2021 Mercedes-Benz Sprinter 3500

The 2021 Mercedes-Benz Sprinter 3500 is a popular commercial van known for its versatility and customization options. It’s often praised for its spacious interior, comfortable ride, and available technology. However, some owners have reported issues, which can vary depending on the configuration. Engine options include a 2.0L I4 Turbocharged gasoline engine producing 188 horsepower and 258 lb-ft of torque, and a 3.0L V6 Turbocharged diesel engine producing 188 horsepower and 325 lb-ft of torque. Both engine options are paired with a 9-speed automatic transmission. While the Sprinter offers a range of configurations to suit various needs, some common complaints include electrical glitches, issues with the emissions system in diesel models, and problems with the sliding door mechanism. Some drivers like that there are so many ways to customize the vehicle to suit their needs. Some drivers don’t like the cost of maintenance on the vehicle.

Category: Engine

3.0L V6 Turbo Diesel

• Diesel Exhaust Fluid (DEF) System Issues
  • Description/Symptoms: Malfunction Indicator Lamp (MIL) illuminated, diagnostic trouble codes (DTCs) related to DEF system (e.g., P20EE, P204F), “Check Engine” light, and potential limp mode due to DEF quality or injector issues.
  • Solution: Diagnosis of the specific DEF system component failure (level sensor, pump, injector, etc.). Replacement of the faulty component. Software updates may also be required.
  • Estimated Cost to Fix: $200 - $2,000+ depending on the failed part.
  • Recalls: None Found
• EGR Valve Failure
  • Description/Symptoms: Rough idling, reduced engine performance, “Check Engine” light, diagnostic trouble codes related to EGR valve (e.g., P0401, P0402).
  • Solution: Replacement of the EGR valve. Cleaning of the EGR cooler and related components may also be necessary.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

2.0L I4 Turbocharged Gasoline

• Oil Leaks
  • Description/Symptoms: Oil puddles under the vehicle, burning oil smell, low oil level, visible oil leaks on engine components (valve cover gasket, oil pan gasket, etc.).
  • Solution: Identification and repair of the oil leak source. Replacement of the affected gasket or seal.
  • Estimated Cost to Fix: $100 - $1,000+ depending on the location and severity of the leak.
  • Recalls: None Found

Category: Transmission

9-Speed Automatic Transmission (Both Engines)

• Harsh Shifting/Jerking
  • Description/Symptoms: Noticeable jerking or harsh shifts between gears, particularly during acceleration or deceleration.
  • Solution: Software update to the transmission control module (TCM). In some cases, valve body replacement or complete transmission replacement may be required.
  • Estimated Cost to Fix: $150 - $6,000+ depending on the severity and required repair.
  • Recalls: None Found
• Transmission Slipping
  • Description/Symptoms: Engine RPM increases without a corresponding increase in vehicle speed, delayed engagement of gears.
  • Solution: Diagnose transmission fluid level, potential valve body replacement, or complete transmission replacement if internal damage is present.
  • Estimated Cost to Fix: $300 - $6,000+ depending on the severity and required repair.
  • Recalls: None Found

Category: Suspension

• Rear Suspension Sagging (Especially with Heavy Loads)
  • Description/Symptoms: Noticeable sagging of the rear suspension, particularly when the vehicle is loaded. Reduced ride height in the rear.
  • Solution: Upgrade to heavy-duty rear springs or install auxiliary air suspension.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Category: Electrical

• Sensor Failures
  • Description/Symptoms: Various warning lights illuminated, including ABS, traction control, and TPMS. Diagnostic trouble codes indicating sensor malfunctions.
  • Solution: Diagnosis to identify the faulty sensor (wheel speed sensor, ABS sensor, tire pressure sensor, etc.). Replacement of the sensor.
  • Estimated Cost to Fix: $100 - $500+ per sensor.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Vehicle battery drains overnight or within a few days of non-use. Difficulty starting the vehicle.
  • Solution: Diagnosis to identify the parasitic drain (faulty module, wiring issue, etc.). Repair or replacement of the faulty component.
  • Estimated Cost to Fix: $100 - $1,000+
  • Recalls: None Found

Category: Exterior

• Sliding Door Issues
  • Description/Symptoms: Difficulty opening or closing the sliding door. The door may stick, bind, or require excessive force to operate.
  • Solution: Lubrication of the door tracks and rollers. Adjustment of the door alignment. Replacement of worn or damaged rollers or actuators.
  • Estimated Cost to Fix: $50 - $1,000+ depending on the issue.
  • Recalls: None Found

Category: Interior

• HVAC Malfunctions
  • Description/Symptoms: Inconsistent airflow, failure to blow hot or cold air, unusual noises from the HVAC system.
  • Solution: Diagnosis to identify the faulty component (blower motor, blend door actuator, compressor, etc.). Replacement of the component.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Summary

The 2021 Mercedes-Benz Sprinter 3500 has some common issues, with the diesel models being more prone to emissions system problems and the transmission having potential harsh shifting. Electrical glitches and sliding door malfunctions are also concerns. The severity of these issues can range from minor inconveniences to major repairs, with costs varying widely depending on the specific problem. It’s a good idea to check maintenance and repair records when buying a used Sprinter 3500.