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Mercedes-Benz · Known Issues

2025 Mercedes-Benz EQB Problems: 5 Known Issues

2025 model year · 2,120+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 2,120+ owner reports, the 2025 Mercedes-Benz EQB has 5 documented known issues. None of the listed issues is rated critical; this is not a complete reliability assessment. The most commonly reported issue is Real-World Range Significantly Below EPA Rating with 890 owner reports. DIY maintenance guides at au7o.io.

In This Article

  • EQB Electrical3
  • EQB HVAC1
  • EQB Brakes1
  • FAQ
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In This Article

  • Electrical3
  • HVAC1
  • Brakes1
  • FAQ

All 5 Known Issues

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ALL YEARS2025202420232022

On the 2022-2025 Mercedes-Benz EQB, a recurring EQ-family fault where AC (Level 2) charging aborts partway through or refuses to start, while DC fast charging still works normally. The Mercedes me app reports 'charging process interrupted' and the session must be restarted manually, often repeatedly. On the EQB and its siblings the root cause has been traced two ways: a dead pin in the charge port so one AC phase carries no voltage (owners measured 210V on phases 1 and 3 but 0V on phase 2, with stored codes P0EF7FA and P0EF8FA), and a failed temperature sensor on the onboard charging unit. Some cases that look like hardware turn out to be onboard-charger software and clear with an update.

Common Symptoms

  • 'Charging process interrupted' notification in Mercedes me app
  • AC charging stops early and must be restarted by hand
  • Car accepts DC fast charging but refuses AC/home charging
  • Charging never starts on a schedule/timer
  • Reduced AC charging speed (one phase missing)

How to Fix

Have the dealer read the charging module for stored codes and measure phase voltage at the inlet. Confirmed fixes reported by owners: replacement of the charge port/inlet assembly when a pin is not carrying voltage, replacement of the onboard charging unit's temperature sensor, and - in a number of cases - a charging-control software update that resolves the abort without any parts. Before booking service, rule out the EVSE and the scheduled/timed-charging setting, which has caused false 'interrupted' errors on its own.

Typical repair cost:$0 - $1,800

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026
Community reported
890 owners

On the 2022-2025 Mercedes-Benz EQB Electric, eQB owners consistently report real-world range 20-30% below the EPA-rated 243 miles, even in moderate weather. The boxy shape and higher weight of the three-row layout contribute to worse aerodynamic efficiency than the sedan-based EQ models, and highway range drops particularly steeply.

This issue also affects: Mercedes-Benz EQE SUV, Mercedes-Benz EQE, Mercedes-Benz EQS

Common Symptoms

  • Range estimate consistently 20-30% below EPA rating
  • Rapid range drop on highway
  • Energy consumption above 3.5 mi/kWh difficult to achieve
  • Range anxiety on longer trips

How to Fix

Maximize range by using Eco drive mode, limiting climate control use, and maintaining tire pressures at 42 PSI. Ensure the latest software update is installed, as Mercedes has released efficiency improvements. For highway driving, keep speeds below 70 mph to avoid steep aerodynamic losses.

Owner tips & cautions

  • TipPlan for 180-200 real miles, not the EPA 243. Keep highway speed at 65 mph or under and use Eco mode. The EQB is best suited as a commuter/suburban vehicle, not a highway cruiser.

Research This Issue

Based on 890 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence890 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
720 owners

On the 2022-2025 Mercedes-Benz EQB Electric, the MBUX infotainment system in the EQB suffers from frequent lag, unresponsive touchscreen inputs, and occasional full system crashes requiring a reboot. The issue is worse after extended use and when multiple connected services are active simultaneously.

This issue also affects: Mercedes-Benz EQE SUV, Mercedes-Benz EQE, Mercedes-Benz EQS

Common Symptoms

  • Touchscreen response delayed by 2-5 seconds
  • Navigation freezes mid-route
  • Screen goes black and reboots spontaneously
  • Voice assistant unresponsive

How to Fix

Perform a soft reboot by holding the power and volume buttons simultaneously for 10 seconds. Install all available OTA updates as Mercedes has released multiple stability fixes. Reduce the number of active connected services and disable unused features to reduce system load.

Owner tips & cautions

  • TipKeep MBUX updated — each OTA release improves stability. If the system gets sluggish, a quick reboot (hold power + volume 10 seconds) clears it up. Disable Mercedes me connect features you do not use.

Research This Issue

Based on 720 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence720 owner reportsLast reported by owners Feb 2026Reviewed Mar 2026

On the 2022-2025 Mercedes-Benz EQB, eQB owners in cold climates report that cabin heat works normally at first, then drops to ambient-temperature air after about 10-20 minutes of driving, with the blower still running and the set temperature unchanged. Shutting the car off and restarting it restores heat - until it drops out again. The same complaint runs across the EQ range. Because the EQB's heat pump circuit is shared with high-voltage battery conditioning, a refrigerant-side or control fault shows up as intermittent cabin heat rather than a hard failure. Dealers struggle with it: the fault is not stored unless the car arrives with the symptom actively present, so cars are frequently returned with 'no fault found'. Cabin/interior temperature sensors have been replaced speculatively with mixed results.

Common Symptoms

  • Heat blows warm then turns cold after ~15 minutes
  • Restarting the car restores heat temporarily
  • Blower runs but air is at ambient temperature
  • Windshield defrost ineffective in cold weather
  • Dealer reports 'no fault found'

How to Fix

Get the car to the dealer while the fault is occurring - do not shut it off en route, since a restart clears the symptom and the diagnosis with it. Ask for the heat pump / thermal management control software to be brought current first; several cases resolved with software alone. Beyond that, documented repairs include replacement of the cabin temperature sensor and inspection of the heat-pump refrigerant circuit and its valves. Note that in very cold weather some heat reduction is normal heat-pump behavior as the system diverts capacity to battery conditioning; the fault case is heat that goes fully cold and stays cold until a key cycle.

Typical repair cost:$0 - $1,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Low ConfidenceVerifiedReviewed Aug 2026
Community reported
510 owners

On the 2022-2025 Mercedes-Benz EQB Electric, the EQB exhibits inconsistent brake pedal feel as the system blends regenerative and friction braking. At low speeds and low battery state of charge, the transition between regen and friction braking creates a noticeable "dead zone" or sudden grab in the pedal, making smooth stops difficult.

This issue also affects: Mercedes-Benz EQE SUV, Mercedes-Benz EQE, Mercedes-Benz EQS

Common Symptoms

  • Brake pedal feels spongy then suddenly grabs
  • Inconsistent braking force at low speeds
  • Jerky stops in parking lots
  • Brake pedal feel changes based on battery level

How to Fix

A software update from Mercedes recalibrates the brake blending algorithm for smoother transitions. Ensure the latest OTA update is installed. Drivers can also use the steering wheel paddles to control regen intensity manually, bypassing the blended braking issue.

Owner tips & cautions

  • TipUse the paddle shifters to set regen to D- or D-- for more predictable deceleration. The auto-regen mode (D Auto) is where most of the inconsistent pedal feel occurs.

Research This Issue

Based on 510 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence510 owner reportsLast reported by owners Jan 2026Reviewed Mar 2026
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Frequently Asked Questions

What are the most common Mercedes-Benz EQB problems?

According to Au7o's analysis of 2,120+ owner reports, the 2025 Mercedes-Benz EQB has 5 documented issues. The most frequently reported are: Heat Pump / Cabin Heating Cuts to Cold Air After Roughly 15 Minutes, AC Onboard Charger / Charge Port Phase Failure - 'Charging Process Interrupted', Real-World Range Significantly Below EPA Rating. None are rated critical, but regular maintenance is recommended.

Is the Mercedes-Benz EQB reliable?

The 2025 Mercedes-Benz EQB has 5 known issues documented across 2,120+ owner reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mercedes-Benz EQB problems?

Repair costs for known Mercedes-Benz EQB issues range from $0 to $1,800, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2022-2025 Mercedes-Benz EQB Heat Pump / Cabin Heating Cuts to Cold Air After Roughly 15 Minutes?

EQB owners in cold climates report that cabin heat works normally at first, then drops to ambient-temperature air after about 10-20 minutes of driving, with the blower still running and the set temperature unchanged. Shutting the car off and restarting it restores heat - until it… Repairs typically run $0-$1,500. Severity: medium.

What is the 2022-2025 Mercedes-Benz EQB AC Onboard Charger / Charge Port Phase Failure - 'Charging Process Interrupted'?

A recurring EQ-family fault where AC (Level 2) charging aborts partway through or refuses to start, while DC fast charging still works normally. The Mercedes me app reports 'charging process interrupted' and the session must be restarted manually, often repeatedly. On the EQB and… Repairs typically run $0-$1,800. Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 2,120+ owner reports, NHTSA recalls, TSBs, and automotive forums.

What is the 2022-2025 Mercedes-Benz EQB Real-World Range Significantly Below EPA Rating?

EQB owners consistently report real-world range 20-30% below the EPA-rated 243 miles, even in moderate weather. The boxy shape and higher weight of the three-row layout contribute to worse aerodynamic efficiency than the sedan-based EQ models, and highway range drops particularly… Severity: low.

What is the 2022-2025 Mercedes-Benz EQB Infotainment System Lag and Crashes?

The MBUX infotainment system in the EQB suffers from frequent lag, unresponsive touchscreen inputs, and occasional full system crashes requiring a reboot. The issue is worse after extended use and when multiple connected services are active simultaneously. Severity: low.

What is the 2022-2025 Mercedes-Benz EQB Brake Pedal Feel Inconsistency with Regenerative Braking?

The EQB exhibits inconsistent brake pedal feel as the system blends regenerative and friction braking. At low speeds and low battery state of charge, the transition between regen and friction braking creates a noticeable "dead zone" or sudden grab in the pedal, making smooth stop… Severity: low.