Used Mercedes-Benz G63 AMG

What to know before buying: Mercedes-Benz G63 AMG

From 4 video reviews · updated 23/09/2026

What the reviews say

• The 2017 G63 combines a powerful 5.5-litre V8, all-wheel drive and three differential locks; its cabin seats five comfortably, while folding rear seats expand the cargo area.[1]one source
• The 2025 G63 handles corners well, and its firm AMG suspension disguises much of the vehicle's bulk, but the upright seating position and consumption count against it on long motorway trips.[4]one source
• ReDriven praises the commanding driving position, excellent visibility, comfortable seats and sense of occasion, but reports wind noise and cabin rattles.[3]one source
• In the 2027 model, the 48-volt mild-hybrid system fills the gap before the turbos respond and smooths throttle delivery; the exterior largely retains the shape introduced in 2019.[2]one source

Typical faults

• Owners report that a door-latch spring can detach, leaving the door unable to close or open from inside; rear doors are mentioned particularly often.[3]one source
• Door wiring can develop faults and rear window regulators may fail; repeated door slamming can accelerate problems with electrical components and speaker mounts.[3]one source
• Some control modules may fail to sleep, creating a parasitic drain that prematurely flattens the 12-volt battery and can trigger assorted electronic faults.[3]one source
• A grinding noise from the steering at low speed is reported as a fault that often requires replacement of the complete steering rack.[3]one source
• Technicians report premature suspension-pump and bush wear accompanied by knocks and rattles; under hard use, brake pads and rotors may need replacement after only 10,000–20,000 km.[3]one source

  10 000–20 000 km

• Owners report corrosion around the windscreen, door hinges and tailgate handle; the source identifies poor factory paint quality as a possible cause.[3]one source
• In the V8's hot-V, cooked oil can clog turbo feed lines and cause turbo failure; the water pump, electronic thermostat, charge coolers and heat exchangers can also fail or leak.[3]one source

  V8

Which engine and version to take

• The 2025–2027 4.0-litre biturbo V8 is the defining G63 choice: the sources praise its power, sound and response, while the latest version's 48-volt assistance smooths power delivery.[2][4]

What to avoid

• Avoid a V8 without a complete, verifiable service history: hot-V components are complex and costly, and the source recommends 5,000 km oil-service intervals for longevity.[3]one source

What to check at the inspection

• Verify the complete service history, maintenance gaps, insurance claims, accident damage, completed recalls and consistency of the recorded odometer history.[3]one source
• Operate every door and latch from both sides, test the rear window regulators and all door electrics, and listen for rattling speaker mounts or trim.[3]one source
• Test the adaptive-cruise and parking sensors, LED headlights, every HVAC setting, infotainment, Bluetooth, CarPlay or Android Auto, and the 360-degree camera.[3]one source
• Inspect around the windscreen, door hinges and tailgate handle for corrosion, and check the upright windscreen itself carefully for chips or cracks.[3]one source
• During the test drive, listen for steering grind at low speed, check whether the vehicle tracks straight at motorway speed, and note any suspension knocks or rattles.[3]one source
• On the V8, look for oil and coolant leaks, check the PCV system and investigate any misfire; coolant loss without an external leak may indicate an internally leaking heat exchanger.[3]one source

Verdict

Sources

1. [1]AUTOMOHO — 2017 Mercedes Benz G Class: G63 AMG Full Review /Exhaust /Start Up /Short Drive · ▶ video
2. [2]Nothing But G's — Mercedes-Benz G63 AMG 2027 года: Полный обзор, осмотр и первый тест-драйв · ▶ video
3. [3]ReDriven — Is owning a USED Mercedes-Benz G63 AMG a NIGHTMARE? · ▶ video
4. [4]MercBenzKing — 2025 Mercedes Benz G63 AMG Full Drive Review | Price | Performance | Exhaust | G Wagon · ▶ video

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