Thanks for the reply. So, I need to find an X3 with N52 engine to avoid the timing chain failure.It is the N20 engine (turbo 4 cylinder engine) used in the X3 28i for certain X3s from 2012 to 2014 that is reportedly most prone to failure of timing chain guides. The timing chain guide was reportedly redesigned about January 2015 for this engine and is expected to reduce or eliminate the problem.
The X5 35i uses the N55 I6 engine, which is not reported to have the timing chain problem, but may be prone to cooling pump problems after about 50K miles. The F25 X3 used the N52 I6 engine without the turbocharger prior to the introduction of the N20 engine and is believed by some to be more reliable.
Type Code WX93
E Series F25 ()
Model X3 28I (USA)
Colour SPACEGRAU METALLIC (A52)
Upholstery LEDER NEVADA/CX OYSTER (LUCX)
Prod. Date 2014-03-29
I'm guessing the vehicle above (a 2014 X3 with N20 i4 with Prod. Date 2014-03-29) is subject to the timing chain failure issue. Really like this ride otherwise.I think this car is not part of the "fixed" versions. But just to confirm...
BMWtechnician has a web site that discusses the N20 engine's timing chain issues. In response to a question, he estimated 10 to 12 hours of labor plus parts for preventative maintenance to address the issue. It may be prudent to replace more than just the timing chain guard as the incremental cost may be relatively minor.I'm guessing the vehicle above (a 2014 X3 with N20 i4 with Prod. Date 2014-03-29) is subject to the timing chain failure issue. Really like this ride otherwise.
Anyone know the cost to proactively replace the timing chain guard with the redesigned one?
Don't confuse the timing chain guide failure and subsequent total engine destruction with a timing chain failure. Your timing chain could have worn or stretched and needed replacement but it wouldn't have necessarily destroyed the engine.Our 2017 X3 with an N20 engine and 44,500 miles just went in for a timing chain replacement, so I don't think the N20 timing chain issue has been resolved.