2014 Mercedes-Benz GL450

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2014 Mercedes-Benz GL450 has 27 owner complaints filed with NHTSA — that's 0.3x the segment average of 80. The most common issue is engine problems (26% of all complaints), specifically: oil leaking and wicking into camshaft position sensors, camshaft magnets, o2 sensors, engine wiring harness and ultimately, the ecu is destroying all electronic components connected to the engine causing misfiring and seizing. the issue is quite prevalent via internet research as potentially thousan.

Total Complaints

Recalls Issued

—/5

Safety Stars

0.3x

vs Segment Avg

Known Problems

ENGINE

7 complaints

26%

• Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousan
• Car got a check engine for failed turbochargers at 71000 miles. Mercedes refused to acknowledge and get the problem addressed.
• It has makes sound noise and timing chain tension is made very poor not safety , also warming blibd spot frozen not working, display electric poor damage byself tomve fix timing dealer wants 15,000$ to be fix more then value of the suv

Typical onset: 50K miles Est. repair: $500

“Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousan”

— NHTSA complaint filing

VISIBILITY

3 complaints

11%

• WHILE DRIVING ON THE FREEWAY AT ABOUT 70 MPH THE SUNROOF EXPLODED. WE WERE NOT BEHIND ANOTHER CAR AND DRIVING IN THE MIDDLE OF AN UNPOPULATED AREA ALONG THE !-10 FREEWAY. *TR
• TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ GL450. WHILE OPERATING THE VEHICLE, SEVERAL MESSAGES DISPLAYED REGARDING THE PARKING BRAKE RELEASE, TRANSMISSION, AND THE VEHICLE BEING INOPERABLE. ALSO, SEVERAL ELECTRICAL FEATURES MALFUNCTIONED. THE VEHICLE WAS TOWED TO WORLD WIDE MOTORS INC. (3900 EAST 96
• After picking up children from school, I was driving out of the parking lot down a slow-speed arterial road (35 mph posted speed limit). Roughly 30 seconds after reaching the posted speed limit we heard a loud bang (like a gunshot) and immediately pulled over. The middle section of the panoramic sun

Typical onset: 50K miles Est. repair: $500

“WHILE DRIVING ON THE FREEWAY AT ABOUT 70 MPH THE SUNROOF EXPLODED. WE WERE NOT BEHIND ANOTHER CAR AND DRIVING IN THE MIDDLE OF AN UNPOPULATED AREA ALONG THE !-10 FREEWAY. *TR”

— NHTSA complaint filing

OTHER

3 complaints

11%

• CONSISTENT MILDEW FOUL ODOR COMES FROM THE AIR CONDITION.
• SUNROOF EXPLODED AS I WAS DRIVING DOWN THE FREEWAY. ROADWAY WAS SMOOTH AND THERE WERE NO CARS IN FRONT OF ME SO I'M CERTAIN IT WASN'T A ROCK OR OTHER OBJECT THAT BROKE IT.
• Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousan

Typical onset: 50K miles Est. repair: $500

“CONSISTENT MILDEW FOUL ODOR COMES FROM THE AIR CONDITION.”

— NHTSA complaint filing

ELECTRICAL

3 complaints

11%

• TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ GL450. WHILE OPERATING THE VEHICLE, SEVERAL MESSAGES DISPLAYED REGARDING THE PARKING BRAKE RELEASE, TRANSMISSION, AND THE VEHICLE BEING INOPERABLE. ALSO, SEVERAL ELECTRICAL FEATURES MALFUNCTIONED. THE VEHICLE WAS TOWED TO WORLD WIDE MOTORS INC. (3900 EAST 96
• Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousan
• Our vehicles computerized self-diagnostic system (OBD) registered faults.

Typical onset: 50K miles Est. repair: $500

“TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ GL450. WHILE OPERATING THE VEHICLE, SEVERAL MESSAGES DISPLAYED REGARDING THE PARKING BRAKE RELEASE, TRANSMISSION, AND THE VEHICLE BEING INOPERABLE. ALSO, SEVERAL ELECTRICAL FEATURES MALFUNCTIONED. THE VEHICLE WAS TOWED TO WORLD WIDE MOTORS INC. (3900 EAST 96”

— NHTSA complaint filing

TRANSMISSION

2 complaints

• TL* THE CONTACT OWNS A 2014 MERCEDES BENZ GL450. THE CONTACT STATED THAT THE TRANSMISSION JERKED AND HESITATED TO SHIFT. THE FAILURE OCCURRED NUMEROUS TIMES. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES. THE TECHNICIAN REPROGRAMMED THE TRANSMISSION SOFTWARE AND THE MODULE WAS REPLACED; HOWEVER,
• Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousa

Typical onset: 50K miles Est. repair: $500

“TL* THE CONTACT OWNS A 2014 MERCEDES BENZ GL450. THE CONTACT STATED THAT THE TRANSMISSION JERKED AND HESITATED TO SHIFT. THE FAILURE OCCURRED NUMEROUS TIMES. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES. THE TECHNICIAN REPROGRAMMED THE TRANSMISSION SOFTWARE AND THE MODULE WAS REPLACED; HOWEVER,”

— NHTSA complaint filing

Estimated Repair Costs

ENGINE(~50K mi)

$500

VISIBILITY(~50K mi)

$500

OTHER(~50K mi)

$500

ELECTRICAL(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 27 owner complaints for this specific year, here's what to check or ask about:

☐
ENGINE: Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousan
Typically appears around 50K miles. Repair cost ~$500
☐
VISIBILITY: WHILE DRIVING ON THE FREEWAY AT ABOUT 70 MPH THE SUNROOF EXPLODED. WE WERE NOT BEHIND ANOTHER CAR AND DRIVING IN THE MIDDLE OF AN UNPOPULATED AREA ALONG THE !-10 FREEWAY. *TR
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: CONSISTENT MILDEW FOUL ODOR COMES FROM THE AIR CONDITION.
Typically appears around 50K miles. Repair cost ~$500
☐
ELECTRICAL: TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ GL450. WHILE OPERATING THE VEHICLE, SEVERAL MESSAGES DISPLAYED REGARDING THE PARKING BRAKE RELEASE, TRANSMISSION, AND THE VEHICLE BEING INOPERABLE. ALSO, SEVERAL ELECTRICAL FEATURES MALFUNCTIONED. THE VEHICLE WAS TOWED TO WORLD WIDE MOTORS INC. (3900 EAST 96
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)