2023 Mercedes-Benz GLB 250

Problems, Recalls & Reliability Report

Excellent Reliability

Quick Summary

The 2023 Mercedes-Benz GLB 250 has 13 owner complaints filed with NHTSA — that's 0.2x the segment average of 80. The most common issue is other problems (31% of all complaints), specifically: transmission switching to neutral by itself while driving on the highway. this issue has occurred twice in december 2024..

Total Complaints

Recalls Issued

—/5

Safety Stars

0.2x

vs Segment Avg

Known Problems

OTHER

4 complaints

31%

• Transmission switching to neutral by itself while driving on the highway. This issue has occurred twice in December 2024.
• Graco Turn2Me car seat is loosening over time when installed with the vehicle seatbelt and the SnugLock Lock-Off. The vehicle seat belt was also switched to a locked mode after proper installation and did not make a difference over time. The car seat continues to loosen over time to the point where
• Graco Turn2Me car seat is loosening over time when installed with the vehicle seatbelt and the SnugLock Lock-Off. The vehicle seat belt was also switched to a locked mode after proper installation and did not make a difference over time. The car seat continues to loosen over time to the point where

Typical onset: 50K miles Est. repair: $500

“Transmission switching to neutral by itself while driving on the highway. This issue has occurred twice in December 2024.”

— NHTSA complaint filing

ENGINE

4 complaints

31%

• Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair.
• On December 19, 2025, the vehicle showed lights that a sparkplug had misfired. The dealer notified me that in less than two full years of having the 2023 vehicle, it required a complete engine rebuild. This is the third major engine problem I have had with the vehicle with more than $20K in fees. Th
• My 2023 Mercedes-Benz GLB 250 is experiencing engine misfires and fault codes consistent with a known cylinder head defect that is the subject of a recall affecting 2022 and earlier models. A certified mechanic has confirmed the issue aligns with the recall defect. Despite identical symptoms and eng

Typical onset: 50K miles Est. repair: $500

“Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair.”

— NHTSA complaint filing

TRANSMISSION

2 complaints

15%

• The contact owns a 2023 Mercedes-Benz GLB250. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the transmission warning light illuminated. The vehicle was towed to the dealer but was not diagnosed or repaired. Additionally, the contact stated that whi
• My 2023 Mercedes-Benz GLB 250 is experiencing engine misfires and fault codes consistent with a known cylinder head defect that is the subject of a recall affecting 2022 and earlier models. A certified mechanic has confirmed the issue aligns with the recall defect. Despite identical symptoms and eng

Typical onset: 50K miles Est. repair: $500

“The contact owns a 2023 Mercedes-Benz GLB250. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the transmission warning light illuminated. The vehicle was towed to the dealer but was not diagnosed or repaired. Additionally, the contact stated that whi”

— NHTSA complaint filing

VISIBILITY

2 complaints

15%

• The windshield washer stopped working It doesn’t clean because no water comes out to do the job
• I was driving on Highway on May 19th and the Panoramic Sunroof suddenly shattered

Typical onset: 50K miles Est. repair: $500

“The windshield washer stopped working It doesn’t clean because no water comes out to do the job”

— NHTSA complaint filing

FUEL SYSTEM

1 complaints

• My 2023 Mercedes-Benz GLB 250 is experiencing engine misfires and fault codes consistent with a known cylinder head defect that is the subject of a recall affecting 2022 and earlier models. A certified mechanic has confirmed the issue aligns with the recall defect. Despite identical symptoms and eng

Typical onset: 50K miles Est. repair: $500

“My 2023 Mercedes-Benz GLB 250 is experiencing engine misfires and fault codes consistent with a known cylinder head defect that is the subject of a recall affecting 2022 and earlier models. A certified mechanic has confirmed the issue aligns with the recall defect. Despite identical symptoms and eng”

— NHTSA complaint filing

Estimated Repair Costs

OTHER(~50K mi)

$500

ENGINE(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

VISIBILITY(~50K mi)

$500

FUEL SYSTEM(~50K mi)

$500

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

🔍 Pre-Purchase Inspection Checklist

Based on 13 owner complaints for this specific year, here's what to check or ask about:

☐
OTHER: Transmission switching to neutral by itself while driving on the highway. This issue has occurred twice in December 2024.
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair.
Typically appears around 50K miles. Repair cost ~$500
☐
TRANSMISSION: The contact owns a 2023 Mercedes-Benz GLB250. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the transmission warning light illuminated. The vehicle was towed to the dealer but was not diagnosed or repaired. Additionally, the contact stated that whi
Typically appears around 50K miles. Repair cost ~$500
☐
VISIBILITY: The windshield washer stopped working It doesn’t clean because no water comes out to do the job
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)