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Engine reliability insights, buying guides, and technical deep dives.
BMW F30 3 Series: Which Engine and Year to Choose
The BMW F30 came with 8 different engines ranging from 35/100 to 93/100. Here's which engine and year combination gives you the most reliable 3 Series.
Read more →Turbo vs Naturally Aspirated: Which Engines Last Longer?
We compared reliability scores of 265 engines. Naturally aspirated engines score higher on average — but the best turbos are catching up. Here's the data.
Read more →BMW N47 Timing Chain Problems: What Every Buyer Must Know
The BMW N47 2.0 diesel has a fatal flaw — a rear-mounted timing chain that stretches and fails. Here's what to check before buying a 320d or 520d.
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