TroubleAtlas Score
AUDI A4 (1996–2024) — Verified Specs, Fluids & OBD2
Built 1996–2024 · all production years covered on this single page
2.0L I4 TFSI • Gasoline
© Wikimedia Commons CC BY-SA
TroubleAtlas Score
An independent value score for the Audi A4 (1996–2024) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliabilityn/a
Safety & recallsn/a
Repair cost7.1
Parts & repairability3.8
Maintenance & durabilityn/a
Documentation & support7.1
Independent · Verified · Never for sale
Every figure on this Audi A4 (1996–2024) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.
The Audi A4 (1996–2024) uses Castrol Edge 0W-20 engine oil. It is powered by a 2.0L I4 TFSI engine. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.
Common problems
Common repairs
Fluids & lubricants
Battery
Fault codes (OBD2)
Dashboard lights
Parts comparator
Accessories & tools
Tyres
Recalls & TSB
Complaints
Workshops nearby
COMMON PROBLEMS
Engine overheatingFREQUENT
Engine temperature over limits — check coolant level, thermostat and radiator.
Related codes: P0217
Oil pressure sensor: low signalFREQUENT
ECU detects insufficient oil pressure — check oil level and sensor.
Related codes: P0522
Insufficient oil pressureFREQUENT
Oil pressure below critical threshold — stop the engine and check immediately.
Related codes: P0524
Engine control module (PCM) faultFREQUENT
Faulty ECU processor — requires specialist workshop diagnosis.
Related codes: P0606
Throttle actuatorFREQUENT
Throttle actuator motor circuit open — loss of throttle response.
Related codes: P2100
COMMON REPAIRS
Front brake pads
Difficulty: Medium
1.1h
€77 – €99
Rear brake pads
Difficulty: Medium
1.2h
€84 – €108
Engine oil change
Difficulty: Easy
0.4h
€28 – €36
ABS Module
Difficulty: Hard
2.7h
€189 – €243
AVERAGE INDICATIVE COSTS
Prices may vary by area and workshop.
Full service
€ 120 – € 200
Full brake service
€ 180 – € 300
Spark plug replacement
€ 80 – € 140
Electronic diagnosis
€ 40 – € 70
OFFICIAL LABOUR TIMES (OLP)
Standard labour hours from a database of 6.6M+ real shop operations, with an indicative labour-cost estimate for your country.
Brakes8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| ABS Module | 2.7h | € 121–€ 202 |
| ABS Pump | 3.4h | € 153–€ 255 |
| ABS Tone Ring | 2.0h | € 90–€ 150 |
| ABS Wheel Speed Sensor - Front | 1.1h | € 49–€ 82 |
| ABS Wheel Speed Sensor - Rear | 1.1h | € 49–€ 82 |
| Brake Bleed - All Four | 1.4h | € 62–€ 105 |
| Brake Booster | 3.4h | € 153–€ 255 |
| Brake Booster Check Valve | 0.4h | € 18–€ 30 |
Cooling8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Coolant Bypass Pipe | 2.0h | € 90–€ 150 |
| Coolant Flush | 1.4h | € 62–€ 105 |
| Coolant Reservoir | 0.7h | € 31–€ 52 |
| Coolant Temperature Sensor | 0.7h | € 31–€ 52 |
| Cooling Fan Assembly | 1.4h | € 62–€ 105 |
| Cooling Fan Clutch | 1.4h | € 62–€ 105 |
| Cooling Fan Motor | 2.0h | € 90–€ 150 |
| Cooling Fan Relay | 0.4h | € 18–€ 30 |
Electrical8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Airbag - Driver | 1.4h | € 62–€ 105 |
| Airbag - Passenger | 2.0h | € 90–€ 150 |
| Airbag - Side | 2.7h | € 121–€ 202 |
| Airbag Module/Computer | 1.4h | € 62–€ 105 |
| Alternator | 2.0h | € 90–€ 150 |
| Alternator Belt | 0.7h | € 31–€ 52 |
| Amplifier | 2.0h | € 90–€ 150 |
| Antenna | 0.7h | € 31–€ 52 |
Engine8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Boost Pressure Sensor | 0.7h | € 31–€ 52 |
| Camshaft Position Sensor | 1.4h | € 62–€ 105 |
| Camshaft R&R | 10.8h | € 486–€ 810 |
| Connecting Rod Bearings | 20.2h | € 909–€ 1515 |
| Crankshaft Position Sensor | 1.4h | € 62–€ 105 |
| Crankshaft R&R | 27.0h | € 1215–€ 2025 |
| Cylinder Head R&R | 8.1h | € 364–€ 607 |
| Cylinder Head Resurface | 10.8h | € 486–€ 810 |
Exhaust8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Air Injection Check Valve | 1.1h | € 49–€ 82 |
| Catalytic Converter - California | 2.0h | € 90–€ 150 |
| Catalytic Converter - Direct Fit | 2.0h | € 90–€ 150 |
| Catalytic Converter - Universal | 2.7h | € 121–€ 202 |
| Downpipe | 2.7h | € 121–€ 202 |
| EGR Cooler | 4.1h | € 184–€ 307 |
| EGR Tube | 2.0h | € 90–€ 150 |
| EGR Valve | 1.4h | € 62–€ 105 |
Fuel system8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Charcoal Canister | 1.4h | € 62–€ 105 |
| EVAP Purge Valve | 1.1h | € 49–€ 82 |
| EVAP Vent Valve | 1.1h | € 49–€ 82 |
| Fuel Cap | 0.1h | € 4–€ 7 |
| Fuel Filler Neck | 2.0h | € 90–€ 150 |
| Fuel Filter | 0.7h | € 31–€ 52 |
| Fuel Filter - In-Tank | 2.7h | € 121–€ 202 |
| Fuel Injector - Single | 1.4h | € 62–€ 105 |
HVAC8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| AC Accumulator | 2.0h | € 90–€ 150 |
| AC Clutch Coil | 2.0h | € 90–€ 150 |
| AC Compressor | 3.4h | € 153–€ 255 |
| AC Compressor Clutch | 2.7h | € 121–€ 202 |
| AC Compressor Oil Add | 0.7h | € 31–€ 52 |
| AC Condenser | 3.4h | € 153–€ 255 |
| AC Evaporator | 8.1h | € 364–€ 607 |
| AC Expansion Valve (TXV) | 5.4h | € 243–€ 405 |
Steering8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Center Link/Drag Link | 2.0h | € 90–€ 150 |
| Electric Power Steering Module | 2.0h | € 90–€ 150 |
| Electric Power Steering Motor | 3.4h | € 153–€ 255 |
| Idler Arm | 1.4h | € 62–€ 105 |
| Pitman Arm | 1.6h | € 72–€ 120 |
| Power Steering Fluid Flush | 0.7h | € 31–€ 52 |
| Power Steering Gear Box | 4.7h | € 211–€ 352 |
| Power Steering Hose - High Pressure | 1.4h | € 62–€ 105 |
Suspension8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Air Line | 1.4h | € 62–€ 105 |
| Air Spring/Air Bag | 2.0h | € 90–€ 150 |
| Air Suspension Compressor | 2.0h | € 90–€ 150 |
| Air Suspension Height Sensor | 1.4h | € 62–€ 105 |
| Air Suspension Valve Block | 2.7h | € 121–€ 202 |
| Ball Joint - Lower | 2.4h | € 108–€ 180 |
| Ball Joint - Upper | 2.0h | € 90–€ 150 |
| Ball Joints - Upper and Lower | 4.1h | € 184–€ 307 |
Transmission8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Kickdown Cable | 1.1h | € 49–€ 82 |
| Neutral Safety Switch | 1.4h | € 62–€ 105 |
| Overdrive Solenoid | 2.7h | € 121–€ 202 |
| Shift Cable | 2.0h | € 90–€ 150 |
| Shift Linkage | 1.4h | € 62–€ 105 |
| Shift Solenoid - Single | 5.4h | € 243–€ 405 |
| Shift Solenoids - All | 11.7h | € 526–€ 877 |
| Torque Converter | 9.0h | € 405–€ 675 |
WORKSHOP LABOUR RATES BY COUNTRY
Average independent-workshop hourly labour rates, to estimate repair costs in your country.
🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
📋 RECALLS & TSB (59)
NHTSA 20V056000
Air Bags › Frontal › Driver Side › Inflator Module
Date: 31/01/2020
Volkswagen Group of America, Inc. (VW) is recalling certain 2000-2001 TT Roadster, 2000 TT Coupe, 1999 Audi A8, 1998-2000 Audi A6, and 1999-2000 Audi A4 vehicles equipped with Non-Azide Driver air bag Inflators (NADI) that do not contain phase stabilized ammonium nitrate (PSAN) p…
NHTSA R/2020/138
Moisture May Enter The Belt-Driven Starter-Alternator
Date: 30-06-2020
It is possible that moisture may enter the belt-driven starter-alternator.
NHTSA R/2018/086
Aluminium Trim May Partly Detach From Loudspeaker Trim In Doors And Cause Injury To Occupants
Date: 30-04-2018
The aluminium trim may become detached from the loud speaker trim in the front or rear doors. Cuts and other injuries from the sharp edges may occur.
NHTSA 06E060000
Exterior Lighting
Date: 29/06/2006
CERTAIN AAI MOTORSPORTS COMBINATION LAMPS SOLD AS REPLACEMENT LAMPS FOR USE ON THE ABOVE LIST PASSENGER VEHICLES. COMBINATION LAMPS NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE …
NHTSA 06E060000
Exterior Lighting
Date: 29/06/2006
CERTAIN AAI MOTORSPORTS COMBINATION LAMPS SOLD AS REPLACEMENT LAMPS FOR USE ON THE ABOVE LIST PASSENGER VEHICLES. COMBINATION LAMPS NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE …
NHTSA 07V375000
Fuel System, Gasoline › Delivery › Fuel Pump
Date: 28/08/2007
ON CERTAIN VEHICLES EQUIPPED WITH 1.8L TURBO, 2.8L V6, OR 3.0L ENGINES, A CHANGE IN THE ELECTRICAL MOTOR COMPONENTS IN THE FUEL PUMP CAN LEAD TO AN INOPERATIVE FUEL PUMP AND, ULTIMATELY, STOPPAGE OF FUEL SUPPLY TO THE ENGINE CAUSING IT TO STALL.
NHTSA 16V376000
Air Bags
Date: 27/05/2016
Volkswagen Group of America, Inc. (VW) is recalling certain model year 2008-2009 Audi A4, A5, and Q5 vehicles. In the affected vehicles, the air bag control units may corrode and fail.
NHTSA 16V376000
Air Bags
Date: 27/05/2016
Volkswagen Group of America, Inc. (VW) is recalling certain model year 2008-2009 Audi A4, A5, and Q5 vehicles. In the affected vehicles, the air bag control units may corrode and fail.
NHTSA 22V806000
Equipment › Electrical › Infotainment › Video (Touch)Screen/Monitor/Unit
Date: 26/10/2022
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 AUDI A8, A6 Allroad, E-TRON Quattro, 2022 S3, RSQ8, RS7, RS6 Avant, Q8, Q7, Q3, E-TRON Sportback Quattro, S5 Cabriolet, E-TRON GT, S5 Sportback, A7, A6, A5 Sportback, A5 Cabriolet, A4, A4 Allroad, A3, S8, SQ7…
NHTSA 21V295000
Suspension › Rear › Axle › Non-Powered Axle Assembly
Date: 26/04/2021
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2…
NHTSA 22V034000
Tires
Date: 26/01/2022
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 20…
NHTSA R/1997/075
Unscheduled Deployment Of Drivers Air Bag
Date: 26-11-1997
In weather conditions which favour the build up of static electricity the air bag may deploy spontaneously if the driver enters or leaves the vehicle while carrying a high static charge. This can only happen when the car is stationery and not while it is in motion.
NHTSA R/2020/302
Seat Frame May Not Be Bolted Correctly To The Rail On The Driver And Passenger Sides
Date: 26-10-2020
The seat frame may not have been bolted correctly to the seat rail on the driver and/or front passenger side
NHTSA R/2021/236
Rear Axle Suspension Links Nuts Do Not Meet Specifications
Date: 25-06-2021
One or more nuts which do not meet the specifications may have been fitted on the rear axle suspension links.
NHTSA 06E049000
Exterior Lighting
Date: 24/05/2006
CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE …
NHTSA 06E049000
Exterior Lighting
Date: 24/05/2006
CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE …
NHTSA 06V403000
Electrical System › Ignition › Switch
Date: 23/10/2006
ON CERTAIN PASSENGER VEHICLES, AS A RESULT OF A PROBLEM IN THE PRODUCTION PROCESS OF THE IGNITION SWITCH, THE ANCHOR POINT OF THE SPRING MAY CRACK. THIS COULD POTENTIALLY CAUSE THE RETURN SPRING FORCE TO BE INSUFFICIENT FOR RETURNING THE IGNITION KEY TO THE RUNNING POSITION AFTE…
NHTSA 06V403000
Electrical System › Ignition › Switch
Date: 23/10/2006
ON CERTAIN PASSENGER VEHICLES, AS A RESULT OF A PROBLEM IN THE PRODUCTION PROCESS OF THE IGNITION SWITCH, THE ANCHOR POINT OF THE SPRING MAY CRACK. THIS COULD POTENTIALLY CAUSE THE RETURN SPRING FORCE TO BE INSUFFICIENT FOR RETURNING THE IGNITION KEY TO THE RUNNING POSITION AFTE…
NHTSA 21V470000
Air Bags › Frontal › Driver Side › Inflator Module
Date: 23/06/2021
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2000-2001 Audi TT Coupe, TT Roadster, 2000-2002 A4, and S4 vehicles equipped with Non-Azide Driver Air Bag Inflators (NADI) that do not contain phase stabilized ammonium nitrate (PSAN) propellant. Due to a manuf…
NHTSA 22V368000
Engine And Engine Cooling › Engine › Engine Control Module (Ecu/Ecm)
Date: 23/05/2022
Volkswagen Group of America, Inc. (Audi) is recalling certain 2022 Audi A6 Sedan, A4 Sedan, Q5, and Q5 Sportback vehicles. The semiconductor inside the engine control unit may short-circuit and cause an engine stall.
NHTSA 96V088000
Electrical System › Horn
Date: 23/05/1996
THE HORN CAN WORK ONLY INTERMITTENTLY DUE TO INSUFFICIENT ELECTRICAL GROUND CONTACT.
NHTSA 96V088000
Electrical System › Horn
Date: 23/05/1996
THE HORN CAN WORK ONLY INTERMITTENTLY DUE TO INSUFFICIENT ELECTRICAL GROUND CONTACT.
NHTSA 06V017000
Fuel System, Gasoline › Delivery › Fuel Pump
Date: 23/01/2006
ON CERTAIN VEHICLES PRODUCED FROM SEPTEMBER 2002 - MARCH 2003, EQUIPPED WITH 1.8L TURBO, 2.8L V6, OR 3.0L ENGINES, A CHANGE IN THE ELECTRICAL MOTOR COMPONENTS IN THE FUEL PUMP CAN LEAD TO AN INOPERATIVE FUEL PUMP AND, ULTIMATELY, STOPPAGE OF FUEL SUPPLY TO THE ENGINE CAUSING IT T…
NHTSA 97V115000
Seat Belts › Rear/Other
Date: 22/07/1997
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE REAR SEAT BELT RETRACTORS MAY NOT LOCK PROPERLY WHEN ENGAGED, OR NOT REMAIN LOCKED AFTER BEING ENGAGED.
NHTSA 18V427000
Air Bags › Frontal › Passenger Side › Inflator Module
Date: 22/06/2018
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2005-2008 Audi A4 Sedan, A4 Avant, S4 Avant and S4 Sedan, 2007-2008 RS4 Sedan, 2004 RS4 Cabriolet, 2007-2009 A4 Cabriolet and S4 Cabriolet, 2005-2011 A6 Sedan, 2006-2011 A6 Avant, and 2007-2011 S6 Sedan vehicles.…
NHTSA 98V134000
Engine And Engine Cooling › Cooling System
Date: 22/06/1998
VEHICLE DESCRIPTION: PASSENGER VEHICLES. IF THE ENGINE BACKFIRES DURING A COLD-START, AN AIR SCREEN WHICH IS LOOSELY SEATED IN THE AIR FLOW METER CAN BECOME DAMAGED.
NHTSA R/2021/234
The Deployment Of The Takata Airbag May Be Delayed Or Insufficiently Powerful Due To A Potential Reduction In The Performance Of The Gas Generator
Date: 22-09-2021
On vehicles with TAKATA driver airbag and NADI gas generator manufactured within a specific period it is possible that the function of the driver airbag may be restricted due to its age.
NHTSA 99V131001
Service Brakes, Hydraulic › Power Assist › Vacuum › Hoses, Lines/Piping, And Fittings
Date: 21/05/1999
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH AUTOMATIC TRANSMISSIONS. A CONTROL VALVE IN THE VACUUM HOSE CONNECTING THE BRAKE BOOSTER TO THE INTAKE MANIFOLD MAY NOT OPEN OR CLOSE FULLY AT TEMPERATURES BELOW -4 F UNDER CERTAIN DRIVING CONDITIONS.
NHTSA 21V825000
Back Over Prevention › Sensing System › Camera
Date: 20/10/2021
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi A8 and S8, 2022 Audi A5 Sportback, A4 Sedan, E-Tron GT, Q3, Q5, RS6 Avant, A3 Sedan, S5 Sportback, Q5 Sportback, Q7, Q8, RSQ8, SQ7, SQ8, and S3 Sedan vehicles. A software error may prevent the rear-view imag…
NHTSA R/2015/031
Fuel May Leak
Date: 20-04-2015
Fuel may leak from the injector rails. Drivers may notice a smell of fuel and or evidence of a leak
NHTSA R/2018/051
Auxilliary Heater Element In Air Conditioning May Fail And/Or Overheat
Date: 19-02-2018
The auxiliary heater element in the air conditioner may fail as the result of overheating in the area of the connectors. This can lead to smoulder damage or potentially a fire.
NHTSA R/2019/099
Fuel May Escape From One Or Both Fuel Rails
Date: 18-03-2019
It is possible that fuel may escape from one or both fuel rails (low-pressure side).
NHTSA 05V096000
Exterior Lighting › Headlights
Date: 15/03/2005
ON CERTAIN PASSENGER VEHICLES, THERE IS A POSSIBILITY OF XENON HEADLAMP COATING DEGRADATION OVER TIME. THE LUMINOUS TRANSMITTANCE OF THE HEADLAMP MAY DECREASE OVER A PERIOD OF TIME.
NHTSA R/2018/365
Passenger Airbag Module Bolts Securing To The Dash Panel May Be Insufficiently Tightened
Date: 14-12-2018
Air bag securing bolts may not be to the correct torque.
NHTSA R/2022/036
Following A Previous Campaign The Toe And/Or Camber Values On The Rear Axle May In Certain Circumstances Incorrectly Be Changed Without This Being Noticed
Date: 14-02-2022
Following a previous campaign the toe and/or camber values on the rear axle may in certain circumstances incorrectly be changed without this being noticed.
NHTSA 99V248000
Steering › Linkages › Rod › Relay › Connecting
Date: 13/09/1999
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE TIE RODS OF THE STEERING ASSEMBLY ARE PROTECTED ON EACH SIDE BY A SEAL TO PREVENT MOISTURE AND DUST PARTICLES FROM ENTERING THE SWIVEL BEARING MECHANISM. IT IS POSSIBLE THAT SOME TIE ROD SEALS MAY NOT SEAL PROPERLY.
NHTSA 00V317000
Electrical System › Ignition › Switch
Date: 11/10/2000
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE PLASTIC IGNITION SWITCH HOUSING CAN FRACTURE AT THE RETURN SPRING ANCHOR POINT. FRACTURE OF THE HOUSING COULD CAUSE THE RETURN SPRING FORCE TO BE INSUFFICIENT FOR RETURNING THE IGNITION KEY TO THE RUNNING POSITION AFTER STARTING THE…
NHTSA 00V317000
Electrical System › Ignition › Switch
Date: 11/10/2000
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE PLASTIC IGNITION SWITCH HOUSING CAN FRACTURE AT THE RETURN SPRING ANCHOR POINT. FRACTURE OF THE HOUSING COULD CAUSE THE RETURN SPRING FORCE TO BE INSUFFICIENT FOR RETURNING THE IGNITION KEY TO THE RUNNING POSITION AFTER STARTING THE…
NHTSA 17V032000
Air Bags › Frontal › Passenger Side › Inflator Module
Date: 11/01/2017
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2009 Audi A4 Cabriolet, S4 Cabriolet, A6 Avant, A6 Sedan and S6 Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, M…
NHTSA 17V032000
Air Bags › Frontal › Passenger Side › Inflator Module
Date: 11/01/2017
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2009 Audi A4 Cabriolet, S4 Cabriolet, A6 Avant, A6 Sedan and S6 Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, M…
NHTSA R/2018/152
Risk Of Overheating And Failure Of Additional Coolant Pump
Date: 11-06-2018
On affected vehicles moisture may enter the electronic components and cause overheating and failure of the additional coolant pump. localised smoulder damage cannot be ruled out and in individual cases may cause vehicle to catch fire.
NHTSA 21V874000
Seats
Date: 10/11/2021
Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat …
NHTSA 97V175000
Air Bags › Frontal
Date: 08/10/1997
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE DISCHARGE OF STATIC ELECTRICITY UNDER LOW HUMIDITY CONDITIONS CAN ACTIVATE THE DRIVER SIDE AIR BAG WHEN THE DRIVER ENTERS OR EXITS THE VEHICLE AND FORMS AN ELECTRICAL CIRCUIT BY TOUCHING CERTAIN AREAS OF THE STEERING WHEEL.
NHTSA 97V175000
Air Bags › Frontal
Date: 08/10/1997
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE DISCHARGE OF STATIC ELECTRICITY UNDER LOW HUMIDITY CONDITIONS CAN ACTIVATE THE DRIVER SIDE AIR BAG WHEN THE DRIVER ENTERS OR EXITS THE VEHICLE AND FORMS AN ELECTRICAL CIRCUIT BY TOUCHING CERTAIN AREAS OF THE STEERING WHEEL.
NHTSA R/2017/334
Auxilliary Heater Element In Air Conditioning May Fail And/Or Overheat
Date: 08-01-2018
The auxilliary heater element in the air conditioner may fail as a result of overheating in the area of the connectors in conjunction with smoulder damage or potential fire.
NHTSA 14E007000
Engine And Engine Cooling › Engine
Date: 07/03/2014
The Gates Corporation (Gates) is recalling certain aftermarket Tru-Flow Water Pumps, part number TFW 41127, sold at certain NAPA Auto Parts and/or installed by automotive service technicians after November 1, 2013 (and manufactured August 2013 through October 2013) that have a bl…
NHTSA R/2021/204
Vehicles May Have Been Fitted With A Hinged Towing Bracket On Which The Locking Mechanism In The Hinge Module Could Be Faulty
Date: 07-06-2021
Vehicles may have been fitted with a hinged towing bracket on which the locking mechanism in the hinge module could be faulty.
NHTSA 00V414000
Steering › Linkages › Rod › Relay › Connecting
Date: 06/12/2000
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE TIE RODS OF THE STEERING ASSEMBLY ARE PROTECTED ON EACH SIDE BY A SEAL TO PREVENT MOISTURE AND DUST PARTICLES FROM ENTERING THE SWIVEL BEARING MECHANISM. IT IS POSSIBLE THAT SOME TIE ROD SEALS MAY NOT SEAL PROPERLY.
NHTSA 22V742000
Back Over Prevention › Display Function
Date: 05/10/2022
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, SQ7, S5 Cabri…
NHTSA 21V606000
Seat Belts › Rear/Other › Retractor
Date: 05/08/2021
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe…
NHTSA R/2014/146
Air Bags May Not Inflate Correctly
Date: 05-12-2014
On affected vehicles the front air bags may not inflate correctly in the event of an accident and not be able to perform their function
NHTSA R/2024/158
Date: 04-04-2024
On affected vehicles the passenger airbag may in extremely rare cases be overloaded and even burst when the passenger airbag is triggered. If this were to happen small metal parts could become dislodged from the housing and potentially cause life-threatening injury to a vehicle o…
NHTSA R/2019/175
The Locking Mechanism In The Hinged Towing Bracket Could Be Faulty
Date: 03-06-2019
Hinged towing bracket on which the locking mechanism in the hinge module could be faulty.
NHTSA R/2020/265
Moisture May Enter The Belt Driven Starter-Alternator
Date: 02-10-2020
It is possible that moisture may enter the belt-driven starter-alternator.
NHTSA 22V471000
Air Bags › Frontal › Driver Side › Inflator Module
Date: 01/07/2022
Volkswagen Group of America, Inc. (Audi) is recalling certain 1998 Audi A8 and 1997-1998 Audi A4 vehicles equipped with Non-Azide Driver air bag Inflators (NADI) that do not contain phase stabilized ammonium nitrate (PSAN) propellant. Due to a manufacturing issue, the NADI infla…
NHTSA 16V382000
Air Bags › Frontal › Passenger Side › Inflator Module
Date: 01/06/2016
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2004-2008 Audi A4, and 2005-2011 Audi A6 vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, Amer…
NHTSA R/2014/098
Reduction In Braking Performance
Date: 01-10-2014
On affected vehicles engine oil may in isolated instances enter the brake servo via the vacuum feed lie.This may cause the brake servo diaphragm to rupture and loss of brake servo assistance.
NHTSA R/2017/115
Coolant Pump May Overheat
Date: 01-05-2017
Foreign particles in the engine coolant can lead to a blockage in the additional coolant pump and cause the pump to overheat.Foreign particles in the coolant can lead to a blockage in the additional coolant pump and cause the pump to overheat.
NHTSA R/2023/053
Date: 01-02-2023
If a front airbag is deployed it is possible that the gas generator housing in which the propellant is generated may burst on vehicles manufactured within a limited period.
COMMON OBD2 CODES TO CHECK
P0420
Catalyst System Efficiency Below Threshold Bank 1
Powertrain
P0171
System Too Lean Bank 1
Powertrain
P0300
Random/Multiple Cylinder Misfire Detected
Powertrain
P0441
EVAP Incorrect Purge Flow
Powertrain
P0128
Coolant Thermostat Below Regulating Temperature
Powertrain
P0455
EVAP System Leak Detected (Gross Leak)
Powertrain
P0700
Transmission Control System (MIL Request)
Powertrain
P0507
Idle Air Control System RPM Higher Than Expected
Powertrain
P0174
System Too Lean Bank 2
Powertrain
All documented fault codes for this vehicle
The most documented diagnostic codes for this model, by system and severity. Tap a code for the full guide.
P1425
powertrain
LOWP1420
powertrain
MODERATEP1177
powertrain
MODERATEP1176
powertrain
MODERATEP1141
powertrain
HIGHP1136
powertrain
MODERATEP1225
powertrain
HIGHP1214
powertrain
HIGHP1213
powertrain
HIGHP1388
powertrain
HIGHP1564
powertrain
MODERATEP1544
powertrain
HIGHP1543
powertrain
HIGHP1296
powertrain
MODERATEP1137
powertrain
MODERATEP1102
powertrain
MODERATEP1297
powertrain
HIGHP1105
powertrain
MODERATEP1410
powertrain
LOWP1340
powertrain
MODERATE
DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE
53 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.
Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
Brake System WarningBrakes
Immobilizer / Key FaultSecurity
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
Battery / Charging SystemElectrical
Low Fuel WarningFuel
ABS WarningBrakes
Brake Pad Wear IndicatorBrakes
Electronic Parking Brake (EPB)Brakes
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
Suspension Fault / Air SuspensionSuspension
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
4WD / AWD SystemDrivetrain
Bulb Failure WarningLighting
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
A/C System FaultHvac
Clutch Wear WarningTransmission
Cruise Control / ACC FaultADAS
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
Rear Fog Light IndicatorLighting
Lane Departure / LDWS WarningADAS
Forward Collision Warning (FCW/AEB)ADAS
Blind Spot Monitor FaultADAS
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
Door Open WarningBody
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission
REPORTED COMPLAINTS & PROBLEMS (NHTSA)
2929 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Audi A4 across model years 1996–2024. These are real, verified reports submitted by vehicle owners.
117 crash reports 55 fires 85 injuries
Complaints by model year (most reported first)
Model year 2006298
Model year 1998258
Model year 2005218
Model year 2003215
Model year 2008191
Model year 1999190
Model year 2002189
Model year 2004189
Most reported components (all years)
Air Bags447
Electrical System436
Exterior Lighting359
Service Brakes339
Hydraulic290
Engine252
Sample reports
HID LIGHT ON LEFT SIDE FLICKERS THEN CAN FAIL AND GO TO A DIPPED STATUS DISPLAYING IN THE CONSOLE. TURNING OFF THE LIGHTS AND BACK ON WILL RESTORE THEM. FORUMS CANNOT ISOLATE THE ISSUE TO BULB-FLASH UPDATE FOR HEADLIGHTS-OR BALLAST. JUST… (MY 2006)
I AM THE OWNER OF A 2004 AUDI A-4 EQUIPPED WITH PIRELLI P-6 P235/45 R-17 TIRES. THESE TIRES ARE ORIGINAL EQUIPMENT AND THE VEHICLE WAS PURCHESED FROM BELL AUDI OF RAHWAY, NJ. AT APPROXIMATELY 3000 MILES THE REAR RIGHT TIRE DEVELOPED A L… (MY 2004)
VEHICLE IS EXPERIENCING THE SAME DEFECT WITH THE TIE RODS AS STATED IN RECALL NUMBER 99 V 248 000, BUT VEHICLE IS NOT INCLUDED, CAUSE RECALL IS ON THE LATER YEAR VEHICLE. PLEASE PROVIDE MORE DETAILS. TS (MY 1997)
WHILE EMERGENCY BRAKE WAS ENGAGED VEHICLE BEGAN TO ROLL. STOPPED AT BOTTOM OF DRIVEWAY, TOOK TO DEALER AND THE DEALER WAS UNAWARE OF PROBLEM.*AK (MY 1999)
Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 1996–2024.
Frequently Asked Questions
Does the Audi A4 have any safety recalls?
Yes — 38 official NHTSA recall campaign(s) affect this model, mainly: EXTERIOR LIGHTING, ELECTRICAL SYSTEM:IGNITION:SWITCH, ELECTRICAL SYSTEM:HORN. Check the recalls section for your exact year/VIN.
What does fault code P0003 mean on the Audi A4?
Fuel Volume Regulator Control Circuit Low This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0002 mean on the Audi A4?
Fuel Volume Regulator Control Circuit Range/Performance This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0001 mean on the Audi A4?
Fuel Volume Regulator Control Circuit/Open This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
Are brakes problems common on the Audi A4?
Yes — 413 of 2775 real owner reports filed with NHTSA mention the brakes. One owner reported: “I HAD MY BRAKES AND TIRES REPLACED AND NOW THE ABS AND BRAKE LIGHT ARE ON IN THE CAR THE REAR BRAKES LOCK UP IF THE ABS AND BRAKE LIGHT GO ON ADN THE CAR CAN GET OUT OF CONTROL IN CASE OF BRAKING IN A…” See the owner-reported complaints section below for more.
Are engine problems common on the Audi A4?
Yes — 570 of 2775 real owner reports filed with NHTSA mention the engine. One owner reported: “I HAVE 1996 AUDI A4 AND EXPERIENCING THE SAME RECALL PROBLEM AS NHTSA CAMPAIGN ID NUMBER: 06V403000, WHICH IS NOT ABLE TO RETURN THE IGNITION KEY TO THE RUNNING POSITION AFTER STARTING THE ENGINE. T…” See the owner-reported complaints section below for more.
Are electrical problems common on the Audi A4?
Yes — 801 of 2775 real owner reports filed with NHTSA mention the electrical. One owner reported: “I HAVE 1996 AUDI A4 AND EXPERIENCING THE SAME RECALL PROBLEM AS NHTSA CAMPAIGN ID NUMBER: 06V403000, WHICH IS NOT ABLE TO RETURN THE IGNITION KEY TO THE RUNNING POSITION AFTER STARTING THE ENGINE. T…” See the owner-reported complaints section below for more.
What engine oil should I use on the Audi A4 (1996–2024)?
The engine oil specification for the Audi A4 (1996–2024) is Castrol Edge 0W-20. Always use the viscosity grade approved by the manufacturer: a different oil can reduce engine protection and void the warranty. Check the change interval in the Maintenance section.
Which OBD2 fault codes are commonly documented for the Audi A4 (1996–2024)?
Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.
How often should the Audi A4 (1996–2024) be serviced?
Routine maintenance for the Audi A4 (1996–2024) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.
This spec sheet is updated with data verified from OEM sources and shop databases. If you spot an inaccuracy or have additional data on the Audi A4 (1996–2024), let us know — every correction improves quality for all users.