Is the 2012 Mercedes-Benz GLK350 reliable?

The 2012 Mercedes-Benz GLK350 has 188 complaints filed with NHTSA (1.2x the segment average). Our reliability verdict: below-average. Most common issue: AIR BAGS problems.

What are common problems with the 2012 Mercedes-Benz GLK350?

Top problems: AIR BAGS (134 complaints, avg repair $500); FUEL SYSTEM (13 complaints, avg repair $500); OTHER (7 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2012 Mercedes-Benz GLK350?

No recalls have been issued for the 2012 Mercedes-Benz GLK350.

How much does it cost to fuel a 2012 Mercedes-Benz GLK350?

The 2012 Mercedes-Benz GLK350 gets 18 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2667. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2012 Mercedes-Benz GLK350?

Estimated US average full-coverage insurance for the 2012 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.

2012 Mercedes-Benz GLK350

Problems, Recalls & Reliability Report

Below Average

Quick Summary

The 2012 Mercedes-Benz GLK350 has 188 owner complaints filed with NHTSA — that's 1.2x the segment average of 159. The most common issue is air bags problems (71% of all complaints), specifically: after just parking the vehicle but before getting out - the drivers headrest "exploded" and pushed my head toward the steering wheel. when driving the vehicle home the message center said problem with the driver front airbag and the passenger front airbag and the warning light was on. the next day.

6 crash reports 3 injuries

188

Total Complaints

Recalls Issued

—/5

Safety Stars

1.2x

vs Segment Avg

Known Problems(top 5 of 8)

AIR BAGS

134 complaints

71%

• AFTER JUST PARKING THE VEHICLE BUT BEFORE GETTING OUT - THE DRIVERS HEADREST "EXPLODED" AND PUSHED MY HEAD TOWARD THE STEERING WHEEL. WHEN DRIVING THE VEHICLE HOME THE MESSAGE CENTER SAID PROBLEM WITH THE DRIVER FRONT AIRBAG AND THE PASSENGER FRONT AIRBAG AND THE WARNING LIGHT WAS ON. THE NEXT DAY
• TL* TAKATA RECALL. THE CONTACT OWNS A 2012 MERCEDES-BENZ GLK350. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V081000 (AIR BAGS); HOWEVER, THE PART NEEDED TO PERFORM THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE REC
• THIS VEHICLE HAD AN AIR BAG RECALL SOME TIME AGO. IN APPROXIMATELY EARLY MAY 2016 WE CALLED AND THE DEALER SAID THAT THE MANUFACTURER HAD NOT YET SUPPLIED IT WITH ANY REPLACEMENT AIR BAGS. THE DEALER SAID THAT A NEW RECALL NOTICE WOULD BE SENT OUT WHEN THE AIRBAGS WERE IN STOCK. NO NEW NOTICE HAS AS

Typical onset: 50K miles Est. repair: $500💥 2 crashes

“AFTER JUST PARKING THE VEHICLE BUT BEFORE GETTING OUT - THE DRIVERS HEADREST "EXPLODED" AND PUSHED MY HEAD TOWARD THE STEERING WHEEL. WHEN DRIVING THE VEHICLE HOME THE MESSAGE CENTER SAID PROBLEM WITH THE DRIVER FRONT AIRBAG AND THE PASSENGER FRONT AIRBAG AND THE WARNING LIGHT WAS ON. THE NEXT DAY”

— NHTSA complaint filing

When Problems Appear on the 2012 Mercedes-Benz GLK350

Based on 27 owner complaints that included an odometer reading. Median mileage at time of complaint: 41K miles. Most complaints cluster in the 30-60K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

AIR BAGS

In line with typicalmedian 47K mi · 11 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 2012 Mercedes-Benz GLK350

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,667

Per month

$222

Per mile

22.2¢

MPG

City driving (worst-case MPG)

$3,001/yr

Highway driving (best-case MPG)

$2,182/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 2012 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 2012 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

SEATS/RESTRAINTS(~50K mi)

$500

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

🔍 Pre-Purchase Inspection Checklist

Based on 188 owner complaints for this specific year, here's what to check or ask about:

☐
AIR BAGS: AFTER JUST PARKING THE VEHICLE BUT BEFORE GETTING OUT - THE DRIVERS HEADREST "EXPLODED" AND PUSHED MY HEAD TOWARD THE STEERING WHEEL. WHEN DRIVING THE VEHICLE HOME THE MESSAGE CENTER SAID PROBLEM WITH THE DRIVER FRONT AIRBAG AND THE PASSENGER FRONT AIRBAG AND THE WARNING LIGHT WAS ON. THE NEXT DAY
Typically appears around 50K miles. Repair cost ~$500
☐
FUEL SYSTEM: EVERYTIME I FILL UP THE TANK, IT SMELLS GAS IN THE GARAGE AFTER IT STAYS OVERNIGHT. I DO NOT OVERFILL THE TANK. BUT, THIS STILL PERSISTS. MANY MB OWNERS I HAVE SEEN ON THE MB BLOGS AND INQUIRIES ABOUT THIS HAVE THE SAME ISSUE. THIS IS A POTENTIAL SAFETY HAZARD ISSUE THAT REQUIRES IMMEDIATE SAFTE
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: AFTER JUST PARKING THE VEHICLE BUT BEFORE GETTING OUT - THE DRIVERS HEADREST "EXPLODED" AND PUSHED MY HEAD TOWARD THE STEERING WHEEL. WHEN DRIVING THE VEHICLE HOME THE MESSAGE CENTER SAID PROBLEM WITH THE DRIVER FRONT AIRBAG AND THE PASSENGER FRONT AIRBAG AND THE WARNING LIGHT WAS ON. THE NEXT DAY
Typically appears around 50K miles. Repair cost ~$500
☐
BRAKES: WHILE PARKING MY CAR IN A GARAGE, IT ACCELERATED. UPON APPLYING THE BRAKES, IT SPEEDED UP CAUSING ME TO CRASH INTO A CONCRETE BARRIER. AIR BAG DID NOT DEPLOY.
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)