Is the 2014 Mercedes-Benz GLK350 reliable?

The 2014 Mercedes-Benz GLK350 has 116 complaints filed with NHTSA (0.7x the segment average). Our reliability verdict: above-average. Most common issue: AIR BAGS problems.

What are common problems with the 2014 Mercedes-Benz GLK350?

Top problems: AIR BAGS (62 complaints, avg repair $500); FUEL SYSTEM (7 complaints, avg repair $500); OTHER (6 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2014 Mercedes-Benz GLK350?

No recalls have been issued for the 2014 Mercedes-Benz GLK350.

How much does it cost to fuel a 2014 Mercedes-Benz GLK350?

The 2014 Mercedes-Benz GLK350 gets 22 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2182. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2014 Mercedes-Benz GLK350?

Estimated US average full-coverage insurance for the 2014 Mercedes-Benz GLK350 is approximately $2,079/year (suv-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2014 Mercedes-Benz GLK350

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2014 Mercedes-Benz GLK350 has 116 owner complaints filed with NHTSA — that's 0.7x the segment average of 159. The most common issue is air bags problems (53% of all complaints), specifically: tl* the contact owns a 2014 mercedes benz glk350. the contact stated while driving approximately 35 mph the front passengers air bag light illuminated intermittently. the failure also occurred whenever there was no passenger in the front seat. the contact was concerned that the air bag could deploy .

4 crash reports 8 injuries

116

Total Complaints

Recalls Issued

—/5

Safety Stars

0.7x

vs Segment Avg

Known Problems(top 5 of 8)

AIR BAGS

62 complaints

53%

• TL* THE CONTACT OWNS A 2014 MERCEDES BENZ GLK350. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH THE FRONT PASSENGERS AIR BAG LIGHT ILLUMINATED INTERMITTENTLY. THE FAILURE ALSO OCCURRED WHENEVER THERE WAS NO PASSENGER IN THE FRONT SEAT. THE CONTACT WAS CONCERNED THAT THE AIR BAG COULD DEPLOY
• 2014 M-B GLK350 WAS TRAVELING ON A SIX LANE ROAD: THREE LANES IN THE NORTH DIRECTION; THREE LANES IN THE SOUTH DIRECTION. GLK350 WAS TRAVELING IN THE NORTH DIRECTION RIGHT LANE AT APPROX. 15 MPH WHEN IT WAS BROADSIDED ON THE DRIVER'S SIDE BY A PICKUP TRUCK WHO WAS COMING FROM THE SOUTH DIRECTION. T
• A MESSAGE APPEARS WITH SEATBELT AND AIR BAG FRONT LEFT MALFUNCTION SERVICE REQUIRED DEALER SAID THERE IS A SENSOR IN SEATBELT TREGERRING THIS MESSAGE.

Typical onset: 50K miles Est. repair: $500💥 1 crashes

“TL* THE CONTACT OWNS A 2014 MERCEDES BENZ GLK350. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH THE FRONT PASSENGERS AIR BAG LIGHT ILLUMINATED INTERMITTENTLY. THE FAILURE ALSO OCCURRED WHENEVER THERE WAS NO PASSENGER IN THE FRONT SEAT. THE CONTACT WAS CONCERNED THAT THE AIR BAG COULD DEPLOY ”

— NHTSA complaint filing

When Problems Appear on the 2014 Mercedes-Benz GLK350

Based on 47 owner complaints that included an odometer reading. Median mileage at time of complaint: 43K miles. Most complaints cluster in the 0-30K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

AIR BAGS

Later than typicalmedian 31K mi · 10 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

BRAKES

Later than typicalmedian 38K mi · 5 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

FUEL SYSTEM

High-mileage issuemedian 72K mi · 5 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

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 2014 Mercedes-Benz GLK350

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,182

Per month

$182

Per mile

18.2¢

MPG

City driving (worst-case MPG)

$2,527/yr

Highway driving (best-case MPG)

$1,847/yr

Based 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 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2014 Mercedes-Benz GLK350

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$2,079

Full coverage / month

$173

Liability only / year

$732

vs US avg

+24%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (suv-luxury)1.35x

× theft risk1.00x

× safety rating1.00x

× vehicle age0.92x

= Full coverage estimate$2079

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Mercedes-Benz GLK350 Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

10K mi

Brake fluid

24 months

Transmission fluid

40K mi

Engine coolant

150K mi

Spark plugs

60K mi

Cabin air filter

20K mi

Engine air filter

40K mi

Differential (AWD/4WD)

40K mi

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

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

4 yr / 50K mi

Hybrid/EV battery

10 yr / 155K mi

Corrosion (rust perforation)

4 yr / 50K mi

Roadside assistance

4 yr / unlimited mi

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 2014 GLK350, 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

AIR BAGS(~50K mi)

$500

FUEL SYSTEM(~50K mi)

$500

OTHER(~50K mi)

$500

BRAKES(~50K mi)

$500

BODY/STRUCTURE(~50K mi)

$500

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

🔍 Pre-Purchase Inspection Checklist

Based on 116 owner complaints for this specific year, here's what to check or ask about:

☐
AIR BAGS: TL* THE CONTACT OWNS A 2014 MERCEDES BENZ GLK350. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH THE FRONT PASSENGERS AIR BAG LIGHT ILLUMINATED INTERMITTENTLY. THE FAILURE ALSO OCCURRED WHENEVER THERE WAS NO PASSENGER IN THE FRONT SEAT. THE CONTACT WAS CONCERNED THAT THE AIR BAG COULD DEPLOY
Typically appears around 50K miles. Repair cost ~$500
☐
FUEL SYSTEM: TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ GLK350. WHILE THE CONTACT'S SPOUSE WAS DRIVING THE VEHICLE, THERE WAS AN ABNORMAL FUEL ODOR. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF SCOTTSDALE (4725 N SCOTTSDALE RD, SCOTTSDALE, AZ 85251, (480) 409-0409) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT A PL
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: LIGHT APPLICATION OF THE BRAKES RESULTED IN ABRUPT FULL STOP AND LEFT CAR IN PARK. COULD NOT GET CAR TO SHIFT OUT OF PARK EVEN WHEN APPLYING BRAKE AS INDICATED IN DASHBOARD MESSAGE. OTHER SCREEN MESSAGE INDICATED "DANGER OF ROLLING" AND DISPLAYED PICTURE OF CAR WITH AN ARROW ABOVE IT. NO OTHER WARNI
Typically appears around 50K miles. Repair cost ~$500
☐
BRAKES: WE WERE DRIVING ON THE INTERSTATE IN THE MIDDLE OF DENVER WITH CRUISE CONTROL ON WHEN THE BRAKES ENGAGED. WE WERE ALMOST AT A COMPLETE STOP WHEN MY HUSBAND WAS ABLE TO GET THE CAR TO ACCELERATE AGAIN AND WE LUCKILY WERE NOT REAR ENDED.
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)