YearToAvoid

2005 Audi A4 Reliability Data: Problems & Recalls

Avoid The 2005 Audi A4 ranks 5th worst out of 20 model years, with a Complaint Index of 79 and 219 NHTSA complaints, earning an Avoid verdict. Electrical system issues (50% of complaints) and airbag non-deployment (25%) are the biggest concerns, backed by 3 recall campaigns.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
79/100
#5 of 20 A4 years
Verdict
Avoid
vs. other years of this model
Complaints
219
unique NHTSA reports
Recalls
3
distinct NHTSA campaigns
Crashes
7
reported in complaints
Fires
3
Injuries
8
Top issue
Electrical System
Best nearby year
2011
rated Best
NHTSA overall rating
Not rated
EPA combined MPG
22
19 city / 27 hwy
Injuries / deaths
8 / 0

Top 2005 Audi A4 problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Electrical System109 (50%)
  2. Airbags54 (25%)
  3. Engine24 (11%)
  4. Transmission & Powertrain16 (7%)
  5. Fuel System12 (5%)
  6. Steering6 (3%)
  7. Structure & Body6 (3%)
  8. Suspension, Wheels & Tires6 (3%)
  9. Visibility & Wipers5 (2%)
  10. Brakes4 (2%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Airbags fail to deploy in low-speed frontal or side collisions, sometimes resulting in injuries.
  • Electrical wiring or components have caught fire, including a case where the car ignited while parked and off.
  • Engine surges or bogs unpredictably during acceleration, sometimes paired with a loss of power steering assist.
  • Brake failure has occurred at low speed after warning lights for airbag and brake systems appeared.
  • Airbag warning lights stay illuminated, requiring repeated dealer visits to replace the sensor.
  • Transmission hesitates for several seconds when accelerating from a stop, creating a collision risk.
2005 Audi A4 complaints: complaints filed per quarter232004 Q42007 Q22009 Q42011 Q42013 Q42015 Q42017 Q42023 Q4
219 complaints filed with NHTSA from 2004 Q4 to 2026 Q2; peak 2010 Q4 (23).

2005 Audi A4 recalls

3 NHTSA recall campaigns list this model year.

  1. NHTSA 18V427000Jun 22, 2018Airbags237,947 vehicles

    Air bags:frontal:passenger side:inflator module

    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. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

    Risk: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

    Remedy: Audi has notified owners, and dealers will replace the passenger frontal air bag with an alternate remedy part, free of charge. The recall began June 29, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 69R7. Note: This recall supersedes recalls 16V382, 17V032 and 18V004 and includes vehicles that may have had their air bag previously replaced under one of those campaigns.

  2. NHTSA 17V032000Jan 11, 2017Airbags33,421 vehicles

    Air bags:frontal:passenger side:inflator module

    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, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Additionally, unless included in "Zone B" above, Volkswagen is recalling certain 2005-2008 Audi A4 Avant, A4 Sedan, A6 Sedan, S4 Avant and S4 Sedan vehicles, 2007-2008 A4 Cabriolet, RS4 Sedan, S4 Cabriolet and S6 Sedan vehicles, and 2006-2008 A6 Avant and 2008 RS4 Cabriolet vehicles originally sold, or ever registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

    Risk: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.

    Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began March 30, 2018. Owners may contact Audi customer service at 1-800-253-2834. Note: This recall has been superseded by recall number 18V427.

  3. NHTSA 16V382000Jun 1, 2016Airbags194,453 vehicles

    Air bags:frontal:passenger side:inflator module

    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, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above, Volkswagen is recalling certain model year 2004-2008 Audi A4, and 2005-2008 Audi A6 vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Lastly, unless included in "Zone A" or "Zone B" above, Volkswagen is recalling model year 2004 Audi A4 vehicles originally sold, or registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

    Risk: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.

    Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. Owner notification letters were mailed April 28, 2017. Owners may contact Audi customer service at 1-800-822-2834.

2005 Audi A4 fuel economy and fuel cost

City
19 MPG
Highway
27 MPG
Combined
22 MPG
Annual fuel cost (EPA)
$3,650
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2005 compared with other A4 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’05’06’07’08’09’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2005Avoid79219322
2006Avoid100295322
2007Caution74196322

All Audi A4 years: best and worst →

Frequently asked questions

Is the 2005 Audi A4 reliable?
Based on NHTSA complaints and recalls, the 2005 A4 has a Complaint Index of 79 and ranks 5th worst among 20 model years, so it carries an Avoid verdict relative to other A4 years.
What is the most common problem with the 2005 Audi A4?
Electrical system complaints make up 50% of all reports (109 of 219), including several fires, with a median failure mileage of 59,000 miles.
Does the 2005 Audi A4 have an airbag recall?
Yes. NHTSA lists three recall campaigns affecting the 2005 A4, all involving the airbags, including passenger frontal air bag inflator and frame replacement remedies.
What year Audi A4 should I avoid?
Among A4 years, 2006 has the highest Complaint Index at 100, followed by 2020 at 95, 2009 at 89, and 2005 and 2008 at 79 and 84; years from 2011 to 2016 and 2022 score much lower and earn Best or Good verdicts.
How many complaints does NHTSA have on file for the 2005 Audi A4?
NHTSA lists 219 complaints for the 2005 Audi A4, including 7 crashes, 3 fires, and 8 injuries, with no reported deaths.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.