2005 BMW 645ci

Compact Sedan Premium
BMW 645ci 2005
19MPG Combined
3 Trims
Updated February 27, 2026

The 2005 BMW 645ci Compact Sedan provides 17–19 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.

2005 BMW 645ci Specifications

SpecValue
Combined MPG17–19 combined MPG depending on trim
City MPG16
Highway MPG24
Body StyleCompact Sedan
Fuel TypePremium
DriveRWD
Available Trims3

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
Man15/23/184.4L 8cylManual 6-spd
8 cyl16/24/194.4L 8cylAutomatic (S6)
8 cyl15/22/174.4L 8cylAutomatic (S6)

Annual Fuel Cost

Based on EPA estimates, the 2005 BMW 645ci costs approximately $3,250 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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