FREE VEHICLE RESEARCH
2018 Mercedes-Benz GLC300
The 2018 Mercedes-Benz GLC300 has no open NHTSA safety recalls on file, 98 owner complaints, and gets about 24 mpg combined. Here's the full free record from NHTSA and the EPA.
SPECS
2018 Mercedes-Benz GLC300 at a glance
- Engine
- 4-cyl 2L
- Cylinders
- 4
- Displacement
- 2 L
- Drivetrain
- Rear-Wheel Drive
- Transmission
- Automatic 9-spd
- Body
- Small Sport Utility Vehicle 2WD
- Fuel
- Premium
Source: EPA / NHTSA vPIC, as of July 11, 2026.
SAFETY RECALLS · NHTSA
No safety recalls on file with NHTSA for this year and model. That's a good sign.
NHTSA has opened one or more investigations covering this model. Recalls can follow an investigation, so check NHTSA for the latest before you buy.
Open safety recalls are free to fix at any franchised dealer. What recalls mean → Source: NHTSA recalls, as of July 11, 2026. Recalls can be issued any time, confirm by VIN at nhtsa.gov before you buy.
OWNER COMPLAINTS · NHTSA
98 filed- 18
UNKNOWN OR OTHER
I have P052E71 error code. It’s a crankcase ventilation malfunction. Seems to be a common issue reported widely online on various forums. Mercedes should place a recall on this. The car has 55k miles on it.
- 18
ENGINE
I have engine light on and when I scanned it, I got a error code P052E For crankcase vent valve issues. It is most common problem with Mercedes-Benz Glc .
- 14
ELECTRICAL SYSTEM
Safety Issue: Infotainment display screen produces scrambled pixels during Apple CarPlay navigation while driving. Description: When Apple CarPlay is connected and navigation is in use, the vehicle's infotainment display screen suddenly pr
- 10
POWER TRAIN
Component Failure: The vehicle is equipped with the M274 2.0L turbocharged engine, which suffered a major internal mechanical defect. An authorized Mercedes-Benz dealership diagnosed the vehicle at 79,504 miles with a malfunction in the cra
- 8
STRUCTURE
While driving on interstate 4 in Florida with our grandchildren going approximately 70 mph the sunroof on our 2018 Mercedes GLC just exploded no object came into the vehicle and while glass came into the vehiclenot all the glass that made u
- 7
SEAT BELTS
The contact owns a 2018 Mercedes-Benz GLC300. The contact stated that when the driver's side seat belt was buckled, the seat belt alarm chimed as if the seat belt was not buckled. The contact had to buckle and unbuckle the seat belt several
Problems owners reported to the government, useful for spotting patterns, not proof any one car has them. What complaints mean → Source: NHTSA complaints, as of July 11, 2026. Owner-submitted reports, not verified diagnoses.
CRASH-TEST RATINGS · NHTSA NCAP
- Overall
- ★★★★★
- Frontal
- ★★★★★
- Side
- ★★★★★
- Rollover
- ★★★★☆
Government crash tests of this model; not every trim or year is tested. Source: NHTSA NCAP, as of July 11, 2026.
FUEL & RUNNING COST · U.S. EPA
- Combined
- 24 mpg
- City / Hwy
- 22 / 28
- Est. fuel / yr
- $3,200
- CO₂ / mi
- 364 g
EPA lab estimates; real mpg varies by how you drive. Source: EPA fueleconomy.gov, as of July 11, 2026. Annual cost assumes 15,000 mi/yr at EPA's reference price.
All figures above come from free U.S. government sources: NHTSA (recalls, complaints, investigations, crash tests) and the EPA (fuel economy and specs). We don't show market price, insurance cost, or proprietary reliability scores, because there's no free, reliable public source for them. For a verdict on a specific listing, with a fair-offer number and what to ask the seller, that's the VINly app.
BEFORE YOU BUY
What to check on this car
Watch for a pending investigation
NHTSA has an open investigation covering this model. A recall can follow an investigation, so check nhtsa.gov for the latest before you commit.
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Test-drive the basics
Cold start, full-lock steering both ways, firm brakes with no pulsing, smooth shifts, and every electronic feature. Warning lights should come on at key-on, then go out.
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Check the title and the VIN
Confirm the title status in hand matches the listing, and that the VIN matches across the dash, door jamb, and title. VINly does not show ownership or accident history, for that, run a paid report like Carfax.
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Ask the seller the right questions
Why they are selling, any service records, accident or panel-repaint history, how many owners, and whether any open recalls were completed.
See the full used-car inspection checklist. None of this replaces a hands-on inspection by a mechanic.
Quick answers
Are there any recalls on the 2018 Mercedes-Benz GLC300? +
No open NHTSA safety recalls are on file for the 2018 Mercedes-Benz GLC300. Recalls can be issued at any time, so confirm with the VIN at nhtsa.gov before you buy.
What gas mileage does the 2018 Mercedes-Benz GLC300 get? +
The EPA rates the 2018 Mercedes-Benz GLC300 at 24 mpg combined (22 city / 28 highway), about $3,200 a year in fuel.
How safe is the 2018 Mercedes-Benz GLC300? +
NHTSA's NCAP program gives the 2018 Mercedes-Benz GLC300 5 out of 5 stars overall, with 4 stars for rollover resistance.
What do owners complain about on the 2018 Mercedes-Benz GLC300? +
Owners have filed 98 complaints with NHTSA for the 2018 Mercedes-Benz GLC300, including 5 involving a crash. The most-reported area is unknown or other.
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