2021 Mercedes-Benz OF 1118

Introduction to the 2021 Mercedes-Benz OF 1118

The 2021 Mercedes-Benz OF 1118 is a medium-duty truck that is available with a variety of engine and transmission options: a 7.2L OM 936 Inline-6 Diesel with 238 horsepower and 770 lb-ft of torque, a 4.25L OM 934 Inline-6 Diesel with 188 horsepower and 480 lb-ft of torque, and a 6.37L OM 936 Inline-6 Diesel 286 horsepower and 811 lb-ft of torque. All versions come with a 6-speed manual transmission. People like the OF 1118 for its powerful engines, comfortable ride, and spacious cabin. However, some owners have reported issues with certain components.

Engine

7.2L OM 936 Inline-6 Diesel

• Turbocharger Failure
  • Description/Symptoms: Loss of power, black smoke from exhaust, excessive oil consumption
  • Solution: Replace turbocharger
  • Estimated Cost to Fix: $3,000 - $5,000+
  • Recalls: None Found

4.25L OM 934 Inline-6 Diesel

• Intake Valve Deposits
  • Description/Symptoms: Reduced engine performance, rough idle, increased fuel consumption
  • Solution: Clean or replace intake valves
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

6.37L OM 936 Inline-6 Diesel

• EGR Valve Failure
  • Description/Symptoms: Reduced engine performance, increased emissions, check engine light
  • Solution: Replace EGR valve
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found

Transmission

6-Speed Manual Transmission

• Clutch Failure
  • Description/Symptoms: Difficulty shifting gears, slipping clutch, burning smell
  • Solution: Replace clutch
  • Estimated Cost to Fix: $1,200 - $2,000+
  • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Alternator Failure
  • Description/Symptoms: Dimming headlights, dead battery, electrical system malfunctions
  • Solution: Replace alternator
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• HVAC Blower Motor Failure
  • Description/Symptoms: No air flow from vents, excessive noise from blower motor
  • Solution: Replace blower motor
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Summary

Overall, the 2021 Mercedes-Benz OF 1118 is a reliable truck with a few common issues. The most severe and costly issues are turbocharger failure and clutch failure, which can both exceed $3,000 to repair. However, most other issues are relatively minor and inexpensive to fix. Owners should be aware of these potential issues before purchasing this vehicle, but they should not be a major deterrent.