The N47D20 engine is a 2.0-liter inline-four diesel engine that was developed by BMW for use in various vehicle models. It was introduced in 2007 and features an aluminum block and cylinder head, four valves per cylinder, and a turbocharger with variable geometry.
The engine produces between 116 to 218 horsepower and between 260 to 450 Nm of torque, depending on the variant. It also features BMW's common rail direct injection technology, which helps to reduce fuel consumption and emissions.
Despite being a reliable engine, the N47D20 has had its fair share of issues, with many owners experiencing timing chain failures, which can cause significant engine damage if not addressed promptly.
In 2014, BMW issued a recall for various models equipped with the N47D20 engine due to faulty timing chain tensioners. However, some owners have still reported issues with their engines outside of the recall period.
Overall, the N47D20 is a powerful and efficient engine, but it is important for owners to keep an eye on their timing chain to avoid costly repairs.
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