Mercedes-Benz · Known Issues
2021 Mercedes-Benz GLE Problems: 20 Known Issues
2021 model year · 4,400+ owner reports · Updated September 2026
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2021 model year · 4,400+ owner reports · Updated September 2026
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 4,400+ owner reports, the 2021 Mercedes-Benz GLE has 20 documented known issues, with 7 rated critical. The most serious are Air Suspension Compressor Failure ($600-$2,500 repair), 48V Mild-Hybrid ISG / 48V Battery Malfunction Causing Sudden Power Loss ($800-$4,500 repair), A/C Drain Hose Water Intrusion into Front Footwells (Recall 21V-288), ESP (Electronic Stability Control) Software Non-Conformance – NHTSA Recall 21V-071, Electric Power Steering (EPS) Sudden Loss of Assist - "Power Steering Malfunction, See Operator's Manual" ($400-$5,000 repair), M264 2.0L Turbo Timing Chain Tensioner Wear / Chain Rattle ($1,591-$2,600 repair) and Diesel AdBlue / SCR NOx Sensor Fault Triggering Restart Countdown and No-Start ($400-$1,200 repair). The most commonly reported issue is Air Suspension Compressor Failure with 1,800 owner reports. Across all issues with published estimates, repair costs range from $150 to $7,000. DIY maintenance guides at au7o.io.
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According to Au7o's analysis of 4,400+ owner reports, the 2021 Mercedes-Benz GLE has 20 documented issues. The most frequently reported are: Air Suspension Compressor Failure, 48V Mild-Hybrid ISG / 48V Battery Malfunction Causing Sudden Power Loss, A/C Drain Hose Water Intrusion into Front Footwells (Recall 21V-288). Of these, 7 are rated critical and should be addressed promptly.
The 2021 Mercedes-Benz GLE has 20 known issues documented across 4,400+ owner reports. 7 issues are rated critical: Air Suspension Compressor Failure and 48V Mild-Hybrid ISG / 48V Battery Malfunction Causing Sudden Power Loss and A/C Drain Hose Water Intrusion into Front Footwells (Recall 21V-288) and ESP (Electronic Stability Control) Software Non-Conformance – NHTSA Recall 21V-071 and Electric Power Steering (EPS) Sudden Loss of Assist - "Power Steering Malfunction, See Operator's Manual" and M264 2.0L Turbo Timing Chain Tensioner Wear / Chain Rattle and Diesel AdBlue / SCR NOx Sensor Fault Triggering Restart Countdown and No-Start. 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.
Repair costs for known Mercedes-Benz GLE issues range from $0 to $7,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Air Suspension Compressor Failure, typically costs $600-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The AIRMATIC compressor fails prematurely on the GLE, typically after one or more air springs develop slow leaks. The heavy SUV puts more stress on the compressor than sedan applications, accelerating wear. Repairs typically run $600-$2,500. Severity: high.
GLE models equipped with the EQ Boost 48-volt mild-hybrid system (GLE 350, GLE 450, GLE 450d, GLE 580 and AMG variants on the W167 platform) commonly trigger a '48V Battery Malfunction' or 'Hybrid System Error' warning. The integrated starter-generator (ISG) and 48V lithium-ion b… Repairs typically run $800-$4,500. Severity: high.
Recall 21V-288 directly covers certain model-year 2020-2021 GLE-Class vehicles whose air-conditioning drain hoses might be incorrectly installed, allowing condensation water into the passenger compartment. Water in the front footwells can corrode or short electrical components an… Severity: high.
Recall 21V-071 directly covers certain model-year 2020-2021 GLE 350 and GLE 450 vehicles whose ESP software might not meet current production specifications and FMVSS 126. In a specific rapid evasive maneuver, torque may be applied to a front wheel and pull the vehicle to one sid… Severity: high.
GLE owners (W166 and W167) report sudden loss of electric power steering assist, sometimes immediately after engine start and sometimes intermittently while driving, accompanied by the red dashboard message "Power Steering Malfunction - See Operator's Manual." Steering becomes ve… Repairs typically run $400-$5,000. Severity: high.
The base GLE 350's M264 2.0L turbo four-cylinder can develop a worn/weak timing chain tensioner and chain stretch, producing a rattle (often on cold start or under load) from the front of the engine. If ignored, chain stretch can throw camshaft/crankshaft correlation codes and, i… Repairs typically run $1,591-$2,600. Severity: high.
On diesel GLEs, the SCR/AdBlue emissions system enforces compliance with a start countdown: when it detects a fault it warns 'You can restart the engine X more times,' and once the counter expires the car will not start until the fault is fixed and the counter is reset. The most… Repairs typically run $400-$1,200. Severity: high.
The 4MATIC transfer case on 2016+ GLE develops two related failures over time: stretched drive chains (which cause a metallic rattle or grinding noise from under the vehicle, most audible at low speeds or under light acceleration) and worn output-shaft bearings (which produce a w… Repairs typically run $2,000-$7,000. Severity: medium.
The rear differential develops a leak at the pinion seal or cover gasket. Fluid loss causes differential whine and, if left unaddressed, can lead to bearing and gear damage from insufficient lubrication. Repairs typically run $200-$800. Severity: medium.
On the W167 GLE (2020-2024), the front radar sensor behind the grille that feeds Distronic adaptive cruise control, Active Brake Assist and PRE-SAFE frequently faults, throwing 'Pre-Safe Functions Currently Limited' and disabling those safety systems. Code P2583 indicates the fro… Repairs typically run $0-$1,200. Severity: medium.
The GLE power tailgate uses a motorized spindle drive on the passenger side plus a gas strut on the driver side, managed by a dedicated Tailgate/rear-compartment control module. A very common complaint is the gate opening a few inches then stopping or immediately re-closing, inte… Repairs typically run $300-$1,300. Severity: medium.
The GLE uses a small secondary AGM 'auxiliary' battery (separate from the main starter battery and the 48V mild-hybrid battery) that stabilizes voltage for the electrical/stop-start system. It is a known wear item that typically dies at 4-6 years, throwing a persistent 'Auxiliary… Repairs typically run $150-$450. Severity: medium.
Both W166 (2016-2019) and W167 (2020+) GLEs wear out the front lower control arm bushings. The lower arm carries multiple rubber bushings (including a rear 'lollipop' mount to the body) that tear with age, producing a clunk/knock over bumps, a wandering or vague feeling in the st… Repairs typically run $400-$1,000. Severity: medium.
The large panoramic roof has four corner drain tubes that route rainwater down the pillars. Over time the tubes clog with dirt/pollen/debris and the perimeter rubber seals degrade, so water backs up and drips onto the headliner, A-pillars, and front footwells, or pools and causes… Repairs typically run $150-$700. Severity: medium.
The GLE uses fluid-filled (hydraulic) engine and transmission mounts to isolate NVH. These are a known consumable that ruptures and leaks its damping fluid, often well before 60-70k miles. A collapsed mount transmits noticeable vibration through the steering wheel, seats, and flo… Repairs typically run $400-$1,200. Severity: medium.
The GLE's full-LED / MULTIBEAM headlights are ventilated for heat, but when the factory seal or housing gasket fails, humid air enters and heavy condensation forms — large droplets and standing water at the bottom of the housing (not the light misting Mercedes considers normal). Repairs typically run $300-$2,500. Severity: medium.
GLE plug-in hybrids (W166 550e; W167 350de diesel-PHEV and 450e) frequently show AC-charging faults: charging starts then stops and restarts, a red plug icon, or the car refuses to accept a charge at home/wallbox. Documented triggers include the vehicle halting when the voltage d… Repairs typically run $200-$1,500. Severity: medium.
GLE 350 and GLE 450 models (2020+, 9G-Tronic 9-speed automatic) develop harsh low-gear shifts, clunking, and delayed engagement when selecting Drive or Reverse as the transmission ages. The most common root cause is degradation of the valve-body solenoids and conductor plate, agg… Repairs typically run $400-$3,500. Severity: medium.
The 3.0L M256 inline-six (GLE 450, AMG GLE 53 on the W167) is prone to oil leaks from the oil filter housing/adapter assembly, which integrates the engine oil cooler with coolant passages, making leaks both oil and coolant related. The M256 also relies on an electric coolant pump… Repairs typically run $600-$2,200. Severity: medium.
The infotainment system (COMAND on 2016-2019, MBUX on 2020+) freezes or reboots. The COMAND hard drive fails over time while the MBUX system is susceptible to software glitches with connected phones. Repairs typically run $0-$2,500. Severity: low.
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.