2014 BMW 335i xDrive

The 2014 BMW 335i xDrive is a popular luxury sports sedan known for its blend of performance, comfort, and all-weather capability thanks to the xDrive all-wheel-drive system. The most common engine option is the 3.0L N55 turbocharged inline-six, producing 300 horsepower and 300 lb-ft of torque. Other engine options for the 2014 3 Series lineup include the 2.0L N20 turbocharged inline-four (328i) and the 2.0L B46 turbocharged inline-four (320i). Transmission options include a 6-speed manual and an 8-speed automatic. Owners often praise the 335i’s responsive engine, sharp handling, and comfortable interior. Common criticisms include the high cost of maintenance, potential for expensive repairs, and the run-flat tires, which can provide a harsh ride.

Engine

3.0L N55 Turbocharged Inline-Six (335i xDrive)

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak from the oil filter housing, often dripping onto the exhaust manifold, causing a burning smell. Visible oil residue around the oil filter housing.
  • Solution: Replacement of the oil filter housing gasket.
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found
• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leak from the valve cover, often dripping onto the exhaust manifold, causing a burning smell. Visible oil residue around the valve cover.
  • Solution: Replacement of the valve cover gasket.
  • Estimated Cost to Fix: $400 - $700
  • Recalls: None Found
• VANOS Solenoid Issues
  • Description/Symptoms: Rough idle, reduced power, and potential check engine light with VANOS-related codes.
  • Solution: Replacement of faulty VANOS solenoids.
  • Estimated Cost to Fix: $200 - $400 per solenoid
  • Recalls: None Found
• Water Pump Failure
  • Description/Symptoms: Overheating, coolant loss, and potential check engine light.
  • Solution: Replacement of the electric water pump.
  • Estimated Cost to Fix: $600 - $1000
  • Recalls: None Found

Transmission

8-Speed Automatic (All Models)

• Mechatronic Unit Failure
  • Description/Symptoms: Harsh shifting, slipping, delayed engagement, and potential transmission malfunction warning.
  • Solution: Replacement or rebuild of the mechatronic unit.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• Transmission Oil Pan/Filter Leak
  • Description/Symptoms: Transmission fluid leak, often visible under the car. Can lead to slipping and transmission damage if fluid level gets too low.
  • Solution: Replacement of the transmission oil pan/filter assembly (often integrated).
  • Estimated Cost to Fix: $500 - $800
  • Recalls: None Found

Suspension

• Control Arm Bushing Failure
  • Description/Symptoms: Clunking noises from the front suspension, especially over bumps. Worn bushings can affect handling and tire wear.
  • Solution: Replacement of the control arm bushings or entire control arm assembly.
  • Estimated Cost to Fix: $300 - $600 per side
  • Recalls: None Found
• Rear Shock Absorber Leaks
  • Description/Symptoms: Decreased ride quality, bouncy feeling, and visible oil leaks from the rear shock absorbers.
  • Solution: Replacement of the rear shock absorbers.
  • Estimated Cost to Fix: $400 - $800 per pair
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Car fails to start, especially after sitting for a period of time. Various electrical systems may malfunction or display error messages.
  • Solution: Diagnosis and repair of parasitic drain, which may involve replacing the battery, faulty modules, or wiring.
  • Estimated Cost to Fix: $200 - $1000+ (depending on the cause)
  • Recalls: None Found
• Faulty Comfort Access System
  • Description/Symptoms: Keyless entry and start malfunctions, requiring manual key use. Can be intermittent.
  • Solution: Diagnosis and repair of faulty door handles, key fobs, or related control modules.
  • Estimated Cost to Fix: $300 - $800+ per handle or module
  • Recalls: None Found

Exterior

• Cracked Plastic Trim
  • Description/Symptoms: Window trim, bumper trim and other plastic trim pieces become brittle and crack.
  • Solution: Replacement of the trim piece
  • Estimated Cost to Fix: $50 - $300+
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof may not open or close properly, make excessive noise, or leak.
  • Solution: Repair or replacement of the sunroof motor, track, or seals.
  • Estimated Cost to Fix: $300 - $1000+
  • Recalls: None Found
• iDrive Controller Failure
  • Description/Symptoms: iDrive controller becomes unresponsive or erratic, making it difficult to navigate the infotainment system.
  • Solution: Replacement of the iDrive controller.
  • Estimated Cost to Fix: $400 - $800
  • Recalls: None Found

Summary

The 2014 BMW 335i xDrive, while a desirable vehicle, can present owners with a range of issues. Engine oil leaks and electrical problems are common, and the transmission can be a source of expensive repairs. While some issues are relatively minor, others, such as mechatronic unit failure, can be costly to address. Potential buyers should factor in these potential repair costs and prioritize vehicles with thorough maintenance records. The severity of the problems ranges from minor inconveniences to major mechanical failures, and the associated costs can vary widely depending on the issue and the repair shop.