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Audi A4Model year report

2001 Audi A4 Problems

Complaints
131filed with NHTSA
Median mileage
61,028miles, 86 complaints with mileage
Recalls
1campaigns on record
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA crash rating
—overall rating starts with 2011 models
EPA fuel economy
21 mpgcombined, 1.8L 4-cyl FWD · 18 city / 26 hwy

Sources: NHTSA records for the 2001 Audi A4 (complaints, recalls, investigations), EPA fuel economy. Report an error

What owners report

Owners of this model year most often describe the center LCD display in the instrument cluster losing pixels over time, and ABS/brake warning lights triggered by a failed ABS control unit. The 1.8T cars also draw repeated reports of ignition coil failures (sometimes with power loss while driving) and of timing belt/tensioner failures that led to engine damage, along with coolant leaks. Many of these came up well before the mileage at which scheduled service was recommended, and complaints often describe the dealer replacing only the failed part rather than the whole set.

  1. Electrical system

    Instrument cluster LCD losing pixels

    • 16 complaints (12%)
    • median 66,000 mi at 6.8 yrs old (13 state mileage)
    • filed 2003–2012

    The center digital display in the instrument cluster develops dead lines or pixels until parts of it are unreadable or blank. Owners describe it appearing gradually, sometimes worse after the car has sat in the sun, and say it removes the readout they rely on for service and warning messages. Some reported having the cluster or display replaced; others were told it was simply a failed display. Mostly reported between about 40,000 and 70,000 miles, though some owners say it began within a few years of new.

    1 related service bulletin

    What to check: Start the car and read the center cluster display in daylight from the driver's seat; look for missing lines or faded segments. Ask whether the cluster was ever repaired or replaced.

    2 excerpts from owner complaints in NHTSA records

    “The digital instrument cluster is not working properly on my 2001 Audi A4 1.8t. You can only see half the screen on the center display that notifies you when the car needs to be serviced and if any major problems are occurring I feel this is a safety issue and Audi should recall and repair any cars with this malfunction because I have read several reviews of the same problem so obviously it is something they should look into.”

    NHTSA complaint #10330101, filed 2010-05, 35,000 miles

    “I own a 2001 Audi A4 avant 1.8t that I took delivery in august 2000. Late last year, august-october 2003, I noticed that the instrument cluster's center lcd display started to fade on the top part. Later on I figured out that it would happen after the car has been under the heat of the sun for a while. I didn't do anything because I figured it's just my car and I've already gone through my warranty period (4 years/50,000miles) as my car already have 70k miles on it. …”

    NHTSA complaint #10090746, filed 2004-09, 68,000 miles
  2. Electrical system

    Ignition coil failure (rough running, power loss)

    • 21 complaints (16%)
    • median 15,500 mi at 2.3 yrs old (10 state mileage)
    • filed 2002–2014

    Complaints describe the car suddenly running rough or losing power, in some cases stalling or dying at speed, and diagnosis pointing to a failed ignition coil. Several owners report repeat failures one coil at a time and say the dealer replaced only the coil that failed rather than all of them. A few mention fault codes traced to coils not firing properly, and some reference a prior ignition coil service action. Reported at low mileage as well, from under about 20,000 miles up to around 50,000, including cold-start conditions.

    What to check: Ask whether the ignition coils have been replaced and, if so, whether all of them were done at once. Note any check engine light or rough idle on a cold start.

    2 excerpts from owner complaints in NHTSA records

    “An ignition coil on my 2001 Audi A4 failed, causing an extreme loss of power, poor steering and braking. The potential for an accident exists, especially if driving at a higher speed, or in poor weather conditions (as I was). The dealer was authorized to only repair the 1 failed coil, and I am at risk for further failures, a safety concern for me.”

    NHTSA complaint #10005692, filed 2003-02, 8,519 miles

    “I was in the middle of an intersection when my car began to idle irregularly. I managed to get to the side of the road. I was towed to an Audi dealership. Three days later my car was repaired. All that I was told was that my #2 coil pack failed. I was not given any information that the other 3 would most likelt fail also. Upon doing research on message boards I realized that this was an enormous problem. …”

    NHTSA complaint #10004932, filed 2003-01, 30,000 miles
  3. Brakes

    ABS and brake warning lights from control unit

    • 12 complaints (9%)
    • median 81,400 mi at 9.0 yrs old (11 state mileage)
    • owner-quoted repair $1,500 (median of 5 quotes)
    • filed 2003–2012

    Owners describe the ABS light, brake light or both coming on, sometimes with a beep, and the ABS not working while the light is on. Diagnosis typically points to the ABS control module or control unit, and complaints frequently mention quotes in the four-figure range for the repair. Some had the unit replaced and had the same fault return, and others describe sensors being replaced more than once without curing the light. Commonly reported from roughly 60,000 to 110,000 miles, in some cases earlier.

    1 related service bulletin

    What to check: Turn the key to run and confirm no ABS or brake light stays on, then drive and confirm ABS functions. Ask for any records of control module, sensor or pump replacement.

    2 excerpts from owner complaints in NHTSA records

    “1. One day suddenly my Audi 2001 A4 starts to show ABS and brake light to be failing. 2. The failure when diagnosed seems to be a problem with Audi's ABS control unit, and that needs to be repaired. 3. I have not repaired it yet, because dealers quoted a huge price of more than 1500$ to fix the ABS control unit.”

    NHTSA complaint #10298769, filed 2010-01, 75,000 miles

    “Failure of ABS brake control unit in an Audi 2001 A4 while driving on the freeway with snow. It occurred in salt lake city, utah. Abs brake light came on and the ABS brakes weren't working driving on snow and needed to be replaced. $710.00 was the cost of the repair for a faulty unit and a very common problem that Audi knows about it. Good thing that I was going really slow and I was exiting the slippery freeway at the time and I didn't slide. Thank you!”

    NHTSA complaint #10299792, filed 2010-01, 81,400 miles
  4. Engine cooling

    Coolant leaks and oil leaks from seals and gaskets

    • 9 complaints (7%)
    • median 58,508 mi at 4.5 yrs old (8 state mileage, few)
    • filed 2003–2011

    Complaints describe coolant leaks and oil leaks traced to seals, gaskets and the camshaft chain tensioner, sometimes with a burning oil smell. Owners report the repair quoted around a thousand dollars for the tensioner job and note the leak showing up shortly after warranty coverage ended. Some also mention oil sludge concerns leading to oil pump or bearing diagnosis. Usually reported between about 40,000 and 65,000 miles.

    5 related service bulletins

    What to check: Look under the car and around the engine for fresh coolant or oil residue, watch the coolant level over a week, and ask what coolant type was used at service.

    2 excerpts from owner complaints in NHTSA records

    “A4's have a poorly designed cam tensioner that eventually leaks oil. The cost to repair the item is approximately $1000. The dealer (carousel Audi) even admits to the fact that it is a poor design and there have been numerous complaints about it at the dealer. I've also read numerous complaints about it on Audi forums. The leak typically found shortly after the warranty period has expired. I feel strongly that this should be a recall on all respective cars to have it repaired!”

    NHTSA complaint #10131489, filed 2005-08, 53,845 miles

    “1) normal driving 2) cam shaft gasket failure. Causing oil leak. 3) taken to repair shop. Audi maintenance warranty does not check for this. Issue occurred after warranty expired after 50000 miles.”

    NHTSA complaint #10145042, filed 2005-12, 58,000 miles

Buying note. On a car this age, records matter more than the odometer: ask specifically about timing belt and tensioner service, ignition coils, the ABS control unit and any cluster repair. Have a shop scan the ABS and engine modules before buying, since warning lights on these cars often point to expensive modules.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.

NHTSA recorded 131 consumer complaints for the 2001 Audi A4. 86 of the complaints include a mileage, and 37% of those were filed for vehicles with under 50,000 miles; the median is 61,028 miles. Of all complaints, 5 involved a crash, 9 a fire, 1 an injury, according to the filers. NHTSA lists 1 recall campaign and 96 technical service bulletins for this model year.

Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Visibility (wipers, defrost, mirrors) (3), Engine (2), Equipment (2), Seats (2), Tires (2), Latches, locks and linkages (1), Body and structure (1), Vehicle speed control (1).

Example complaints

Electrical system: “There have been no accidents so far however my warning display on my instrument cluster on my 2001 Audi A4 1.8t has be continually fading in warm weather leaving me unable to see if there are any problems with my car. This can become very serious if I can't see if something major comes up that needs immediate attention.”

NHTSA complaint #10267270, filed 2009-04, 88,153 miles

Brakes: “While driving in suburban traffic, I noticed the brake pedal fully dress when I attempted to slow from about 30 MPH. Upon subsequent stops, there was a metal on metal sound. Upon inspection, the right front outer pad had completely detached from backing plate. The car was inspected by Audi only 3k miles earlier and there was no indication of brake pad wear. Neither the dealer nor Audi would acknowledge or accept responsibility.”

NHTSA complaint #10274334, filed 2009-06, 43,000 miles

Engine cooling: “The check engine light on my 2001 Audi A4 quattro came on and was running somewhat roughly. I called the dealerships service department and they told me to bring it in. On the 8-mile freeway drive the engine caught fire and destroyed the engine.”

NHTSA complaint #10276441, filed 2009-07, 6,700 miles

Air bags: “All airbags failed to deploy in a driver's side t-bone collision. A-4 is equipped with side airbags. A-4 was stationary and occupied, minivan crashed into driver's door and part of front quarter panel. Van's rate of travel was 20 to 30 MPH in reverse! My wife suffered neck and shoulder injuries. Local Audi dealer replaced the side airbag # 8d0 880 241 aa and the airbag controller module # 8d0 959 655 g. Only at my insistence, was this work performed when I continued to question why no airbags deployed. …”

NHTSA complaint #10414033, filed 2011-07, 112,500 miles

Mileage when problems were reported

37% of the 86 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 38,000 and 89,420 miles.

5%0–109%10–2523%25–5026%50–7521%75–10013%100–1503%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (86 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 61,028 miles.

Complaints by year filed

Trend: falling. Complaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

’00’0326’06’09’12’16’26
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2001 Audi A4 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
A4 FWD1.8L 4-cyl5-speed manual202923$3,550
A4 FWD1.8L 4-cyl5-speed automatic182621$3,900
A4 FWD2.8L 6-cyl5-speed automatic162419$4,350
A4 Avant quattro 4WD/AWD1.8L 4-cyl5-speed manual192722$3,750
A4 Avant quattro 4WD/AWD1.8L 4-cyl5-speed automatic182520$4,100
A4 Avant quattro 4WD/AWD2.8L 6-cyl5-speed manual162219$4,350
A4 Avant quattro 4WD/AWD2.8L 6-cyl5-speed automatic152218$4,550
A4 quattro 4WD/AWD1.8L 4-cyl5-speed manual192722$3,750
A4 quattro 4WD/AWD1.8L 4-cyl5-speed automatic182520$4,100
A4 quattro 4WD/AWD2.8L 6-cyl5-speed manual162219$4,350
A4 quattro 4WD/AWD2.8L 6-cyl5-speed automatic162318$4,550

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2001 Audi A4 → · Check a VIN at nhtsa.gov/recalls

NHTSA investigations

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 96 on record; the latest 10 are shown.

See all 96 bulletins →

Other model years of the Audi A4

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20231030,0000—28—Too new
2022632,4003—29—Not enough data
2021112,6744528—Not enough data
202012826,000353084 · MoreRising
20191050,0001530—Not enough data
20184512,000153144 · TypicalRising
20175628,00015310 · FewerFalling
20161145,0000527—Not enough data
20151944,0000526—Falling
20143280,00005260 · FewerFalling
201324101,0000526—Falling
201219109,0000425—Falling
201111105,5000425—Not enough data
20106483,7500—2650 · TypicalFalling
200912065,0002—25100 · MoreStable
200817562,0004—24100 · MoreFalling
200719674,0003—24Not compared (before 2008)Stable
200629560,0003—24Not compared (before 2008)Falling
200521958,4003—23Not compared (before 2008)Falling
200418959,5602—23Not compared (before 2008)Falling
200321060,0003—23Not compared (before 2008)Falling
200218130,0001—21Not compared (before 2008)Falling
200113161,0281—21Not compared (before 2008)Falling
20009662,9002—21Not compared (before 2008)Falling
199919075,0004—22Not compared (before 2008)Stable
199825880,6504—21Not compared (before 2008)Falling
19979892,4576—20Not compared (before 2008)Stable
19968966,8214—20Not compared (before 2008)Stable

All Audi A4 model years · Best and worst years by complaints

Frequently asked questions

What are the most common problems with the 2001 Audi A4?

Owners of this model year most often describe the center LCD display in the instrument cluster losing pixels over time, and ABS/brake warning lights triggered by a failed ABS control unit. The issues reported most often: Instrument cluster LCD losing pixels; Ignition coil failure (rough running, power loss); ABS and brake warning lights from control unit.

How many NHTSA complaints does the 2001 Audi A4 have?

NHTSA recorded 131 consumer complaints for the 2001 Audi A4 as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2001 Audi A4 is reported most often?

Electrical system is named most often, in 35 complaints (27% of the total), followed by brakes with 33.

Has the 2001 Audi A4 been recalled?

NHTSA lists 1 recall campaign for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2001 Audi A4 get?

The EPA rates the 2001 Audi A4 (A4, 1.8L 4-cyl) at 21 mpg combined, 18 city and 26 highway, with an estimated annual fuel cost of $3,900 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2001 Audi A4 reported?

Among the 86 complaints that include a mileage, the median is 61,028 miles and the middle half falls between 38,000 and 89,420 miles; 37% were filed for vehicles with under 50,000 miles.

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. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.