2001 Audi A4 Reliability Report

NHTSA data as of Oct 15, 2026Published Oct 19, 2026

Caution

Ranks 17th of 24 A4 years we score.

Owner complaints: 218; 5 are recall notices
Per 10,000 cars: 49.5; 43,015 made for the U.S.
Vs the average car: 1.3×; same age, 1× is average
Serious outcomes: 56; crash, fire, injury, stall or tow
Recalls: 1
NHTSA crash rating: –

← 2000 A4 2002 A4 →

Should You Buy the 2001 Audi A4?

Only after careful checks. Our reliability score for the 2001 Audi A4 is 68 out of 100, which rates Caution. Owners reported about 1.3 times as many problems as for the average car of the same age. It ranks 17th of the 24 A4 years we score.

The most reported problem is the instrument cluster, mostly stopped working (53 of 218 complaints). Owners also complain about the ignition coil or spark plug and the brakes. 56 of the 218 complaints describe a serious outcome, such as a crash, a fire, an injury or stalling while driving.

It has 1 recall. For comparison, the 2000 scores 63.

Before you buy, check that the recalls were done and get an independent inspection. The full checklist is at the end of this page.

Pros

No do-not-drive or park-outside recalls

Cons

About 1.3 times the problems of the average car its age
Instrument cluster: stopped working53 complaints
Ignition coils or spark plugs failure19 complaints
Brakes: loss of braking18 complaints

How the 2001 A4 Earned Its Score

Every model year starts at 100. Each part takes points away when this year has more problems than the average car of the same age. How we score

Score breakdown
Item	Vs average	Points lost
Starting score		100
Serious problems	1.1×	−18
Everyday problems	1.8×	−9
Problems in the last two years	Not counted	–
Recalls	0.59×	−5
Score		68

Problems in the last two years are not counted for the 2001 A4. If it were exactly average, its 43,015 cars would draw about 0.3 complaints in two years at this age, too few to compare. Their 30% moves to serious and everyday problems, which count for 80% of this score instead of 50%.

What Owners Report

We read all 218 complaints filed with NHTSA for the 2001 Audi A4, one by one, and grouped them by the problem they describe. The most reported problems come first. A complaint that describes more than one problem is counted under each, so the counts add up to more than 218.

Instrument cluster: stopped working
53 complaints (24%)
A feature that stopped working, problems that come and go and a failure. 1 of these 53 complaints describes a serious outcome: being stranded. Median mileage when it started: about 70,000 miles.
Ignition coils or spark plugs failure
19 complaints (9%)
A failure, a loss of power and rough running or misfires. 9 of these 19 complaints describe a serious outcome, most often stalling or losing power while driving. In 6 complaints, the problem came back after a repair. Median mileage when it started: about 14,000 miles.
Brakes: loss of braking
18 complaints (8%)
Loss of braking, parts breaking or coming apart and unusual noises. 9 of these 18 complaints describe a serious outcome, most often loss of braking. In 6 complaints, the dealer could not find or fix the problem. Median mileage when it started: about 37,000 miles.
ABS failure
13 complaints (6%)
A failure, warning lights and a feature that stopped working. Median mileage when it started: about 78,000 miles.
Tires: parts breaking or coming apart
10 complaints (5%)
Parts breaking or coming apart, damage and unusual noises. 1 of these 10 complaints describes a serious outcome. Median mileage when it started: about 45,000 miles.
Cooling system: a leak
8 complaints (4%)
A leak. 2 of these 8 complaints describe a serious outcome. In 5 complaints, the dealer could not find or fix the problem. Median mileage when it started: about 48,000 miles.
Seats: damage
8 complaints (4%)
Damage and parts breaking or coming apart. In 3 complaints, the problem came back after a repair. Median mileage when it started: about 43,000 miles.
Timing belt failure
7 complaints (3%)
A failure, parts breaking or coming apart and slipping. 5 of these 7 complaints describe a serious outcome, most often stalling or losing power while driving. Median mileage when it started: about 92,000 miles.
Timing chain or camshaft failure
6 complaints (3%)
A failure that needed a new part, early wear and a leak. Median mileage when it started: about 48,000 miles.
Wiring, fuses or body control module: a fire
6 complaints (3%)
A fire, damage and smoke or a burning smell. 3 of these 6 complaints describe a serious outcome, most often a fire. Median mileage when it started: about 40,000 miles.
Airbag warning light
5 complaints (2%)
Warning lights and a stored fault code. Median mileage when it started: about 86,000 miles.
Stall (cause not stated)
5 complaints (2%)
Stalling. All 5 describe a serious outcome, most often stalling or losing power while driving. Median mileage when it started: about 36,000 miles.
Airbags: no deployment in a crash
4 complaints (2%)
No deployment in a crash and deployment with no crash. Median mileage when it started: about 66,000 miles.
Brake power assist: a hard pedal or less assist
4 complaints (2%)
A hard pedal or less assist and loss of braking. 1 of these 4 complaints describes a serious outcome: a crash. Median mileage when it started: about 90,000 miles.
Engine: a fire
4 complaints (2%)
A fire, unusual noises and rough running or misfires. 2 of these 4 complaints describe a serious outcome, most often a fire. Median mileage when it started: about 80,000 miles.

Show 16 more problems

Engine oil leak
4 complaints (2%)
A leak. Median mileage when it started: about 62,000 miles.
Engine oil sludge failure
4 complaints (2%)
A failure. Median mileage when it started: about 80,000 miles.
Headlights: works on and off
4 complaints (2%)
Problems that come and go, damage and wrong readings. 1 of these 4 complaints describes a serious outcome: loss of visibility. In 3 complaints, the problem came back after a repair. Median mileage when it started: about 60,000 miles.
Check engine light (cause not stated)
3 complaints (1%)
Warning lights. Median mileage when it started: about 37,000 miles.
Screen and audio: works on and off
3 complaints (1%)
Problems that come and go, sticking or stiffness and a failure.
Side or curtain airbags: deployment with no crash
3 complaints (1%)
Deployment with no crash and no deployment in a crash. Median mileage when it started: about 140,000 miles.
Body seals (water leak): water leaking in
2 complaints (under 1%)
Water leaking in.
Climate controls: sticking or stiffness
2 complaints (under 1%)
Sticking or stiffness.
Engine failure
2 complaints (under 1%)
A failure and parts breaking or coming apart. Both describe a serious outcome, most often stalling or losing power while driving.
Oil pressure failure
2 complaints (under 1%)
A failure.
Cylinder head: damage
2 complaints (under 1%)
Damage and shattering or cracking. 1 of these 2 complaints describes a serious outcome.
Seat heater: overheating
2 complaints (under 1%)
Overheating and smoke or a burning smell.
Vehicle fire (cause not stated)
2 complaints (under 1%)
A fire. Both describe a serious outcome, most often a fire.
Steering: early wear
2 complaints (under 1%)
Early wear and shattering or cracking.
Transmission: harsh or delayed shifts
2 complaints (under 1%)
Harsh or delayed shifts.
Valve train: damage
2 complaints (under 1%)
Damage.

Reported Once (28)

Show the 28 problems reported once

Uneven tire wear: early wear
Ball joints and control arms: unusual noises
Control module (unspecified): warning lights
Door latches: parts breaking or coming apart
CV axles: parts breaking or coming apart
Engine sensors or computer failure
Exhaust or catalytic converter: overheating
Frontal airbags: deployment with no crash
Fuel gauge or level sensor: wrong readings
Fuel pump: unusual noises
Fuel leak
Hood latch: parts breaking or coming apart
Loss of power (cause not stated)
Manual transmission or clutch: a fire
Mirrors: stopped working
Alarm: the system not working when needed
Anti-theft alarm: easily defeated by thieves
Brake rotor backing plates: reduced braking
Electronic sensor (unspecified) failure
Emission coil failure
Engine bearings: early wear
Windshield washer pump: shattering or cracking
Oxygen sensor: warning lights
Parking brake: the car rolling away
Seat belts: not closing or latching
Sunroof drains (water leak): water leaking in
Unintended acceleration (cause not stated)
Wheel bearings failure

How the 2001 Audi A4 Compares With Other Years

The other A4 years of the 1st generation (B5), 2000 to 2001, and the years just before and after it.

Year	Rating	Score	Vs average	Per 10k cars	Recalls	Most reported problem
2002	Caution	65	1.7×	52.3	1	Ignition coils or spark plugs failure
2001 This year	Caution	68	1.3×	49.5	1	Instrument cluster: stopped working
2000	Caution	63	1.9×	93.4	2	ABS: warning lights

See every A4 year

2001 Audi A4 Recalls

One recall covers the 2001 Audi A4. It was issued in June 2021: “Air Bag Inflators May Underinflate Bag.” A VIN check at NHTSA shows whether it is still open on a given car.

Air Bag Inflators May Underinflate Bag
Due to a manufacturing issue, the NADI inflators may absorb moisture, possibly causing the air bag to deploy improperly in the event of a crash. In the event of a crash necessitating air bag deployment, the air bag may not properly protect the occupant, increasing the risk of serious injury or death.
NHTSA 21V470000 Recall report (PDF)Owner letter (PDF)Issued Jun 23, 2021. By the third quarter of 2023, 5% of the cars in this recall had been fixed.

2001 Audi A4 NHTSA Investigations

NHTSA has opened one investigation that covers the 2001 Audi A4. It has closed.

Brake and clutch pedal bracket
Closed
NHTSA's preliminary evaluation looked into the brake and clutch pedal bracket on 1998-2001 Audi A4 and A6 cars. NHTSA's record has no summary of what it found or how it ended.
Jan 23, 2002 to Jul 12, 2002

Check Before You Buy

A checklist for the 2001 A4, from its recall and the problems owners report most.

Confirm the Recalls Were Done

Ask the seller for proof that each of these recalls was repaired.

Air Bag Inflators May Underinflate Bag NHTSA 21V470000

On the Test Drive

Test the screen, audio and phone connection for freezing or rebooting.
Have the engine scanned for stored misfire codes. A rough idle or a flashing check-engine light is a warning sign.
Brake firmly from a moderate speed. A soft, hard or pulsing pedal, or a brake warning light, is a warning sign.

Ask the Seller

Ask whether any of these were ever repaired, and ask to see the receipts.

Instrument cluster
Ignition coil or spark plug
Brakes
Also ask for the service records, especially oil changes.

Before You Pay

Get an independent pre-purchase inspection from a mechanic you choose.
Decode the VIN to confirm the model year, engine and trim.
Check the title for salvage, flood or rebuilt branding.

What to do next

All A4 Years →Best years and years to avoid, side by side.Compare With Other Years →Put up to four model years side by side.Find Warranty Extensions →Repairs Audi may still cover for this year.Decode a VIN →Confirm the exact year, engine and trim of a car.