Audi A8 / S8 Audi A8 / S8

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Audi A8 / S8 repairs by problem area

Engine (30%)

Transmission and Drivetrain (2%)

Brakes and Traction Control (4%)

Suspension and Steering (19%)

Electrical and Air Conditioning (33%)

Paint, Rust, Leaks, Rattles, and Trim (2%)

Other (9%)

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Chart based on 416 repairs.
See TSBs and recalls for the Audi A8 / S8.

Audi A8 / S8 electrical repair cost distribution

$2500+ (5%)

$1000 - $2499 (14%)

$500 - $999 (10%)

$100 - $499 (34%)

< $100 (37%)

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Chart based on 121 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2015 Audi A8 / S8 4dr Sedan, ext.

turbocharged 435hp 4.0L V8 8-speed shiftable automatic AWD

31000 mi Replaced screen and assembly under warranty 

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2015 Audi A8 / S8 4dr Sedan

turbocharged 520hp 4.0L V8 8-speed shiftable automatic AWD

25000 mi Front camera, part of surround view system, is intermittently faulty. Tech diagnosed as wiring harness, but will have to return car for a day or two for them to investigate fully. 

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2014 Audi A8 / S8 4dr Sedan, ext.

supercharged 333hp 3.0L V6 8-speed shiftable automatic AWD

42100 mi Replaced door latch for soft close. 
48200 mi AC sensor was bad. 

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2014 Audi A8 / S8 4dr Sedan

turbocharged 520hp 4.0L V8 8-speed shiftable automatic AWD

39680 mi

¤200
No air venting in right passenger side 
10900 mi MMI audio module replaced. 

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2013 Audi A8 / S8 4dr Sedan, ext.

turbocharged 420hp 4.0L V8 8-speed shiftable automatic AWD

9000 mi

US $3500
check engine light passenger side window regulator replaced 
14700 mi

US $8000
Compressor clutch replaced, wire harness replaced 
23900 mi

US $766
Driver side seat heater failure- switch replaced 
21000 mi

US $192
Run codes for check engine light. Cannot diagnose. Computer reset. 

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2013 Audi A8 / S8 4dr Sedan

supercharged 333hp 3.0L V6 8-speed shiftable automatic AWD

58900 mi

C $50
Mmi wire broken 
78740 mi

C $1200
Replace battery 
79980 mi

C $2500
MMI gears changed 
84196 mi

C $325
Intermittent wipers repaired 

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2012 Audi A8 4dr Sedan, ext.

372-horsepower 4.2L V8 8-speed shiftable automatic AWD

52200 mi Electric sunshades stuck 
70000 mi

US $369
ACC Brake guard system out of order. Needed to be realligned 

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2011 Audi A8 4dr Sedan, ext.

372-horsepower 4.2L V8 8-speed shiftable automatic AWD

47000 mi Heating uneven and temperature control not working properly. Dealer replaced vent housing and solenoid valve 

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2011 Audi A8 4dr Sedan

372-horsepower 4.2L V8 8-speed shiftable automatic AWD

97000 mi

US $1200
Auto leveling fault in left head light 
69400 mi Backup camera replacement 

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2009 Audi A8 / S8 4dr Sedan

350-horsepower 4.2L V8 6-speed shiftable automatic AWD

620 mi Adaptive headlight relay replaced 

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2007 Audi A8 / S8 4dr Sedan, ext.

350-horsepower 4.2L V8 6-speed shiftable automatic AWD

76500 mi bulb out 
99200 mi Car had begun doing strange things of an electrical nature. In retrospect, it was attempting to compensate for decline in battery strength. They diagnosed and replaced battery 
95800 mi

US $1450
Battery failed, replaced 
51000 mi

US $1200
Headlight and tail light. 
100000 mi

US $424
replace battery 
128960 mi

C $2000
New starter 
135160 mi

C $360
new battery replaced 

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2007 Audi A8 / S8 4dr Sedan

450-horsepower 5.2L V10 6-speed shiftable automatic AWD

60000 mi Battery which was less than 10 months old needed replacement. Bad cells was diagnosis 
71000 mi

US $100
Trunk Motor Front Right TPMS 
58280 mi

C $550
MMI screen mechanism failed. 
60140 mi

C $200
Bluetooth module stopped working 
300 mi Power close on trunk intermttently not fully closing. 

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2007 Audi A8 / S8 4dr Sedan

350-horsepower 4.2L V8 6-speed shiftable automatic AWD

56200 mi

US $1200
MMI had broken gear, would not come up all the way or close all the way. Made a clicking sound. 
68000 mi

US $150
The electric trunk opening motor would not function correctly. I bought a used '08 trunk motor that is an upgrade from the previous models. Installed it myself. 
31000 mi

US $192
Trunk motor replacement  Window regulator MMI panel replacement- bad FM/AM button 
35400 mi

US $100
Long crank no start, replaced fuel pump,car stalled a day later, replaced starter relays, car stalled a third time replaced starter and relays again bc they burnt out. 
41000 mi

US $100
Replaced B&O tweeter Trunk motor replaced Brake light fault code, inner rear LED tail light faulty. 
47000 mi

US $100
Dealer stated MAF sensor was defective, causing the car to stall out and not restart. 
Troubleshoot vehicle lockup 
Troubleshoot electrical problem leading to vehicle lockup. 
Fix vehicle lockup; tighten bolt 
70500 mi

US $1600
TPMS monitor for 2 tires needed to replaced 
152000 mi

US $30
Brake light switch replaced to cure ABS/traction control malfunction and brake lights turning on by themselves during extremely cold weather 

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2006 Audi A8

Engine not specified

54560 mi

$200
Rear parking brake buzzer died, GOT replacement. 
64000 mi

US $400
power trunk opener failed to raise trunk lid on its own. Lubricated hinge. 
71000 mi

US $85
Power trunk motor failed and replaced. 
79000 mi electric power trunk closure stopped working properly, brought car to dealer - dealer could not find problem. Trunk mysteriously operates properly again. 

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2006 Audi A8 4dr Sedan, ext.

330-horsepower 4.2L V8 6-speed shiftable automatic AWD

56000 mi

US $85
Tire pressure valve system. Three out of 5 (includes spare) reported failure. Still under extended warranty. This would have been$225.00 per valve replacement.Senders to Computer reports on dash until al are fixed.. 
83000 mi

US $1500
Headlight motion 
72000 mi

US $3600
Front passenger directional light motor needed to be replaced. drain tubes where clogged 
58000 mi

US $49
Air Bag light came on. They found a loose connection under the drivers seat and repaired it. In a second attempt replaced the airbag. 
60000 mi

US $489
3rd repair trying to determine why AIRBAG light comes on. This time they replaced a wiring harness 
63000 mi

US $491
another wiring harness was replaced and that solved the issue automatic trunk would no longer open itself. I purchased and installed new struts, but that did not fix the issue. Dealer installed a new motor and the trunk works properly again. 
72725 mi

US $424
Driver's door autoclose was not working. Dealer replace door latch 
77100 mi

US $175
My wife hit a big pot hole and in addition to bending a rim, a gear in the MMI mechanism broke. I removed the mechanism, sent it to an individual for repair (Audi only replaces them) and reinstalled it. 
120000 mi

US $200
A/C has intermittently been failing. Despite tested and recharge, but doesn't know the underlying cause 
113500 mi Replaced burned out bulb 
48360 mi

C $85
A/C was not cooling properly. Due to time and age system had to be recharged. This process solved the problem. 
65100 mi

C $150
Replace one of the horns 
79280 mi

C $335
Power Trunk was attempting to open but would fail and drop down closed after lifting a 1/2 inch. Changed Trunk lid struts. Did not fix the problem. Trunk did lift easier when doing manually but still will try to open but not. 

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2006 Audi A8 4dr Sedan

330-horsepower 4.2L V8 6-speed shiftable automatic AWD

170000 mi

US $250
Fan Blower Replaced 
41000 mi Airbag repair. 
45000 mi Airbag repair. 
52000 mi Rear sunscreen replaced. Airbag repair. Front windshield system repaired. Trim replaced. Middle armrest replaced. 

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2006 Audi A8 4-door

turbocharged 8-cylinder diesel automatic AWD

93080 mi

$60
Had to recharge the AC, cost me about 60EUR and seems to have fixed the problem permanently. 
112220 mi Speedometer stopped working. Intermittent 

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2005 Audi A8 4dr Sedan, ext.

450-horsepower 6.0L W12 6-speed shiftable automatic AWD

89000 mi

US $2500
My MMI went out. Had to install new MMI brain. 
99820 mi

C $1500
J518 acc/start auth module defective. (integrates the immobilizer system function and steering wheel lock mechanism). I was lucky it started, I was about to tow it. Problem was caused by a drain clog in the firewall. Water accumulated under the carpet and entered the access start module, creating corrosion. Module had to be replaced.  

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2005 Audi A8 4dr Sedan, ext.

330-horsepower 4.2L V8 6-speed shiftable automatic AWD

66824 mi

US $745
Driver window does not go full-down automatically when switch is pushed to 2nd click. Replaced master window switch assembly. Steering wheel MMI controls not working. Replaced shorted steering wheel MMI control switch  
110000 mi

US $400
Passenger side back-up light Bulb alone $40+ 
135000 mi

US $500
Headlights work intermittent. Dealership can not find a problem. Headlamps turn off while driving will not come back on. Wires connecting rear air big sensor failed 
127700 mi

US $1100
Headlights become too dim at night to be able to drive after dark. Dealer quoted $4,000 to fix! Found replacement Hella units for $900 at carid.com, labor to install at Body Ship $200.  
104000 mi

US $800
stuck heater control valve 
134000 mi

US $250
heater fan sporadically failed. regulator replaced. 
141000 mi

US $175
mmi screen hung up 
147000 mi

US $450
heater fan malfunction 
47000 mi

US $108
Tire pressure monitor failed. Sensor replaced. The entire unit must be replaced (about $200 each) after ~5 years. Stupid!! The lithium battery is identical to the cheap units in my watch. 
61200 mi

US $40
Brake light switch faulty, replaced. 
105700 mi

US $400
105,000 Service-Audio and MMI are not working properly. Dealer has not been able to diagnose or find problem. 
109000 mi Two year old battery was replaced; battery control module was updated along with an MMI Zug update. Some MMI problems were solved but other problems in multifunction steering wheel cropped up. None of the controls on the multifunction work. I am waiting for steering wheel parts to come in. 
69000 mi

US $600
Both MMI and GPS units replaced. 
59693 mi

US $84
REPLACE INSTRUMENT CLUSTER (84) (Burned out dash lights across middle of dash) WARRANTY DID NOT COVER 
75000 mi

US $100
TRUNK MOTOR FOR "PULL & SEAL", $100 INSURANCE DEDUCTABLE 
87000 mi

US $100
BLOWER MOTOR REPLACED FOR A/C $641 (PARTS 299 LABOR 342) ONE WINDOW REGULATOR ASSEMBLY REPLACED $437 (PARTS 272 LABOR 165) 
87800 mi

US $479
HEADLIGHT SWITCH REPLACED PARTS 250 LABOR 82 INSURANCE DEDUCTABLE 100 INSURANCE PAID 232 
92300 mi

US $1182
REPLACED HEADLAMP 
95300 mi

US $310
right front xenon headlamp replaced. 
99000 mi

US $300
left front xenon low beam bulb 
112000 mi

US $800
started motor solenoid - once engine was warm it would not start - ended up replacing motor - which is complex since access meant engine support submember needed removal 
96100 mi

US $6000
Soft close door modules failed in the back, on both sides. 
153000 mi

US $362
Driver headlight went out. Replaced element, still out. Replaced module, still out. Replaced ballast (exciter), worked. 
158000 mi

US $700
Also $200 to replace evaporator drain tubes, which had clogged. 
163000 mi

US $1000
Alternator went out. Water cooled alternator purchased from Audi dealer($605) 3 hours labor. Also had oil change at same time. 

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2005 Audi A8 4dr Sedan

330-horsepower 4.2L V8 6-speed shiftable automatic AWD

91000 mi TPMS sensors failed twice. Currently functioning. Dealer said TPMS batteries failed. Will replace for $50 under CPO warranty. 
96700 mi

US $50
Replaced all five sensors. 
89000 mi

US $50
Dealer Left Clean Air Sensor detached 
67000 mi

US $675
Fully replace MMI screen mount due to failure to open and close correctly. Gears broken and switch that controls the start and stop of MMI motor faulty. Total cost including labor. 
110000 mi

US $250
Battery was weak. 
88000 mi

US $340
Tire Pressure monitor fault. System antenna replaced; however problem still exists 
93000 mi

US $300
Outer driver door handle replaced -lock button failed and could not lock the car using the keyless system Had tire pressure monitoring system disabled. Complete repair would cost up to $1,500 so had mechanic disable the system 
96000 mi

US $40
MMI system would not work and system could not be re-booted. Technician found a stuck button on the MMI controller 
81500 mi Warning light for seat belt. Left rear seat belt tensioner igniter fault. Replaced left rear seat belt assembly. 
111000 mi

US $2395
MMI display gear stripped. Qouted $960 to fix. I declined. Found replacement gear on internet, will do myself. TPMS system malfunction. TPMS sensors in wheels need to be replaced. Estimated cost $850. Found TPMS units on web for $46 each. Will have tire store replace. 
111300 mi

US $200
TPMS sensors replaced. 
119000 mi

US $1386
Check eng. light on. Was alternator problem. Need new WATER COOLED alternator Nav display making clunking noise on way up and way down. I bought a new gear on the internet for about $15. Repair took about 3 hours. Followed directions from the internet. Everything works great now. 

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2004 Audi A8 4dr Sedan, ext.

330-horsepower 4.2L V8 6-speed shiftable automatic AWD

94000 mi Infotainment system cutting in and out. 
37700 mi TPMS tire pressure monitoring system malfunction. Dealer replaced three sensors under warranty. Purchased car used Oct.14 and car came with NY stater Lemon Law warranty so all issues are covered for thirty days through the dealer. 
43000 mi

US $600
Had Water temperature sending unit replaced and cooling system evacuated. Performed this service in conjunction with 45K mile service. 
144000 mi

US $100
Passenger headlight out. 
102300 mi

C $40
Backup light but took 1.5 hours to diagnose get part and replace. Bulb comes as a module. Garage didnt charge labour! 
105000 mi

US $600
Replaced parking sensor Replaced parking light 
185000 mi Starter was acting intermittently. Diagnostics indicated faulty starter. I had an indy shop replace it as I did not have the time to do it myself. 
63828 mi

US $93
Airbag light on. Driver knee airbags removed. Connection under driver's seat replaced. 
77838 mi

US $903
MMI buttons stuck. Possible leak into unit. MMI control module replaced. 
48000 mi

US $1658
Replaced Compressor, filter dryer, and hoses 
130000 mi

US $100
Replace the blower fan. 
145000 mi

US $1200
While in the shop, the starter failed and needed replacement. 
157000 mi New battery installed at time of purchase 
171000 mi

US $20
ventilation fan motor stopped 
174000 mi

US $100
blower control intermittent... replaced with used unit 
101600 mi

US $150
Warning lights on dash on initial startup. Battery control shutdown systems so car would start and keep running. Car was still dependable but minor systems like mmi display, auto headlights, garage opener etc would not operate until recharge 

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2000 Audi A8 4dr Sedan

310-horsepower 4.2L V8 5-speed shiftable automatic AWD

177000 mi

US $60
Recharged the AC regfrigerant. 

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1999 Audi A8 / S8 4-door

8-cylinder automatic AWD

158720 mi

C $3000
AC compressor failed, needed to be replaced. An operational AC compressor is required for the defogging / defrosting of the windshield, windows and rear window, so even in the cold, working AC is required if you want to be able to see where you are going. 

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Audi A8 / S8 Electrical Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently Audi A8 / S8 problems occur, check out our car reliability stats.