# 2002-2008 BMW 730d The BMW 730d combines 7 Series luxury with efficient diesel performance, featuring a 3.0-liter straight-six turbodiesel producing around 218-231 horsepower depending on the model year. This executive sedan delivers impressive torque and fuel economy unusual for its class. Reviewers praise its refined engine, commanding road presence, and technology like iDrive and adaptive suspension. However, it's infamous for complex electronics that can prove expensive to repair, along with air suspension and turbocharger issues as mileage increases. The 730d appeals to budget-conscious luxury buyers seeking a prestigious German sedan without flagship running costs. It's ideal for highway cruising and long-distance business travel, where the diesel's efficiency shines. Today, it offers excellent value for those willing to budget for maintenance, particularly attractive in European markets where diesel infrastructure remains strong.
The BMW 730d (E65/E66) features expensive diesel maintenance including complex emissions systems prone to failure. The iDrive system, air suspension, and electronics are notoriously problematic and costly to repair. Parts are premium-priced. However, the M57 diesel engine itself is reliable. Insurance costs are moderate despite the luxury badge given the car's age.
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