2004-2008 Audi A8: Reliability
Updated: 11/23/08
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Our reliability study for this generation Audi A8 includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Audi A8 .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Air conditioner:
The air conditioning may not cool sufficiently and/or the outside temperature reading may be wrong due to a poor crimp connection or faulty outside temperature sensor. (2005)
Brakes:
The ABS (anti-lock brakes) may activate unnecessarily under normal to light application due to cracks in tone wheels. (1996-05)
Engine noise:
Squealing and/or chirping from the serpentine drive belt caused by damaged upper idler pulley, which must be replaced. (2004)
Engine noise:
Poor 4.2L engine performance may be accompanied by a hissing sound caused by a vacuum leak at the intake manifold. This may require re-tightening the bolts, replacing the gasket or replacing the gasket along with applying sealer around the intake ports. (2004)
Steering problems:
The power steering may be noisy and feel like it is skipping and, if there are no leaks, the reservoir or pump may need to be replaced. (2004)
Suspension problems:
The automatic leveling system may quit working due to problems with the sensors, which may need to be replaced if they are not the latest version (having a black dot on them). (2004-05)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $1,420 |
| Alternator | $930 |
| Automatic Transmission or Transaxle | $4,130 |
| Brakes | $920 |
| Clutch, Pressure Plate, Bearing | |
| Constant Velocity Joints | $2,150 |
| Exhaust System | $1,540 |
| Radiator | $810 |
| Shocks and/or Struts | $5,550 |
| Timing Chain or Belt | $1,650 |
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