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These are the 3 Least Reliable BMW M3 Years According to Real Owners

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Apr 23,2023


The BMW M3 is one of the world’s most legendary sports cars, but that doesn’t mean that they’re all perfect. In fact, the middle generations of M3 are among the least-reliable BMWs. Faced with high repair costs and frequent problems, real owners report that these are the three worst BMW M3 generations for reliability.

The E46 BMW M3 is the least reliable despite a legendary reputation.

Sold from 2000 to 2006, the E46 M3 is one of the most iconic cars of the early millennium. It came with the S54 inline-six cylinder engine and delivered 338 horsepower and 269 pound-feet of torque. In addition. A redline at 8,000 rpm makes this one of the best-sounding BMW engines of all time.

However, this generation of BMW M3 is also the least reliable. According to Vehicle History, the E46 M3 is rife with expensive problems relating to both the engine and suspension components. Some of the leading issues are rod bearing failure, which costs up to $2,500 in preventative maintenance. Unfortunately, if not done before failure, the resulting damage often means a complete engine replacement.

In addition, the least reliable M3 also faces rear subframe issues that hinder its structural integrity. Getting ahead of this issue means yet another four-figure repair bill. Finally, the BMW VANOS variable engine timing system is a known issue as well. Like the previous problems, this will also leave you with a four-figure repair, though there are preventative solutions that can increase durability.

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