2015 Mercedes-Benz GL450
Problems, Recalls & Reliability Report
Quick Summary
The 2015 Mercedes-Benz GL450 has 24 owner complaints filed with NHTSA — that's 0.5x the segment average of 48. The most common issue is engine problems (29% of all complaints), specifically: tl* the contact owns a 2015 mercedes-benz gl450. while driving 40 mph, the vehicle stalled and the pre-safety function limited warning indicator illuminated. the vehicle was pushed over to the side of the road by the contact and passenger. the contact attempted to restart the vehicle, but it failed . ⚠️ 3 fire reports filed.
24
Total Complaints
0
Recalls Issued
—/5
Safety Stars
0.5x
vs Segment Avg
Known Problems(top 5 of 8)
ENGINE
7 complaints- • TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ GL450. WHILE DRIVING 40 MPH, THE VEHICLE STALLED AND THE PRE-SAFETY FUNCTION LIMITED WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS PUSHED OVER TO THE SIDE OF THE ROAD BY THE CONTACT AND PASSENGER. THE CONTACT ATTEMPTED TO RESTART THE VEHICLE, BUT IT FAILED
- • PLASTIC COOLANT UNION ON RADIATOR HOSE GOING FROM THE COOLANT EXPANSION TANK TO THE ELECTRIC AUXILIARY COOLANT PUMP CATASTROPHICALLY FAILED WHEN I WAS CHANGING THE LH DRIVER SIDE FRONT HEADLIGHT BULB. I WAS LEANING OVER THE FRONT OF THE VEHICLE WITH MY HEAD DOWN TO VIEW THE BACK SIDE OF THE HEADLAMP
- • The rubber sealing around the lift gate failed on the vehicle and water seeped inside the vehicle and entire bottom of the vehicle underneath the floor board thereby damaging the electronic components, engine wire harness and headliner thereby rendering the vehicle was beyond repair. This issue led
“TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ GL450. WHILE DRIVING 40 MPH, THE VEHICLE STALLED AND THE PRE-SAFETY FUNCTION LIMITED WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS PUSHED OVER TO THE SIDE OF THE ROAD BY THE CONTACT AND PASSENGER. THE CONTACT ATTEMPTED TO RESTART THE VEHICLE, BUT IT FAILED ”
— NHTSA complaint filing
When Problems Appear on the 2015 Mercedes-Benz GL450
Based on 11 owner complaints that included an odometer reading. Median mileage at time of complaint: 25K miles. Most complaints cluster in the 0-30K miles range.
Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.
Fuel Cost Calculator for 2015 Mercedes-Benz GL450
Live EIA pricesBased on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.
5-Year Gas Price History
EIA weekly retail data · 2021 → todaySource: US Energy Information Administration weekly retail gasoline prices.
Estimated Insurance Cost for 2015 Mercedes-Benz GL450
How this estimate is calculated
Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.
Maintenance & Warranty
Recommended Mercedes-Benz GL450 Service Intervals
Service A / Service B alternating schedule. Requires MB-approved oil (229.5 spec typically).
"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.
Mercedes-Benz New-Vehicle Warranty Coverage
EQ EV battery warranty is 10 years/155,000 miles
These are the terms for a new Mercedes-Benz. If you're buying a used 2015 GL450, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Mercedes-Benz dealer for VIN-specific remaining warranty.
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 24 owner complaints for this specific year, here's what to check or ask about:
- ☐ENGINE: TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ GL450. WHILE DRIVING 40 MPH, THE VEHICLE STALLED AND THE PRE-SAFETY FUNCTION LIMITED WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS PUSHED OVER TO THE SIDE OF THE ROAD BY THE CONTACT AND PASSENGER. THE CONTACT ATTEMPTED TO RESTART THE VEHICLE, BUT IT FAILED
Typically appears around 50K miles. Repair cost ~$500
- ☐SEATS/RESTRAINTS: TL* THE CONTACT OWNS A 2015 MERCEDES BENZ GL450. THE CONTACT STATED THAT THE HEADREST PREVENTED THE CONTACT FROM PROPERLY INSTALLING A CHILD SAFETY SEAT IN THE REAR OF THE VEHICLE. THE CONTACT MENTIONED THAT THE HEADREST COULD ONLY BE REMOVED BY THE DEALER. THE VEHICLE WAS TAKEN TO THE DEALER, BUT W
Typically appears around 50K miles. Repair cost ~$500
- ☐SUSPENSION: GL 450 WITH VIN [XXX] EXPERIENCED EXACT PROBLEM DEFINED BY NHTSA RECALL # 18V272 IN MAY 2018 (2 OR 3 WEEKS PRIOR TO RECEIVING RECALL NOTICE FROM MERCEDES-BENZ USA). DEALERSHIP, MERCEDES-BENZ OF MIDLOTHIAN VIRGINIA, PERFORMED REPAIR WORK REQUIRED (BASED URGENT NEED FROM MIL SAYING "DO NOT DRIVE VEHI
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: SAME ISSUE AS RECALL CAMPAIGN 2017020016 LAUNCH. THE LATCH SECURING THE THE CENTER CONSOLE DOORS MIGHT NOT MEET THE REQUIREMENTS OF FMVSS 201. THE SAME BASIC DESIGN OF THE RECALLED 2017 GLS CLASS SUV CENTER CONSOLE HAS BEEN IN USE IN OTHER GL AND GLS MODELS FOR A NUMBER OF YEARS.
Typically appears around 50K miles. Repair cost ~$500
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Mercedes-Benz GL450 — Year Comparison
How does 2015 compare to other years? Fewer complaints = more reliable.
NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 24
- Recalls
- 0
- Fire reports
- 3
- Crash reports
- 1
- Injury reports
- 1
- Segment avg
- 48
Check a Specific VIN
See recalls for YOUR 2015 Mercedes-Benz GL450