RoadVitals

2008 Audi A5 Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
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Latest Apr 15, 2026
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2008 Audi A5, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Airbags228.6%
  • Brakes228.6%
  • Electrical228.6%
  • Exterior lighting114.3%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Airbags

Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.

2
reports

From owner reports, verbatim

TAKATA RECALL ON MAY 23, 2016, MY AUDI A5 WAS RECALLED. SAFETY RISK WAS CLAIMED TO BE "IF THE AIRBAG CONTROL UNIT FAILS, SAFETY SYSTEMS SUCH AS SEAT BELT PRETENSIONERS AND AIRBAGS MAY NOT DEPLOY IN THE EVENT OF A CRASH, INCREASING THE RISK OF OCCUPANT INJURY." 6 MONTHS LATER, THE RECALL IS "INCOMPLETE. REMEDY NOT YET AVAILABLE" I AM TRYING TO TRADE IN MY VEHICLE, BUT THE DEALER SAYS THE LACK OF RECALL FIX WILL NEGATIVELY IMPACT THE VALUE OF THE VEHICLE.

NHTSA ID 10918080 · filed Oct 22, 2016

TL* THE CONTACT OWNS A 2008 AUDI A5. THE CONTACT STATED THAT THE DRIVER'S SIDE AIR BAG SENSOR AND THE PARKING BRAKE WARNING LIGHT WAS ILLUMINATED. IN ADDITION, THE HORN HAD FAILED. THE VEHICLE WAS DIAGNOSED BY AN INDEPENDENT MECHANIC, WHO DETERMINED THAT THE DEFECTS WERE ALL CAUSED BY A FAULTY STEERING WHEEL SPRING COLUMN. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 35,000.

NHTSA ID 10563988 · filed Feb 12, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

2
reports

From owner reports, verbatim

2008 Audi A5 3.2L S-Line Coupe experiencing severe water intrusion into trunk compartment causing progressive failure of multiple electronic modules. Water enters through a known design defect in the trunk seal and drainage pathway, pooling in the spare tire well where critical electronic control modules are mounted. Affected systems: (1) Complete audio and entertainment system failure due to amplifier module destroyed by water damage. (2) Electronic parking brake malfunction with brake failing to engage and disengage reliably, creating serious rollaway risk on inclines. (3) General electrical instability with intermittent warning lights and system malfunctions. (4) Severe parasitic battery drain with vehicle battery draining overnight due to water-damaged modules drawing constant current. This is a well-documented design flaw across the entire B8 A5 and S5 platform from 2008 to 2013. The manufacturer engineered a protective cover part for later production models, confirming awareness of the water intrusion defect, but never issued a recall or retrofit for earlier vehicles. Hundreds of owners have reported identical failures on major Audi enthusiast forums. The electronic parking brake failure is a serious safety hazard as the vehicle may roll uncontrolled on grades when parked.

NHTSA ID 11731285 · filed Apr 15, 2026

TL* THE CONTACT OWNS A 2008 AUDI A5. THE CONTACT STATED THAT THE DRIVER'S SIDE AIR BAG SENSOR AND THE PARKING BRAKE WARNING LIGHT WAS ILLUMINATED. IN ADDITION, THE HORN HAD FAILED. THE VEHICLE WAS DIAGNOSED BY AN INDEPENDENT MECHANIC, WHO DETERMINED THAT THE DEFECTS WERE ALL CAUSED BY A FAULTY STEERING WHEEL SPRING COLUMN. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 35,000.

NHTSA ID 10563988 · filed Feb 12, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

2
reports

From owner reports, verbatim

2008 Audi A5 3.2L S-Line Coupe experiencing severe water intrusion into trunk compartment causing progressive failure of multiple electronic modules. Water enters through a known design defect in the trunk seal and drainage pathway, pooling in the spare tire well where critical electronic control modules are mounted. Affected systems: (1) Complete audio and entertainment system failure due to amplifier module destroyed by water damage. (2) Electronic parking brake malfunction with brake failing to engage and disengage reliably, creating serious rollaway risk on inclines. (3) General electrical instability with intermittent warning lights and system malfunctions. (4) Severe parasitic battery drain with vehicle battery draining overnight due to water-damaged modules drawing constant current. This is a well-documented design flaw across the entire B8 A5 and S5 platform from 2008 to 2013. The manufacturer engineered a protective cover part for later production models, confirming awareness of the water intrusion defect, but never issued a recall or retrofit for earlier vehicles. Hundreds of owners have reported identical failures on major Audi enthusiast forums. The electronic parking brake failure is a serious safety hazard as the vehicle may roll uncontrolled on grades when parked.

NHTSA ID 11731285 · filed Apr 15, 2026

TL* THE CONTACT OWNS A 2008 AUDI A5. THE CONTACT STATED THAT THE DRIVER'S SIDE AIR BAG SENSOR AND THE PARKING BRAKE WARNING LIGHT WAS ILLUMINATED. IN ADDITION, THE HORN HAD FAILED. THE VEHICLE WAS DIAGNOSED BY AN INDEPENDENT MECHANIC, WHO DETERMINED THAT THE DEFECTS WERE ALL CAUSED BY A FAULTY STEERING WHEEL SPRING COLUMN. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 35,000.

NHTSA ID 10563988 · filed Feb 12, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Exterior lighting

Reports naming headlights, tail lights, turn signals and other exterior lighting.

1
report

From owner reports, verbatim

MAIN BEAM/LEFT DIPPED HEADLIGHT WARNING CAME ON. SECOND TIME DEALING WITH THIS PROBLEM AND HAVE READ THAT AUDIS ARE NOTORIOUS FOR THE SAME ISSUE BUT NOTHING HAS BEEN DONE TO CORRECT IT. HAVING BULB REPLACED IS COSTING 360.00 AT THE AUDI SERVICE DEPARTMENT. SOMETHING MUST BE DONE TO RECTIFY THIS PROBLEM. A FACTORY RECALL SHOULD BE ORDERED. THANK YOU *TR

NHTSA ID 10546793 · filed Oct 4, 2013

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .