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EnginePart report

2004 Audi A4 Engine Problems

Complaints
7about this part
Share
4%of 189 total for the year
Median mileage
109,750miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the engine of the 2004 Audi A4, 4% of the 189 complaints for this model year. Where a mileage was given, the median is 109,750 miles. 1 a fire, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I was driving to jacksonville florida and car had shut off on me on the highway in yulee florida I was stuck on the highway for 7 hrs my car is stuck in florida”

NHTSA complaint #11366758, filed 2020-10, 113,000 miles

“I originally had 3 recalls on my vehicle I called in to see about getting them fixed free of charge as explained in the recall tech bulletin .the customer service representative proceeded in getting all of my information then after doing so tells me there are no recalls on my vehicle and proceeded to update my cars info shortly after I went back to the original site of this recall put in my cars info again and all the recalls that was once available for my vehicle was mysteriously gone.I never received a notice and never got it fixed. …”

NHTSA complaint #11349159, filed 2020-08, 157,000 miles

“Oil dipstick & support tube, made of plastic, cracks - brakes into pieces , both on the dipstick & tube that can easily go down the tube into the oil below. Looks like a poor engineering decision to use plastic that after years of heating to near engind tempatures then cooling has a high probability of cranckin and having pieces fall into the engine oil supply - possibally causing engind damage or faliure. Should be replaced every 5 years or with a metal structure that doesn't crack/break off into pieces. …”

NHTSA complaint #10898191, filed 2016-08, 53,000 miles

“During driving check engine start blinking and engine start shaking . After stop and turning off engine for a couple of minutes and starting engine again everything was fine until next day . Start engine and engine light was on , car has 2 cylinder misfire , loosing coolant from cooling flange and thermostat was leaking . I took car to local mechanic and change thermostat, cooling flange , j plug , ignition coils and 4 spark plugs , car was running fine for 1 day and start overheating and loosing coolant again and has 2 cylinder misfire . …”

NHTSA complaint #10597817, filed 2014-06, 114,650 miles

“My Audi stopped blowing out heat first and then the check engine light came on. When I took it to get the check engine light code tested it read pressure default. Not long after my air bag light came on. Now my car is leaking coolant.”

NHTSA complaint #11092200, filed 2018-05

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2023330%
2022233%
202119%
2019220%
2018511%
20172239%
2016764%
20151053%
20141341%
2013625%
20121368%
2011764%
20103758%
20094437%
2008137%
2007179%
2006155%
2005105%
200474%
200373%
200253%
200122%
199821%

Other parts of the 2004 Audi A4

Fuel system
56 complaints
Air bags
26 complaints
Engine cooling
18 complaints
Tires
16 complaints
Vehicle speed control
16 complaints
Visibility (wipers, defrost, mirrors)
16 complaints
Electrical system
15 complaints
Exterior lighting
14 complaints
Transmission and drivetrain
12 complaints
Other or unknown
6 complaints
Brakes
5 complaints
Body and structure
4 complaints

← All problems reported for the 2004 Audi A4

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology