YearToAvoid

2005 Audi A8 Reliability Data: Problems & Recalls

Good The 2005 Audi A8 has a Good verdict with a complaint index of 40, ranking 13th among 21 model years. NHTSA lists 6 complaints, 1 recall, and 1 fire report, with the Engine area making up 67% of complaints.

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

YearToAvoid Scorecard

Complaint Index
40/100
#13 of 21 A8 years
Verdict
Good
vs. other years of this model
Complaints
6
unique NHTSA reports
Recalls
1
distinct NHTSA campaigns
Crashes
0
reported in complaints
Fires
1
Injuries
0
Top issue
Engine
Best nearby year
2006
rated Good
NHTSA overall rating
Not rated
EPA combined MPG
18
16 city / 22 hwy
Injuries / deaths
0 / 0

Top 2005 Audi A8 problems

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

  1. Engine4 (67%)
  2. Other2 (33%)
  3. Structure & Body2 (33%)
  4. Brakes1 (17%)
  5. Electrical System1 (17%)
  6. Suspension, Wheels & Tires1 (17%)

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

What owners report

  • Engine compartment fires reported, with one case tracing to overfueling in two cylinders that damaged the catalytic converter.
  • Unintended acceleration reported, with the vehicle continuing to speed up after the accelerator pedal was released until the brake was applied.
  • Steering wheel locking up combined with the emergency brake engaging and dashboard warning lights illuminating, traced to liquid spilled in the back seat affecting the computer system.
  • Cruise control failing with an audible bell sound, requiring multiple dealer visits without the cause being identified.
  • An adaptive module failure reported that owners say caused the brakes to seize while the vehicle was moving.
2005 Audi A8 complaints: complaints filed per month1Mar 2006Sep 2006Jan 2007Apr 2007Jan 2010Jun 2014
6 complaints filed with NHTSA from Mar 2006 to Jun 2014; peak Mar 2006 (1).

2005 Audi A8 recalls

1 NHTSA recall campaign list this model year.

  1. NHTSA 06V324000Aug 31, 2006Airbags7,674 vehicles

    Air bags:frontal

    On certain passenger vehicles, during production of the driver's frontal air bag, the air bag may not unfold properly in the event of a crash and therefore may not inflate as designed.

    Risk: Loss of frontal air bag deployment could occur which can increase the risk of injury in a frontal crash.

    Remedy: Dealers will install a new driver's frontal air bag free of charge. The recall began on october 6, 2006. Owners may contact audi at 1-800-822-2834.

2005 Audi A8 fuel economy and fuel cost

City
16 MPG
Highway
22 MPG
Combined
18 MPG
Annual fuel cost (EPA)
$4,450
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 A8 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’05’06’07’08’09’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2005Good406118
2006Good356218
2007No verdict304218

All Audi A8 years: best and worst →

Frequently asked questions

Is the 2005 Audi A8 reliable?
NHTSA data gives the 2005 A8 a Good verdict relative to other A8 model years, with a complaint index of 40 and only 6 complaints logged.
What are the most common problems with the 2005 Audi A8?
Engine problems dominate, making up 67% of complaints, including a reported engine compartment fire. Structure & Body issues account for another 33%.
Does the 2005 Audi A8 have any recalls?
Yes, NHTSA lists 1 recall for the 2005 A8, covering a driver's frontal airbag that may not inflate properly in a crash.
How does the 2005 Audi A8 compare to other A8 years?
The 2005 A8 ranks 13th worst out of 21 model years by complaint index, well below higher-complaint years like 2013 (index 100) and 2011 (index 80).
What is the fuel economy of the 2005 Audi A8?
The 2005 A8 is EPA-rated at 18 mpg combined (16 city / 22 highway), with an estimated annual fuel cost of $4,450.

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.