Own a Audi A8 in the Phoenix area? EZ Swap LLC repairs and maintains the Audi A8 for model years 2005 to 2019, 2022 to 2026. Our shop at 9050 N 9th St handles everything from routine service to diagnostics and major repairs.
To help A8 owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 182 owner complaints on file for the A8 and 11 safety recall campaigns. The most-reported problem areas are engine (89), electrical system (23), vehicle speed control (14).
Most-Reported Audi A8 Problems
These problem areas come up most often in NHTSA owner complaints for the A8 (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Engine | 89 | 48% | |
| Electrical System | 23 | 12% | |
| Vehicle Speed Control | 14 | 7% | |
| Fuel/Propulsion System | 14 | 7% | |
| Power Train | 12 | 6% | |
| Service Brakes | 12 | 6% | |
| Structure | 8 | 4% | |
| Suspension | 8 | 4% |
Engine
89 of the 182 complaints (48%) mention the engine and cooling system. Engine and cooling complaints are best caught early in Phoenix, where heat pushes cooling systems and engine oil to their limits. We diagnose warning lights and check coolant, hoses and oil condition. See our check engine light diagnostics and oil change & maintenance pages.
Electrical System
23 of the 182 complaints (12%) mention the electrical system. Electrical problems are made worse by desert heat, which ages batteries, cables and connectors. We test the battery, starter and charging system and trace faults to the actual part. See our battery replacement and starter & alternator repair pages.
Vehicle Speed Control
14 of the 182 complaints (7%) mention vehicle speed control (throttle and cruise control). Speed control complaints involve the throttle, cruise control and related sensors. We scan for stored codes and test the throttle system and sensors to find the actual cause instead of guessing. See our check engine light diagnostics and auto repair pages.
Audi A8 Complaints by Model Year
The A8 model years with the most NHTSA complaints on file are 2013, 2015, 2014. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2005 | 6 | |
| 2006 | 6 | |
| 2007 | 4 | |
| 2008 | 8 | |
| 2009 | 5 | |
| 2010 | 1 | |
| 2011 | 15 | |
| 2012 | 11 | |
| 2013 | 49 | |
| 2014 | 18 | |
| 2015 | 31 | |
| 2016 | 10 | |
| 2017 | 6 | |
| 2019 | 12 |
Audi A8 Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the A8, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Audi.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your A8? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Audi A8 Safety Recalls
NHTSA lists 11 recall campaigns for the A8 in these model years, most often involving air bags, fuel system, gasoline, visibility. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2022 recall, Engine And Engine Cooling (campaign 22V178000): Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the bearings due to lack of lubrication.
- 2020 recall, Structure (campaign 20V397000): Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S8 and A8 vehicles. The seal around the engine compartment may come loose and contact hot engine components.
- 2019 recall, Fuel System, Gasoline (campaign 19V057000): Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2016 Audi A8 and S8 vehicles. The fuel supply line for the high pressure fuel pump may become porous and leak fuel.
- 2019 recall, Fuel System, Gasoline (campaign 19V035000): Volkswagen Group of America, Inc. (Audi) is recalling certain 2016-2018 Q7, A6 and A7 vehicles, and 2015-2018 Audi A8 vehicles. The left and right fuel rails may leak fuel.
- 2018 recall, Fuel System, Gasoline (campaign 18V430000): Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2015 Audi S8 and A8 vehicles. The fuel supply line for the high pressure fuel pump may become porous over time, resulting in a fuel leak.
- 2016 recall, Visibility (campaign 16V415000): Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2007-2009 Audi A8 and S8 vehicles. The sunroof glass on the affected vehicles may not be properly secured to the sunroof frame.
Serious Incident Reports
Of the NHTSA complaints on file for the A8, 6 involved a crash, 1 involved a fire, 1 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Audi A8 Reliable in Phoenix
Arizona heat is the hardest test a Audi will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a A8 that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for A8 owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Audi A8, a pre-purchase inspection shows what the paperwork does not.
Audi A8 Services at EZ Swap LLC
Get the details on our Phoenix Audi A8 repair service, or choose a service below.
Check Engine Light Diagnostics
Scan, test and pinpoint the real cause.
Details →Oil Change & Maintenance
Oil, filters, fluids, tires and scheduled service.
Details →Battery Replacement
Test, replace and protect against Phoenix heat.
Details →Starter & Alternator Repair
Charging and starting system repair.
Details →Auto Repair
All makes and models, from domestic trucks to imports.
Details →Audi A8 FAQ
What are the most common problems with the Audi A8?
Based on NHTSA owner complaints, the most-reported problem areas for the Audi A8 are engine (89), electrical system (23), vehicle speed control (14). Complaint counts reflect reports filed, not the share of vehicles affected.
Which A8 model years have the most complaints?
The A8 model years with the most NHTSA complaints on file are 2013, 2015, 2014. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Audi A8?
NHTSA complaints rarely cite specific codes for the Audi A8. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Audi A8 have any safety recalls?
NHTSA lists 11 recall campaigns for the Audi A8 across model years 2005 to 2019, 2022 to 2026. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Audi A8 in Phoenix?
Yes. EZ Swap LLC repairs and maintains Audi vehicles including the A8, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Audi A8?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Audi A8 in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Audi Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.