2022 Mercedes-Benz EQB 300

The 2022 Mercedes-Benz EQB 300 is an all-electric compact SUV offering a blend of luxury and practicality. The EQB 300 4MATIC features a dual-motor all-wheel-drive system producing 225 horsepower and 288 lb-ft of torque. While praised for its comfortable ride, spacious interior (especially for a compact SUV), and available third-row seating, some owners have noted concerns regarding range limitations compared to competitors, software glitches, and occasional build quality issues. Other engine options include the EQB 250+ and EQB 350 4MATIC. A single speed transmission is used for all EQB configurations.

Electric Motor

Dual Motor (EQB 300 4MATIC)

• Reduced Range/Energy Consumption Higher Than Expected
  • Description/Symptoms: Owners report experiencing lower real-world range than the advertised EPA estimates, particularly in colder weather or during highway driving. Energy consumption (MPGe) is also sometimes higher than expected.
  • Solution: Driving habits and conditions significantly affect range. Owners are advised to optimize driving style (smooth acceleration, minimizing hard braking) and pre-condition the battery before departure in cold weather. Software updates from Mercedes-Benz may also improve energy management.
  • Estimated Cost to Fix: Varies, diagnosis usually free. Software updates are typically covered under warranty.
  • Recalls: None Found
• Battery Management System (BMS) Issues
  • Description/Symptoms: Some owners report instances of the BMS incorrectly displaying the state of charge, leading to unexpected range depletion or premature charging cut-offs.
  • Solution: Dealer diagnosis of the BMS and potentially a software update or, in rare cases, battery module replacement under warranty.
  • Estimated Cost to Fix: Diagnostic charges may apply outside of the warranty period. Battery module replacement, if necessary, is a substantial expense but should be covered under warranty if the issue is related to a defect.
  • Recalls: None Found

Single Speed Transmission No Issues Found

Suspension

• Noises/Clunking Sounds
  • Description/Symptoms: Owners report hearing clunking or rattling noises from the suspension, particularly when driving over bumps or uneven surfaces.
  • Solution: Inspection of the suspension components, including the struts, springs, sway bar links, and bushings. Replacement of worn or damaged parts.
  • Estimated Cost to Fix: $100 - $500+, depending on the specific parts needing replacement.
  • Recalls: None Found

Electrical

• MBUX Infotainment System Glitches/Freezing
  • Description/Symptoms: The Mercedes-Benz User Experience (MBUX) system can experience occasional freezing, lagging, or unexpected reboots. Wireless Apple Carplay/Android Auto connectivity issues are also reported.
  • Solution: Performing a system reset or waiting for software updates from Mercedes-Benz. Some owners have had success by unpairing and re-pairing their phones or updating their phone’s operating system.
  • Estimated Cost to Fix: Typically resolved with software updates, covered under warranty.
  • Recalls: None Found
• 12V Battery Drain
  • Description/Symptoms: The 12V auxiliary battery can drain prematurely, leading to starting problems or electrical system malfunctions. This may be related to software issues or accessory drain.
  • Solution: Dealer inspection to identify the source of the drain. Software updates, battery replacement, or repair of faulty accessories.
  • Estimated Cost to Fix: $150 - $300+ for battery replacement. Diagnostic and repair costs vary depending on the cause.
  • Recalls: None Found
• Charging Port Door Malfunctions
  • Description/Symptoms: Difficulties opening or closing the charging port door.
  • Solution: Examination of the door mechanism, lubrication or replacement if needed.
  • Estimated Cost to Fix: $100 - $300+.
  • Recalls: None Found

Exterior

• Poorly Aligned Body Panels
  • Description/Symptoms: Some owners have noticed inconsistent gaps or misalignment of body panels (hood, doors, trunk) during initial delivery.
  • Solution: Adjustment of the body panels by the dealership.
  • Estimated Cost to Fix: Should be covered under warranty if identified shortly after purchase.
  • Recalls: None Found
• Water Leaks (trunk/hatch area)
  • Description/Symptoms: Water intrusion into the trunk/hatch area, usually traced to a faulty seal or improperly installed weather stripping.
  • Solution: Identify the source of the leak and replace the damaged seal or weather stripping.
  • Estimated Cost to Fix: $100 - $400+, depending on the location and extent of the damage.
  • Recalls: None Found

Interior

• Rattling Noises from Dashboard/Trim
  • Description/Symptoms: Annoying rattling or buzzing noises emanating from the dashboard, door panels, or other interior trim pieces.
  • Solution: Locating the source of the rattle and securing the affected trim piece or applying sound-deadening material.
  • Estimated Cost to Fix: Can range from DIY fixes to dealer repairs costing $50-$200+, depending on complexity.
  • Recalls: None Found
• Seat Motor Issues (adjustment)
  • Description/Symptoms: Issues with seat motor and seat not being able to adjust properly, or making noises while adjusting.
  • Solution: Repair or replace the affected motor.
  • Estimated Cost to Fix: $200 - $500+.
  • Recalls: None Found

Summary The 2022 Mercedes-Benz EQB 300 experiences a variety of issues ranging from minor electrical glitches and interior rattles to more significant concerns like reduced range and potential BMS issues. Exterior alignment problems and water leaks have also been reported. The severity of these issues varies, with most being addressable through software updates, adjustments, or component replacements. However, battery-related concerns could lead to more costly repairs if not covered under warranty. It is important to have a mechanic familiar with electric vehicles diagnose the issue to avoid unnecessary costs.