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Audi A4

2001–2005 only

455 classified complaints 4 recalls

2001–2005 Audi A4 models have 455 classified complaints on record for these years specifically, plus 4 recalls. The most common issue in this range is Wiring harness, grounds and connectors, typically surfacing around 70,000 miles.

Computed directly from stored federal records for 2001–2005 model years only — not blended with the rest of this vehicle's production run. See the full Audi A4 report for every year combined.

Where this range fits

1996–2000

2001–2005

2006–2010

2011–2015

2016–2020

2021–2024

Complaints filed per 5-year model-year window — highlighted bars link to their own dedicated page.

What breaks, and when — 2001–2005 only

Wiring harness, grounds and connectors · Electrical 130 complaints

Median onset: 70,000 miles.

Tends to show up earlier than this model's other issues. · More common in newer model years.

Airbags, seatbelts and restraints · Body and interior 75 complaints

Median onset: 105,000 miles. 12.0% of these reported an injury, a death, or a crash with fire.

Fuel pump and sending unit · Fuel system 37 complaints

Median onset: 83,500 miles. 2.7% of these reported an injury, a death, or a crash with fire.

Typical repair: $630–$1,700 nationally.

Body control and other modules · Electrical 28 complaints

Median onset: 75,000 miles.

More common in newer model years.

Transmission control module and sensors · Transmission 21 complaints

Median onset: 98,500 miles.

More common in newer model years.

Stalling and no-start · Engine 18 complaints

Median onset: 106,453 miles. 5.6% of these reported an injury, a death, or a crash with fire.

Harsh, delayed or erratic shifting · Transmission 18 complaints

Median onset: 95,000 miles.

More common in newer model years.

Which other vehicles have automatic transmission problems? →
Cooling system: radiator, water pump, thermostat, fan · Engine 17 complaints

Median onset: 91,904 miles.

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

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 2001–2005 model years. See the full Audi A4 report for every year and full specs/safety data.