G-Class was built before you buy.

Engine, transmission and factory options decide which of these issues apply. The data card records how a Mercedes-Benz G-Class was built — option codes, paint, upholstery and equipment; CarWhere decodes it from the VIN, free availability check, $9.99 only if build data exists for that car.

Mercedes-Benz data card by VIN

Frequently asked questions

What are the most common Mercedes-Benz G-Class problems?

The best-documented Mercedes-Benz G-Class issues are steering coupling may be under-tightened and wear (W463, 2013–2016), rear door latches may not latch or open properly (W463A, 2019–2021), front axle wiring harness may chafe on the oil cooler (ABS/ESC loss) (W463A, 2019–2021) and turbocharger oil feed line may leak (AMG 4.0L V8) (W463A, 2019). How much each matters depends on the chassis code and engine, so check the section for the exact car you are looking at.

Has the Mercedes-Benz G-Class had any safety recalls?

Yes. Recalls covered on this page include steering coupling may be under-tightened and wear (NHTSA 17V-250), rear door latches may not latch or open properly (NHTSA 21V-353), front axle wiring harness may chafe on the oil cooler (ABS/ESC loss) (NHTSA 23V-097) and turbocharger oil feed line may leak (AMG 4.0L V8) (NHTSA 20V-048). Recall repairs are free at a Mercedes-Benz dealer; check any specific car’s VIN with NHTSA to see whether its recall work was completed.

What should I check before buying a used Mercedes-Benz G-Class?

Check for steering free play. Open and close each rear door several times. Confirm no ABS/ESP warnings after start. Inspect around the turbochargers for oil. A pre-purchase inspection by a Mercedes-Benz specialist covers these and pulls the service history.

Is the Mercedes-Benz G-Class reliable?

The documented Mercedes-Benz G-Class issues are recall campaigns rather than recurring wear-out failures, and recall repairs are done free by Mercedes-Benz dealers. On a used car, the key step is confirming every open recall has been completed for that VIN.

Sources

Issue descriptions are CarWhere’s own summaries of the sources below. Chassis codes covered: W463 (2002–2018 (W463 G 500/G 550/G 55/G 63/G 65, US)), W463A (2019–present (W463A G 550, AMG G 63, G 580 EV)). Repair costs are shown only where a source states them and vary by shop and region.

  1. NHTSA recall 17V-250: G-Class steering coupling (10,832 units) — NHTSA
  2. NHTSA recall 20V-048: AMG 4.0L V8 turbocharger oil feed line (2,518 units) — NHTSA
  3. NHTSA recall 21V-353: G-Class rear door latches (17,800 units) — NHTSA
  4. NHTSA recall 23V-097: G-Class front axle wiring harness chafing (26,116 units) — NHTSA
  5. NHTSA recall 23V-445: Fuel pump shutdown (143,551 units) — NHTSA

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Independent reference compiled by CarWhere — not affiliated with or endorsed by Mercedes-Benz Group AG or Mercedes-Benz USA. Mercedes-Benz, AMG, Maybach and the model names are trademarks of their owner.