2012 Mercedes-Benz B180

The 2012 Mercedes-Benz B180 is a compact multi-purpose vehicle (MPV) known for its practicality and fuel efficiency. The B180 is equipped with a 1.6-liter turbocharged gasoline engine producing approximately 122 horsepower and 200 Nm of torque. Other engine options include the B200 (a more powerful version of the 1.6-liter turbo) and diesel variants (B180 CDI and B200 CDI). Transmission options typically include a 6-speed manual and a 7-speed dual-clutch automatic (7G-DCT). Owners often appreciate the B180 for its comfortable ride, spacious interior, and relatively good fuel economy. Common dislikes include reports of some reliability issues and higher maintenance costs compared to non-luxury brands.

Engine

1.6L Turbocharged Gasoline Engine (M270)

• Oil Leaks from Valve Cover Gasket
  • Description/Symptoms: Oil seepage around the valve cover, burning oil smell.
  • Solution: Replace the valve cover gasket.
  • Estimated Cost to Fix: $150 - $300+
  • Recalls: None Found
• Timing Chain Issues/Stretching
  • Description/Symptoms: Rattling noise on startup, especially when cold; engine misfires; fault codes related to camshaft timing.
  • Solution: Replace the timing chain, tensioner, and potentially other related components like sprockets.
  • Estimated Cost to Fix: $800 - $2000+
  • Recalls: None Found
• High Pressure Fuel Pump Failure
  • Description/Symptoms: Difficulty starting, stalling, loss of power.
  • Solution: Replace the high-pressure fuel pump.
  • Estimated Cost to Fix: $500 - $1200+
  • Recalls: None Found

Diesel Engines (OM651)

• Injector Failure
  • Description/Symptoms: Engine misfires, rough running, excessive smoke, reduced fuel economy.
  • Solution: Replace faulty injectors. May require coding injectors to the ECU.
  • Estimated Cost to Fix: $400 - $1200+ per injector
  • Recalls: None Found

Transmission

7G-DCT (7-Speed Dual-Clutch Automatic)

• Rough or Jerky Shifting
  • Description/Symptoms: Harsh shifts, hesitation between gears, especially at low speeds or during stop-and-go traffic.
  • Solution: Could be software issue, a malfunctioning valve body, or worn clutch packs. Start with a transmission software update; if that doesn’t work, the valve body may need to be replaced or the transmission rebuilt.
  • Estimated Cost to Fix: Software update $150 - $300; Valve body replacement $800 - $2000+; Transmission rebuild $3000+
  • Recalls: None Found
• Transmission Slipping
  • Description/Symptoms: Engine revs high but the vehicle doesn’t accelerate properly, especially when shifting gears.
  • Solution: Typically indicates worn clutch packs or internal damage. Requires transmission rebuild or replacement.
  • Estimated Cost to Fix: $3000+
  • Recalls: None Found

Suspension

• Worn Suspension Bushings
  • Description/Symptoms: Clunking or knocking noises, especially when going over bumps. Vague steering, uneven tire wear.
  • Solution: Replace worn bushings (control arm bushings, sway bar bushings, etc.).
  • Estimated Cost to Fix: $200 - $800+ per bushing, depending on location and labor.
  • Recalls: None Found
• Failed Shock Absorbers/Struts
  • Description/Symptoms: Bouncy ride, excessive body roll when cornering, longer stopping distances.
  • Solution: Replace worn shock absorbers/struts.
  • Estimated Cost to Fix: $300 - $1000+ per pair
  • Recalls: None Found

Electrical

• Malfunctioning Electric Parking Brake (EPB)
  • Description/Symptoms: EPB fails to engage or disengage, warning lights on the dashboard.
  • Solution: Could be a faulty EPB actuator, wiring issue, or sensor problem. Requires diagnosis and repair/replacement of the affected component.
  • Estimated Cost to Fix: $300 - $1000+
  • Recalls: None Found
• Issues with the COMAND System
  • Description/Symptoms: Screen flickering, system freezing, navigation issues, Bluetooth connectivity problems.
  • Solution: Software update, replacement of the COMAND unit if necessary.
  • Estimated Cost to Fix: Software update $100 - $300; COMAND unit replacement $800 - $2500+
  • Recalls: None Found

Exterior

• Rust on Body Panels (Especially around wheel arches and door sills)
  • Description/Symptoms: Visible rust spots on the body.
  • Solution: Sanding down the rust, filling in the affected area, and repainting.
  • Estimated Cost to Fix: $200 - $1000+ per panel, depending on severity.
  • Recalls: None Found

Interior

• Failure of Power Window Regulators
  • Description/Symptoms: Window not going up or down, grinding noises.
  • Solution: Replace the faulty window regulator.
  • Estimated Cost to Fix: $200 - $500+ per window
  • Recalls: None Found
• Airbag Warning Light
  • Description/Symptoms: Airbag warning light illuminated on the dashboard.
  • Solution: Could be a faulty sensor (seat occupancy sensor is common), wiring issue, or airbag module problem. Requires diagnosis and repair.
  • Estimated Cost to Fix: $200 - $1000+
  • Recalls: None Found

Summary

The 2012 Mercedes-Benz B180 presents a mixed bag for potential buyers. While it offers practicality and comfort, it also has some notable reliability concerns. Engine issues such as oil leaks and timing chain problems, along with transmission issues in the 7G-DCT, can lead to significant repair costs. Electrical problems and suspension wear are also common. The severity of these issues ranges from minor inconveniences to major mechanical failures, and the associated repair costs can be substantial, potentially exceeding several thousand dollars. Careful inspection and a pre-purchase inspection by a qualified mechanic are highly recommended.