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2004 BMW

645ci

Auto (S6), 8 cyl, 4.4 L, 4MODE CLKUP

2004 BMW 645ci (photo 1 of 2)
2004 photoOSXPublic domainWikimedia Commons

Overview

Body
Subcompact CarsEPA, from EPA, last updated 6/22/2026
Drivetrain
Rear-Wheel DriveEPA, from EPA, last updated 6/22/2026
Transmission
Automatic (S6)EPA, from EPA, last updated 6/22/2026
Powertrain
GasEPA, from EPA, last updated 6/22/2026
Fuel
PremiumEPA, from EPA, last updated 6/22/2026

Engine & performance

HP
325NHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Power to weight
0.086 hp/lb
Cyl
8EPA, from EPA, last updated 6/22/2026
Aspiration
Naturally aspiratedEPA, from EPA, last updated 6/22/2026

Efficiency

MPG Hwy
22 mpgEPA, from EPA, last updated 6/22/2026
MPG City
15 mpgEPA, from EPA, last updated 6/22/2026
MPG Comb
17 mpgEPA, from EPA, last updated 6/22/2026
Fuel $/yr
$4,550EPA, from EPA, last updated 6/22/2026
Elec. Range
0 miEPA, from EPA, last updated 6/22/2026

Dimensions & capacity

Doors
2NHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Length
190 inNHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Width
73 inNHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Height
54 inNHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Wheelbase
109 inNHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Curb Weight
3,792 lbNHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026

Safety NHTSA, model year

Recalls
0
Owner complaints
11

Reported problems NHTSA owner complaints, model year

  • AIR BAGS22%
  • SEAT BELTS17%
  • ELECTRICAL SYSTEM13%
  • SEATS9%
  • SERVICE BRAKES9%
  • ELECTRONIC STABILITY CONTROL (ESC)4%

Source: NHTSA owner complaints, 23 total.

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 36k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.