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BMW 645CI

2004–2006 only

69 classified complaints

2004–2006 BMW 645CI models have 69 classified complaints on record for these years specifically. The most common issue in this range is Airbags, seatbelts and restraints, typically surfacing around 65,000 miles.

Computed directly from stored federal records for 2004–2006 model years only — not blended with the rest of this vehicle's production run. See the full BMW 645CI report for every year combined.

What breaks, and when — 2004–2006 only

Airbags, seatbelts and restraints · Body and interior 26 complaints

Median onset: 65,000 miles.

Tends to show up earlier than this model's other issues.

Body control and other modules · Electrical 10 complaints

Median onset: 102,000 miles.

Master cylinder and booster · Brakes 9 complaints

Median onset: 93,250 miles.

Doors, windows, latches, seats and trim · Body and interior 6 complaints

Median onset: 76,000 miles.

Harsh, delayed or erratic shifting · Transmission 6 complaints

Median onset: 98,345 miles.

Which other vehicles have automatic transmission problems? →
Wiring harness, grounds and connectors · Electrical 3 complaints

Median onset: 100,046 miles.

Cooling system: radiator, water pump, thermostat, fan · Engine 2 complaints

Median onset: 105,000 miles.

Typical repair: $260–$1,910 nationally.

Wheels, studs and lug failures · Wheels and tires 2 complaints

Onset mileage not consistently reported.

From owner-filed complaints to NHTSA, not independently verified. Federal mileage reporting on recent complaints is sparse — see how it works. Cost ranges are national estimates from book labor hours and parts pricing, not this vehicle's actual repair history — they don't account for your location or shop type.

Cost estimator: what will this one cost you?

Enter the car's year and mileage. See which known problems are due in your next 3 years, what each costs at your state's labor rates, which ones to ask the seller about, and routine maintenance to budget for.

Sources: NHTSA Office of Defects Investigation — complaints and recalls, scoped to 2004–2006 model years. See the full BMW 645CI report for every year and full specs/safety data.