Is the 2023 Mercedes-Benz GLC 300 reliable?

The 2023 Mercedes-Benz GLC 300 has 99 complaints filed with NHTSA (1.2x the segment average). Our reliability verdict: below-average. Most common issue: ELECTRICAL problems.

What are common problems with the 2023 Mercedes-Benz GLC 300?

Top problems: ELECTRICAL (30 complaints, avg repair $500); ENGINE (15 complaints, avg repair $500); DRIVER ASSIST/CAMERAS (14 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2023 Mercedes-Benz GLC 300?

Yes, there are 9 recall(s): FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP, FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP, STRUCTURE:INTERIOR PANELS:DASHBOARD, SEATS:CRITICAL FASTENERS, ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS, ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS, EXTERIOR LIGHTING:HEADLIGHTS, STRUCTURE:BODY:ROOF AND PILLARS, STEERING:CRITICAL FASTENERS. Contact any Mercedes-Benz dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2023 Mercedes-Benz GLC 300?

The 2023 Mercedes-Benz GLC 300 gets 28 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $1714. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2023 Mercedes-Benz GLC 300?

Estimated US average full-coverage insurance for the 2023 Mercedes-Benz GLC 300 is approximately $2,373/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.

2023 Mercedes-Benz GLC 300

Problems, Recalls & Reliability Report

Below Average

Quick Summary

The 2023 Mercedes-Benz GLC 300 has 99 owner complaints filed with NHTSA — that's 1.2x the segment average of 84. The most common issue is electrical problems (30% of all complaints), specifically: when starting the vehicle, all the lights and alarms have come on and vehicle is not drivable. this has happened 4 times. 3/4 times the vehicle has started after an hour or two. one time i have had to have it towed in. i bought this car on april 27th. first time this happened was 5/29. i have been w. There are 9 recalls issued for this model year.

3 crash reports 4 injuries

Total Complaints

Recalls Issued

—/5

Safety Stars

1.2x

vs Segment Avg

Known Problems(top 5 of 8)

ELECTRICAL

30 complaints

30%

• When starting the vehicle, all the lights and alarms have come on and vehicle is not drivable. This has happened 4 times. 3/4 times the vehicle has started after an hour or two. One time I have had to have it towed in. I bought this car on April 27th. First time this happened was 5/29. I have been w
• Sunday, June 25, when I was driving the car on the road, the engine shut off and the car stopped running. 3 warning lights show on screen: engine light; 48v Battery Service Required; 12v Battery service required. I used the break to park the car on the roadside after that. I tried many times to res
• Petition: Consumer requests a focused review of the ISG 48-volt onboard electrical system used in various Mercedes-Benz vehicles and the expansion or initiation of a new recall to include 2023 300GLC vehicles.

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

“When starting the vehicle, all the lights and alarms have come on and vehicle is not drivable. This has happened 4 times. 3/4 times the vehicle has started after an hour or two. One time I have had to have it towed in. I bought this car on April 27th. First time this happened was 5/29. I have been w”

— NHTSA complaint filing

Recalls (9)

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP26/06/2023

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.

Risk: A loss of drive power can increase the risk of a crash.

Fix: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.

Fuel Cost Calculator for 2023 Mercedes-Benz GLC 300

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$1,715

Per month

$143

Per mile

14.3¢

MPG

City driving (worst-case MPG)

$1,920/yr

Highway driving (best-case MPG)

$1,500/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 2023 Mercedes-Benz GLC 300

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

$2,373

Full coverage / month

$198

Liability only / year

$732

vs US avg

+42%

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 age1.05x

= Full coverage estimate$2373

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

Maintenance & Warranty

Recommended Mercedes-Benz GLC 300 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

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

DRIVER ASSIST/CAMERAS(~50K mi)

$500

LIGHTING(~50K mi)

$500

OTHER(~50K mi)

$500

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

🔍 Pre-Purchase Inspection Checklist

Based on 99 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: When starting the vehicle, all the lights and alarms have come on and vehicle is not drivable. This has happened 4 times. 3/4 times the vehicle has started after an hour or two. One time I have had to have it towed in. I bought this car on April 27th. First time this happened was 5/29. I have been w
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: Sunday, June 25, when I was driving the car on the road, the engine shut off and the car stopped running. 3 warning lights show on screen: engine light; 48v Battery Service Required; 12v Battery service required. I used the break to park the car on the roadside after that. I tried many times to res
Typically appears around 50K miles. Repair cost ~$500
☐
DRIVER ASSIST/CAMERAS: The moon roof will not close. There is also a sloshing sound of water in an unidentified area, it has not rained. The blind spot monitor function of the digital light projection works intermittently and is barely visible marking on the roadway. The exit assist also does not activate the ambient l
Typically appears around 50K miles. Repair cost ~$500
☐
LIGHTING: Sunday, June 25, when I was driving the car on the road, the engine shut off and the car stopped running. 3 warning lights show on screen: engine light; 48v Battery Service Required; 12v Battery service required. I used the break to park the car on the roadside after that. I tried many times to res
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 9 recalls have been completed — free at any Mercedes-Benz dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)