2018 BMW 330i

Introduction

The 2018 BMW 330i is a luxury sedan powered by a 2.0-liter turbocharged four-cylinder engine producing 248 horsepower and 258 lb-ft of torque. It is available with either a six-speed manual transmission or an eight-speed automatic transmission. The 330i is praised for its agile handling, comfortable interior, and impressive performance. However, it has also been plagued by several issues.

Engine

• B48 2.0L Turbocharged Four-Cylinder
  • Intake Manifold Cracking
    • Description/Symptoms: Cracking in the intake manifold can cause reduced power, increased fuel consumption, and rough idling.
    • Solution: Replacement of the intake manifold.
    • Estimated Cost to Fix: $800 - $1,200+
    • Recalls: NHTSA Campaign Number 22V207000

Transmission

• Six-Speed Manual
  • No Major Issues Found
• Eight-Speed Automatic
  • Mechatronic Sleeve Failure
    • Description/Symptoms: Failure of the mechatronic sleeve can cause loss of power, harsh shifting, and difficulty shifting gears.
    • Solution: Replacement of the mechatronic sleeve.
    • Estimated Cost to Fix: $2,000 - $3,000+
    • Recalls: NHTSA Campaign Number 20V584000

Suspension

• No Issues Found

Electrical

• Power Distribution Box Failure
  • Description/Symptoms: Failure of the power distribution box can cause loss of power, electrical malfunctions, and starting problems.
  • Solution: Replacement of the power distribution box.
  • Estimated Cost to Fix: $1,200 - $1,800+
  • Recalls: NHTSA Campaign Number 23V073000

Exterior

• Fading Headlight Lenses
  • Description/Symptoms: The headlight lenses may fade or become cloudy over time, reducing visibility.
  • Solution: Replacement of the headlight lenses.
  • Estimated Cost to Fix: $400 - $600+
  • Recalls: None Found

Interior

• Sunroof Rattle
  • Description/Symptoms: Rattles may develop in the sunroof due to loose bolts or misaligned components.
  • Solution: Tightening bolts or realigning components.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found

Summary

The 2018 BMW 330i is a capable luxury sedan but has been marred by reliability issues. The most common problems are related to the intake manifold, mechatronic sleeve, and power distribution box. While some of these issues are minor and inexpensive to fix, others can be major and costly.