# 2007-2010 BMW 635d Coupe The BMW 635d Coupe paired sleek 6 Series styling with BMW's formidable 3.0-liter twin-turbocharged diesel inline-six, producing 286 horsepower and 428 lb-ft of torque. This rare combination delivered surprising performance—0-60 mph in under 6 seconds—while achieving impressive fuel economy for a luxury GT. Reviewers praised its effortless mid-range punch, refined cruising capability, and long-distance comfort, though noted it lacked the sporting edge of petrol M Sport variants. The 635d remains famous as one of the fastest production diesels of its era, particularly popular in Europe. Unfortunately, never sold in North America, it's now sought by enthusiasts who appreciate unconventional performance. Today, it suits buyers seeking a distinctive grand tourer with low running costs, though prospective owners should budget for complex diesel emissions systems and typical BMW maintenance expenses.
The 635d features BMW's complex N57 diesel engine prone to timing chain issues, DPF clogging, and expensive injector failures. Expect high maintenance costs for the twin-turbo system, premium parts pricing, and specialist servicing requirements. Insurance is costly due to performance credentials. However, it's more reliable than gasoline equivalents and offers exceptional fuel economy for its class.
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