BMW 645ci Problems by Year

We compared every BMW 645ci model year from 2004–2005 using 44 owner complaints filed with NHTSA, 0 recalls and federal defect investigations. No 645ci year stands out with an unusual number of complaints.

2model years
44complaints
0recalls
—worst years
—best years

Complaints by model year

200420051133
Owner complaints per model year, BMW 645ci. Colour = our verdict for that year (red: avoid, orange: caution, green: better than average, blue: too new).
YearComplaintsvs. typical*RecallsTop problemVerdict
200533——AirbagLimited data
200411——AirbagLimited data

* Complaints compared with the median 645ci year at the same age, so new and old years are judged fairly. How this works.

Most common BMW 645ci problems

  • Air bagsworst: 2005
    1534%
  • Seat beltsworst: 2005
    920%
  • Brakesworst: 2005
    818%
  • Electrical systemworst: 2005
    716%
  • Engine & coolingworst: 2005
    716%
  • Seatsworst: 2005
    511%
  • Steeringworst: 2005
    49%
  • Transmission & drivetrainworst: 2004
    25%
  • Wheels & tiresworst: 2004
    25%
  • Body & structureworst: 2005
    25%
  • Other / not specified
    25%
  • Lightsworst: 2005
    25%
  • Stability & traction controlworst: 2004
    12%
  • A/C & heaterworst: 2005
    12%
  • Speed control & accelerationworst: 2005
    12%
  • Suspensionworst: 2005
    12%

Frequently asked questions

What years of the BMW 645ci should you avoid?

None of the BMW 645ci years has an unusually high number of complaints compared with the others at the same age.

What are the most common BMW 645ci problems?

Across all years, owners report the most problems with the air bags (15), seat belts (9) and brakes (8). Airbag complaints peak in the 2005 model year.

How many recalls has the BMW 645ci had?

0 recalls across 2004–2005.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.