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Audi A4

2003 only

122 classified complaints

2003 Audi A4 have 122 classified complaints on record for that year specifically. The most common issue in this year is Wiring harness, grounds and connectors, typically surfacing around 77,500 miles.

Computed directly from stored federal records for 2003 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 year fits

2003

2004

2005

2006

2007

2008

2009

2010

2018

2020

Complaints filed per individual model year — highlighted bars link to their own dedicated page.

What breaks, and when — 2003 only

Wiring harness, grounds and connectors · Electrical 23 complaints

Median onset: 77,500 miles.

More common in newer model years.

Fuel pump and sending unit · Fuel system 14 complaints

Median onset: 75,636 miles.

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

Harsh, delayed or erratic shifting · Transmission 11 complaints

Median onset: 100,000 miles.

More common in newer model years.

Water leaks and seals · Body and interior 9 complaints

Median onset: 50,000 miles.

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

Transmission control module and sensors · Transmission 9 complaints

Median onset: 104,500 miles.

More common in newer model years.

Stalling and no-start · Engine 8 complaints

Median onset: 126,990 miles. 12.5% of these reported an injury, a death, or a crash with fire.

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

Cooling system: radiator, water pump, thermostat, fan · Engine 7 complaints

Median onset: 65,952 miles.

Tends to show up earlier than this model's other issues. · Typical repair: $260–$1,910 nationally.

Automatic transmission internals · Transmission 6 complaints

Median onset: 145,000 miles.

Tends to show up later than this model's other issues. · More common in newer model years. · Typical repair: $2,910–$5,410 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 2003 model year. See the full Audi A4 report for every year and full specs/safety data.