645Ci Coupe (2003-2005)

Can you afford a 2003-2005 BMW 6 Series 645Ci Coupe in 2025?

# 2003-2005 BMW 645Ci Coupe The E63-generation 645Ci marked BMW's return to the large luxury coupe segment after a 14-year hiatus. Powered by a 4.4-liter V8 producing 325 horsepower, it offered muscular performance wrapped in Chris Bangle's controversial "flame surfacing" design—polarizing enthusiasts with its dramatic styling and prominent "Bangle butt" trunk. Reviewers praised its refined powerplant and advanced iDrive system but criticized the coupe's substantial weight (nearly 4,000 pounds) and complex electronics that have proven expensive to maintain. The 645Ci became infamous for reliability issues, particularly with electronics, cooling systems, and valve stem seals. Today, it suits enthusiasts seeking commanding V8 grand touring at depreciated prices, though buyers should budget generously for maintenance. Best for those who appreciate distinctive styling and don't mind wrenching or mechanic bills.

The 645Ci is notoriously expensive to maintain. The complex N62 V8 engine suffers from valve stem seal failures causing oil consumption, and problematic VANOS systems. The iDrive system and electronic components frequently fail. Parts and labor costs are premium-level. Insurance runs high due to performance classification. Expect significantly above-average ownership costs throughout.

Price Range

$15,000 - $30,000

Market price for 2025

Estimated Annual Costs

Insurance:$1,200

Maintenance:$3,500

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