Showing the 2006 A8 4WD: as EPA lists it. Recalls and complaints cover the whole model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
18 mpgcombined; city 16, highway 22; the 4WD
Five years of fuel
$22,360U.S. average; Ohio $21,070 at local prices; the 4WD; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
NHTSA's VIN data lists no trims for the 2006 A8, so these are the versions EPA tested, by its names. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 6 complaints with NHTSA about the 2006 A8. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Vehicle speed control
3
0
0
0
Electrical system
2
0
0
0
Exterior lighting
1
0
0
0
Fuel system, gasoline
1
0
0
0
Latches/locks/linkages
1
0
0
0
Structure
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 2 recall campaigns for the 2006 A8 over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
ON CERTAIN VEHICLES WHERE A WEAK BATTERY EXISTS, IT IS POSSIBLE THAT A LOW VOLTAGE CONDITION COULD CAUSE THE AIR BAG CONTROL UNIT TO IMPROPERLY SET A FAULT CODE. IF THIS OCCURS, THE PASSENGER SIDE FRONTAL AIR BAG WILL BECOME DEACTIVATED. HOWEVER, BOTH THE AIR BAG WARNING LIGHT IN THE INSTRUMENT CLUSTER AS WELL AS THE 'PASSENGER AIR BAG OFF' TELLTALE IN THE CENTER OF THE INSTRUMENT PANEL WILL ILLUMINATE AND PROVIDE VISUAL WARNING TO THE DRIVER.
Risk: IF THE CASE OF A FRONTAL CRASH, THE PASSENGER SIDE FRONT AIR BAG WOULD NOT DEPLOY WHICH COULD CAUSE INJURY TO THE SEAT OCCUPANT.
Remedy: DEALERS WILL UPDATE THE AIR BAG CONTROL MODULE SOFTWARE. THE RECALL BEGAN ON DECEMBER 5, 2006. OWNERS MAY CONTACT AUDI AT 1-800-822-2834.
ON CERTAIN PASSENGER VEHICLES, A WIRING HARNESS CONDITION EXISTS THAT MAY DEACTIVATE THE PASSENGER SIDE FRONTAL AIR BAG EVEN UNDER CIRCUMSTANCES WHEN IT SHOULD REMAIN ACTIVATED.
Risk: IF THIS CONDITION OCCURS, BOTH THE AIR BAG WARNING LIGHT IN THE INSTRUMENT CLUSTER AND THE "PASSENGER AIR BAG OFF" TELLTALE IN THE CENTER OF THE INSTRUMENT PANEL WILL PROPERLY ILLUMINATE. CONSEQUENTLY, THE PASSENGER SIDE FRONTAL AIR BAG WOULD NOT DEPLOY IN THE CASE OF A FRONTAL CRASH.
Remedy: DEALERS WILL MODIFY THE WIRING HARNESS FREE OF CHARGE. THE RECALL BEGAN ON NOVEMBER 30, 2005. OWNERS MAY CONTACT AUDI AT 1-800-822-2834.
Carmakers sent NHTSA 277 service bulletins and notices that cover the 2006 A8, the latest on Oct 4, 2023. They tell dealers how to fix known issues.
The parts they mention most: equipment (88), electrical system (58), engine and engine cooling (28), suspension (23), fuel system (20).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2006 A8.
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data