Autoscore logo
←Back to posts
Feb 8, 20266 min read

BMW N47: Timing Chain & Reliability Guide

A technical view of a BMW N47 engine highlighting the timing chain area

Used throughout the 1 Series, 3 Series, and 5 Series (2007-2015), the N47 is a great engine overshadowed by one major engineering choice: the rear-mounted timing chain.

BMW N47 reliabilityN47 timing chain320d engine problemsBMW diesel chain
Helpful tools
Used car listing checkCar evaluation before buyingUsed car report
Brand Expertise

BMW Reliability Hub

Analyze the reliability of BMW engines and models with our expert data guides.

Engine DataModel Reports

The Timing Chain Issue Explained

The timing chain is located at the back of the engine, making any repair an 'engine-out' job. While BMW improved the guides over time, the risk remains a factor for used buyers.

  • Early 2007-2011 models have the highest risk.
  • Listen for a 'shuffling' or 'marbles in a tin' sound from the back of the engine.
  • Frequent oil changes (every 10-15k km) help stave off wear.

Other N47 Concerns

Beyond the chain, the N47 is actually very reliable, though typical diesel issues like EGR clogging and HPFP wear apply.

  • Carbon buildup in the swirl flaps.
  • EGR valve recalls (check if yours was done).
  • Great torque and fuel economy if maintained.

Considering an older BMW Diesel?

Our reports highlight whether a specific VIN has been part of the major N47 recalls.

Check VIN