2004 Audi A4 buying guide

A data-driven checklist for buying a used 2004 Audi A4, built from 189 owner complaints, 2 recall campaigns, 172 service bulletins and federal safety records — not opinions.

Know before you buy

2 recall campaigns affect this model year. Check each one and confirm the repairs were done — recall work is free at any authorized dealer.
Main problem areas: fuel system, gasoline (46), air bags (26), engine and engine cooling (18), tires (16), vehicle speed control (16).
Symptoms owners describe: stalling (31), airbag warning light (9), check engine light (7), vibration / shaking (7), loss of power (6), hesitation / surging (6). Test-drive with these in mind.
Reported incident mileage: among 165 complaints with a usable odometer reading, half were filed between 40,000 and 85,000 miles (median 60,000). This describes when owners reported problems — it does not predict when a particular vehicle will develop one.
1 federal investigations have named this model year — read what they cover.
Fuel economy: 21–23 MPG combined (EPA; engines: 1.8L 4-cyl, 3L 6-cyl).

When problems get reported

Reported incident mileage among 165 complaints with usable odometer readings.

under 20k		19
20–40k		21
40–60k		41
60–80k		36
80–100k		26
100–150k		16
150k+		6

Before you hand over money

Run the VIN through our free VIN decoder to confirm the exact build.
Check open recalls by VIN at nhtsa.gov/recalls — a recall that was never fixed is a free repair you can claim.
Get a pre-purchase inspection focused on the problem areas listed above.

This guide is generated from official NHTSA, EPA and FARS records. Complaints are unverified owner reports and raw counts are not adjusted for sales volume.