Mercedes-Benz G 350 2019
Analysis of 6 active listings for Mercedes-Benz G 350 2019 from mobile.bg, cars.bg and other sources. Real market prices, known engine issues and what to check before buying.
Diesel 8
📊 Market data
- Cheap listings105 433 €
- Typical price117 520 €
- Expensive listings173 559 €
- Average mileage128 833 км
⚙️ Engines — what to expect
Mercedes OM656 3.0 I6 diesel — OM656
Known issues
- Dual SCR catalyst with complex dosing — sensor/injector issues possible. (~300–1 000 € repair)
- NOx sensors can fail and trigger limp mode. (~300–900 € repair)
- EGR cooler can crack internally, causing coolant loss. (~500–1 200 € repair)
Mercedes OM642 3.0 V6 diesel — OM642
Known issues
- MOST IMPORTANT ISSUE: Oil cooler seals leak — oil enters the V of the engine and can drip onto the hot turbo/exhaust. FIRE RISK. Also contaminates coolant with oil. Check for oil residue in the engine valley. The repair requires intake manifold removal and is labor-intensive. (~800–2 500 € repair)
- Intake swirl flap actuator rod breaks — causes limp mode. If swirl flap debris enters engine, catastrophic damage possible. Many owners delete the swirl flaps. (~300–3 000 € repair)
- Electronic turbo actuator fails — causes limp mode and reduced power. OEM replacement is expensive but aftermarket rebuilds available. (~400–1 200 € repair)
- Injector seals leak exhaust gases — creates black carbon 'tar' around injectors (called 'black death'). If caught early, seal replacement is cheap. If ignored, injector extraction becomes very expensive. (~200–2 000 € repair)
- City-only driving clogs the DPF. Forced regeneration or replacement may be needed. (~500–1 400 € repair)
🚨 What to check before buying
Overall risk score: 10/10
Serious risks
- AdBlue system complexity: Dual SCR catalyst with complex dosing — sensor/injector issues possible.
- NOx sensor faults: NOx sensors can fail and trigger limp mode.
Additional notes
- Diesel car from before 2018 with very low mileage suggests city-only use — DPF is likely clogged or has been removed (illegal). Check DPF status and EGR condition.
- IMPORTANT: Mercedes OM642 3.0 V6 diesel has a KNOWN oil cooler seal leak issue. Oil leaks into the engine valley and can drip onto hot exhaust/turbo components — FIRE RISK. Check for oil residue in the engine valley. Budget €800-2,500 for oil cooler reseal. This should be done preventatively.
- Mercedes OM642 3.0 V6 diesel with 120k+ km has two major known issues: (1) Swirl flap linkage failure — plastic/metal rod breaks, debris can enter engine. Emergency repair €800-2,000. (2) Oil cooler seal leak — oil mixes with coolant, can destroy the engine if not caught early. Repair €600-1,500. Also check for turbo actuator wear and DPF condition. Despite these issues, the engine itself is mechanically strong when properly maintained.
- Diesel car from before 2018 with very low mileage suggests city-only use — DPF is likely clogged or has been removed (illegal). Check DPF status and EGR condition.
🔥 Current market offers
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