For decades, the BMW 3 Series was the king of both compact sedans and coupes, being available in both simultaneously. That changed in 2013 when BMW introduced the BMW 4 Series – essentially the same as the 3 Series sedan but with fewer doors and more ‘grand tourer’ styling. It shares many of its components and engines with its sedan counterpart, too, making parts availability good on the whole. It’s been a popular option – but what’s the BMW 4 Series reliability record like?
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