EZ Swap LLC services the Audi S8 in Phoenix, AZ, covering model years 2007 to 2009, 2013 to 2018, 2020 to 2026. If your S8 has a warning light, a strange noise or a safety recall question, our mechanics can diagnose it and give you a clear quote first.
To help S8 owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 42 owner complaints on file for the S8 and 14 safety recall campaigns. The most-reported problem areas are engine (19), visibility (5), power train (4).
Most-Reported Audi S8 Problems
These problem areas come up most often in NHTSA owner complaints for the S8 (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 | 19 | 45% | |
| Visibility | 5 | 11% | |
| Power Train | 4 | 9% | |
| Visibility/Wiper | 3 | 7% | |
| Vehicle Speed Control | 3 | 7% | |
| Fuel/Propulsion System | 3 | 7% | |
| Electrical System | 2 | 4% | |
| Engine And Engine Cooling | 2 | 4% |
Engine
19 of the 42 complaints (45%) 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.
Visibility
5 of the 42 complaints (11%) mention lighting and visibility. Lights, wipers and visibility items are quick to fix and are on every rideshare inspection checklist. We check them as part of our inspection prep. See our rideshare inspection prep page.
Power Train
4 of the 42 complaints (9%) mention the powertrain. Powertrain complaints can range from rough shifting to loss of drive. We road test, scan for stored codes and inspect fluids before recommending any repair. See our auto repair page.
Audi S8 Complaints by Model Year
The S8 model years with the most NHTSA complaints on file are 2013, 2014, 2015. 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 | |
|---|---|---|
| 2007 | 3 | |
| 2008 | 5 | |
| 2009 | 2 | |
| 2013 | 13 | |
| 2014 | 6 | |
| 2015 | 6 | |
| 2016 | 6 | |
| 2021 | 1 |
Audi S8 Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the S8, 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 S8? 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 S8 Safety Recalls
NHTSA lists 14 recall campaigns for the S8 in these model years, most often involving back over prevention, visibility, fuel system, gasoline. 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.
- 2025 recall, Back Over Prevention (campaign 25V900000): Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended.
- 2025 recall, Electrical System (campaign 25V201000): Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 SQ8, A6 SEDAN, A7, A8, Q7, Q8, RS6 Avant, RS7, RSQ8, S6 SEDAN, S7, S8, A6 Allroad, and SQ7 vehicles. Due to a software error, the instrument panel display may fail.
- 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.
- 2022 recall, Tires (campaign 22V034000): Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5...
- 2022 recall, Back Over Prevention (campaign 22V742000): Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4...
- 2021 recall, Engine And Engine Cooling (campaign 21V111000): Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A8 and 2020-2021 Audi S8 vehicles.
Serious Incident Reports
Of the NHTSA complaints on file for the S8, 1 involved a fire. 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 S8 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 S8 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 S8 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 S8, a pre-purchase inspection shows what the paperwork does not.
Audi S8 Services at EZ Swap LLC
Get the details on our Phoenix Audi S8 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 →Rideshare Inspection Prep
Get approved for Uber, Lyft and more.
Details →Auto Repair
All makes and models, from domestic trucks to imports.
Details →Car A/C Repair
Phoenix heat demands cold air.
Details →Audi S8 FAQ
What are the most common problems with the Audi S8?
Based on NHTSA owner complaints, the most-reported problem areas for the Audi S8 are engine (19), visibility (5), power train (4). Complaint counts reflect reports filed, not the share of vehicles affected.
Which S8 model years have the most complaints?
The S8 model years with the most NHTSA complaints on file are 2013, 2014, 2015. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Audi S8?
NHTSA complaints rarely cite specific codes for the Audi S8. 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 S8 have any safety recalls?
NHTSA lists 14 recall campaigns for the Audi S8 across model years 2007 to 2009, 2013 to 2018, 2020 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 S8 in Phoenix?
Yes. EZ Swap LLC repairs and maintains Audi vehicles including the S8, 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 S8?
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 S8 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.