FREE VEHICLE RESEARCH
2017 Mercedes-Benz GLC300
The 2017 Mercedes-Benz GLC300 has no open NHTSA safety recalls on file, 115 owner complaints, and gets about 24 mpg combined. Here's the full free record from NHTSA and the EPA.
SPECS
2017 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 10, 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 10, 2026. Recalls can be issued any time, confirm by VIN at nhtsa.gov before you buy.
OWNER COMPLAINTS · NHTSA
115 filed- 22
ENGINE
-The malfunctioned component is the Positive Crankcase Ventilation. - Vehicle wanted to stall and did not want to accelerate while in the middle lane on the highway with my family. - Yes it has been diagnosis by certified mechanic - The c
- 17
ELECTRICAL SYSTEM
My vehicle goes into neutral while driving which poses a major risk.
- 11
FUEL/PROPULSION SYSTEM
I smell gas in my car. There is a recall for the fuel parts on the 2019. I have a 2017 with the same issue.
- 11
UNKNOWN OR OTHER
Sunroof just exploded
- 10
AIR BAGS
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the messages "Driver’s Air Bag Malfunction - Service Required" and "Collision Prevention Assist Unavailable" were displayed. The vehicle
- 8
POWER TRAIN
The Valve body control failed. I took the car into the dealership but upon doing some searching this seems to be a common issue amongst owners of this vehicle/make model. The transmission won't go beyond 5th gear (of 9) so it's is dangero
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 10, 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 10, 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 10, 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.
-
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.
-
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 2017 Mercedes-Benz GLC300? +
No open NHTSA safety recalls are on file for the 2017 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 2017 Mercedes-Benz GLC300 get? +
The EPA rates the 2017 Mercedes-Benz GLC300 at 24 mpg combined (22 city / 28 highway), about $3,200 a year in fuel.
What do owners complain about on the 2017 Mercedes-Benz GLC300? +
Owners have filed 115 complaints with NHTSA for the 2017 Mercedes-Benz GLC300, including 5 involving a crash. The most-reported area is engine.
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