| 1 | 0 | 3 | 4 | 3 | 4 |
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%)
Chart based on 416 repairs.
Audi A8 / S8 engine repair cost distribution
$2500+ (14%)
$1000 - $2499 (20%)
$500 - $999 (17%)
$100 - $499 (28%)
< $100 (21%)
Chart based on 109 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2014 Audi A8 / S8 4dr Sedan, ext.
supercharged 333hp 3.0L V6 8-speed shiftable automatic AWD
| 48000 mi | oil cooler leaked, replaced seal |
2014 Audi A8 / S8 4dr Sedan
turbocharged 520hp 4.0L V8 8-speed shiftable automatic AWD
| 58280 mi ¤4000 |
Malfunction in air intake system |
2013 Audi A8 / S8 4dr Sedan, ext.
turbocharged 420hp 4.0L V8 8-speed shiftable automatic AWD
| 21000 mi US $192 |
Blower motor complete failure. Replaced. 3 days at dealer. Excessive engine oil loss. Dealer cannot find any faults at this time. Engine oil and filter changed. Logging details to monitor further oil loss. |
2012 Audi A8 4dr Sedan, ext.
372-horsepower 4.2L V8 8-speed shiftable automatic AWD
| 52987 mi | Intake air valve leaking and whistling |
| 104000 mi US $1100 |
Check Engine Light came on. Took the vehicle to an Audi Dealer and the service tech ran a diagnostic on it. Results showed the PCV Valve was bad and needed to be replaced. |
2011 Audi A8 4dr Sedan, ext.
372-horsepower 4.2L V8 8-speed shiftable automatic AWD
| 68700 mi US $785 |
Replace leaking water pump. |
| 44500 mi US $85 |
Replaced cam position sensor (2nd time) |
| 32000 mi US $2775 |
Leaking seals |
2011 Audi A8 4dr Sedan
372-horsepower 4.2L V8 8-speed shiftable automatic AWD
| 79500 mi US $165 |
Rough idle at first start of the day, found carbon buildup...clened out throttle body and valves p |
| 97000 mi US $20 |
Oil change, oil filter cabin filter change. |
2009 Audi A8 / S8 4dr Sedan
| 60000 mi £950 |
the turbo actuator was replaced and a software update was needed for it |
2008 Audi A8 / S8 4dr Sedan
350-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 96500 mi US $950 |
crankshaft seal was leaking, 3 weeks to repair. Part was 30.00 dollars and labor was 740.00 dollars. Oil change was 90.00 dollars. total was 950.00 dollars, my extended warranty did not cover the seal. |
| 98000 mi US $952 |
RR oil filter adapter O ring Inspection Skid plate ( after market wrong fit - need to replace with OEM) |
2007 Audi A8 / S8
Engine not specified
| 111000 mi US $2000 |
Many problems. |
2007 Audi A8 / S8 4dr Sedan, ext.
350-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 47000 mi | Intake flap motor seals. They had to work on it twice. |
| 138000 mi US $1250 |
Mechanic noticed a water leak during routine service. R&R water pump assembly. |
| 66000 mi US $450 |
Car would stall. Fuel relay was bad. Replaced both relays |
| 71700 mi US $20 |
Coolant was low even after refilling in the winter |
| 76500 mi | leak has developed where oil filter inserts. requires removal of intake manifold and many parts...over 6 hours of labor. repair NOT attempted yet. |
| 86000 mi | Oil filter housing leaking |
| 128960 mi C $2000 |
Oil level sensor replaced |
| 135160 mi C $330 |
Failed thermostat under warranty and additional thermostat replaced since there was no cabin heat. |
| 104700 mi US $2800 |
Fuel injector went on bank 2. Dealer told me that they would refurbished the other 3 o rings. Next week the other injector went had to replace rest of them. |
| 101000 mi US $3462 |
Failure of high pressure fuel pump. Replaced fuel filters, all modules, in tank pumps, Mass Air Flow, breather valve |
2007 Audi A8 / S8 4dr Sedan
450-horsepower 5.2L V10 6-speed shiftable automatic AWD
| 55000 mi US $100 |
had to fix small leak on water pump |
| 70000 mi | Thermostat went out. Car was overheating and AC stopped working Tech discovered a leaking fuel line. Replaced fuel line |
| 96000 mi | Water Pump failing |
2007 Audi A8 / S8 4dr Sedan
350-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 111000 mi US $1800 |
8 Fuel injectors replaced. Hose from manifold cracked during repair and part took 3 days to arrive due to snow storm. |
| 43000 mi US $100 |
Leaky oil cooler |
| 45000 mi US $100 |
Dealer stated MAF sensor was defective, causing the car to stall out and not restart |
| 83700 mi | Thermostat replaced. It was failing - took about 3 miles of driving to get to operating temp on a 30 degree day. Also changed all fluids, belts. |
| 80700 mi | Check engine light came on shortly after purchase. Cleaned fuel injectors and replaced air filter. |
| 82700 mi US $500 |
Engine warning light came on again. This trip a loose manifold bolt was discovered and fixed. |
| 86000 mi US $350 |
Engine warning light came on again. Dealer service department discovered a leaking head gasket. Oil had leaked upon spark plugs. All spark plugs replaced. |
| 133000 mi | There was a slight coolant leak that I had never repaired. |
2006 Audi A8 4dr Sedan, ext.
330-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 56000 mi US $2600 |
Thermostat, needs front end taken off $1100. So replaced timing belt and water pump while front already off,added $1500 |
| 103000 mi US $685 |
Check engine light revealed bank one and two oxygen sensors not operating correctly. Replaced and also changed oil and windshield wipers. |
| 109000 mi US $885 |
Replaced fuel sensor - second time for this issue - first time they replaced two air flow sensors. |
| 114000 mi US $800 |
Replaced sensor Replaced sensor |
| 125000 mi US $1000 |
Problem with throttle body |
| 150200 mi US $330 |
Replaced sensor |
| 145000 mi US $3100 |
Timing belt replacement |
| 76000 mi US $600 |
The radiator had a small leak and had to be replaced. This was done during the 75,000 service |
2006 Audi A8 4dr Sedan
330-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 145000 mi US $1600 |
Stupid plastic pipe that connects the oil cooler and block |
| 42000 mi | Thermostat replaced. |
2005 Audi A8 4dr Sedan, ext.
330-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 81600 mi US $700 |
leaking cylinder head gaskets causing burning smell |
| 83000 mi US $6300 |
Plastic connector for coolant into oil cooler leaking, required dropping engine to replace component. It's likely this was damaged when a faulty thermostat caused the engine to apparently overheat a year ago, fixed under warrantee. |
| 84300 mi US $1800 |
heater core clogged - low heat output |
| 109000 mi US $350 |
Joint near catalytic converter corroded and leaking, with load noise |
| 121000 mi US $400 |
valve cover gasket, attempted to fix by tightening bolts |
| 123000 mi US $1800 |
valve cover gasket replacement |
| 56526 mi US $329 |
REPLACE MASS FLOW SENSOR |
| 56526 mi US $100 |
REPLACE MAF SENSOR ($652) (WARRANTY) $100 DEDUCTABLE |
| 57691 mi US $586 |
REPLACE INTAKE MANIFOLD GASKET ($896) REPLACE CRANK CASE VALVE ($242) CARBON CLEAN UP OF VALVES + AIR FILTER ($150) Insurance Paid Partial |
| 69200 mi | REPLACED EVAPORATIVE PURGE VALVE REPLACED BASE GASKET ON COMBI VALVE REPLACE CAT CONVERTOR BANK2 REPLACED BOTH VALVE COVER GASKETS REPLACE BASE GASKET ON COMBI VALVE (exhaust leak in Bank1) $441 $100 Deductable REPLACE EVAPORATIVE EMISSIONS PURGE VALVE $275 $100 DEDUCTABLE REPLACE BOTH VALVE COVER GASKETS $505 Warranty paid minus $100 deductable. REPLACE CAT CONVERTOR BANK2 (government mandate; paid by government) |
| 71870 mi US $196 |
OIL LEAKS: DRIVER SIDE CAM CAPS, VALVE COVER GASKETS (BANK 2). REPAIRED/REPLACED OIL LEAKS * DRIVER SIDE CAM CAPS * VALVE COVER GASKETS BANK 2 REPLACED/REPAIRED |
| 84800 mi US $780 |
REPLACE FRONT MOTOR MOUNT, $740. INSURANCE PAID LESS $100.00 DEDUCTABLE. |
| 87000 mi US $100 |
OIL LEAK. REPLACED VALVE COVER GASKET. $314 (PARTS 80 LABOR 234) |
| 87800 mi US $479 |
OIL LEAK. SEAL ON BANK 1 FRONT SENSOR REPLACED. PARTS 11 LABOR 236 |
| 92300 mi US $1182 |
COOLANT TANK REPLACED |
| 97900 mi US $773 |
REPLACED VALVE COVER AIR/FUEL RATION WAS OFF SINCE THE ABOVE WAS LEAKING REPLACED VALVE COVER AIR/FUEL RATION WAS OFF SINCE THE ABOVE WAS LEAKING |
| 98600 mi US $520 |
REPLACED ENGINE SPEED SENSOR REPLACED ENGINE SPEED SENSOR |
| 99000 mi US $1030 |
Car wouldn't start. Sensor on flywheel malfunctioned, sent bad signals to computer, overheating it, then car shut down. This took 7 months to diagnose and repair. Extended warranty paid $6170. Audi ate about $4,000 in unnecessary engine repairs. |
| 101000 mi US $4250 |
coolant leak requiring engine removal to get to the leak |
| 131000 mi US $225 |
cooling overflow tank leaking |
| 167000 mi US $3600 |
Heard a noise in top of engine. Pulled over, shut down. opened hood, started car and heard bad noise up top. Called AAA for 570 mile tow (Platinum plan OK!) Was cam timing chain tensioner piston. Did Timing belt and rollers at same time. |
| 66824 mi US $121 |
Check Engine Lamp on. Fault code for Catalytic Converter failure. Replaced 1 of 2 Catalytic Converters. (Repair covered by Federal 8/80 Emissions Warranty - $0 deductible. Service Adviser estimates about $4000 if not warranted) |
| 72597 mi US $576 |
Misfire and Check Engine Lamp #6 fuel injector connector broken Replaced #6 fuel injector and connector Covered by extended warranty - Only paid $100 deductible |
| 144500 mi US $3000 |
Timing Belt, Plugs, Discs, Pads and tires |
| 41000 mi US $200 |
drive belt replaced showed signs of wear |
2005 Audi A8 4dr Sedan
330-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 106000 mi | Car was overheating. Diagnosed as a bad thermostat Was loosing coolant slowly. Diagnosed as a verysmall leak in the oil radiator. Estimated cost to repair was $4000, so repair not done at this time. |
| 111000 mi US $2395 |
Engine oil cooler leaking coolant. Had to drop engine and transmission to get to the cooler. Dealer quoted $4000 for this repair. |
| 102700 mi US $3000 |
Leaking water pump and damaged timing belt. |
| 91900 mi US $900 |
Fuel Pump Failed and Oxygen Sensor Failed |
| 80058 mi US $50 |
Check engine light on - replaced air mass sensor |
| 91000 mi US $275 |
Crankshaft position sensor failed |
| 109000 mi US $200 |
Retaining clips for electrical connectors to fuel injectors needed to be replaced. |
| 68000 mi US $140 |
Evaporate valve on the fuel system keeps failing in the closed position. |
| 69000 mi US $200 |
Scavenger system on the fuel sustem |
2004 Audi A8 4dr Sedan, ext.
330-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 102000 mi US $1500 |
Front brake pads replaced by owner at 99,000 miles. Battery was replaced at 101,000 miles by owner. At 102,000 miles timing belt, water pump, thermostat (preventive, failled three times previously) and serpertine belt replaced by independent shop. |
| 120000 mi US $2230 |
Water pump leak and timing off from previous independent shop doing timing belt job. Took to dealer and they recommended doing timing belt job over. Now car is running nice |
| 139000 mi US $200 |
Exhaust leak at the flex hose. |
| 93000 mi C $200 |
exhaust flexible hose |
| 104780 mi C $100 |
Coolant overflow reservoir leak. Replaced. Two days as part had to be order. |
| 112840 mi C $550 |
Sensor for rear timing chain tension defective and replaced. Trouble light came back on an hour after repair while on trip. Then went off for a few hours then on again. Haven't followed up as trouble light is steady but will have checked. |
| 113460 mi C $1800 |
First oxygen sensor replaced then fuel pump |
| 117800 mi C $1400 |
Fuel pump was malfunctioning. |
| 120000 mi US $580 |
Thermostat failure in closed mode. Also replace timing belt, water pump and associated rollers. |
| 162000 mi US $161 |
Engine Speed (RPM) sensor failed. Engine would not start until it had cooled down (took a couple of hours). Pulled fault code using a VW /Audi diagnostic interface (by Ross-Tech). |
| 198000 mi US $1200 |
Water pump (supplied by Blau Parts with 73,000 miles started to leak. So I did the timing belt replacement as well. Blau Parts timing bely had a tear and one strand of nylon cords severed. Now I used OEM parts from a dealer. Lesson learned. |
| 203700 mi US $750 |
Radiator replaced due to leak. |
| 260000 mi US $300 |
Erratic stalling. Passenger side fuel pump defective. Replaced with new VDO part. |
| 96600 mi $15000 |
Noise at starting. Heads replaced and intake manifold replaced |
| 56000 mi US $1050 |
Water pump, thermostat, and coolant sensor. |
| 154000 mi US $2771 |
Thermostat field and replaced timing belt and water pump at the same time. |
| 145000 mi US $1200 |
Coolant leak: cracked nipple between the engine block and oil cooler. |
| 49800 mi US $79 |
Replaced broken plastic actuator arms with aftermarket aluminum arms. |
| 44000 mi US $750 |
Replace a bad motor mount |
| 44968 mi | Leak at oil cooler line. Oil cooler replaced. |
| 82803 mi | Fuel pump replaced. Out of town during repair. Not my normal dealer who has treated me so well. Dealer had car for 10 days. During that time the battery died and needed replaced. Fuel pump replaced. Out of town during repair. Not my normal dealer who has treated me so well. Dealer had car for 10 days. During that time the battery died and needed replaced. |
2003 Audi A8 / S8 4dr Sedan
360-horsepower 4.2L V8 5-speed shiftable automatic AWD
| 138000 mi US $90 |
Serpentine belt and belt roller. |
2002 Audi A8 / S8 4dr Sedan
360-horsepower 4.2L V8 5-speed shiftable automatic AWD
| 145000 mi US $5200 |
Complete rebuild due to broken timing chain |
2000 Audi A8 4dr Sedan
310-horsepower 4.2L V8 5-speed shiftable automatic AWD
| 187967 mi US $11 |
Replaced corroded & stripped bolt that holds plastic shroud that is above and behind air filter housing. Because bolt was corroded, it did not turn and the bracket ripped-off when I tried to turn bolt. I re-tapped and re-atteched bracket. |
| 190618 mi US $256 |
Tensioner pulley bearings failed. Could not get replacement bearing same day. Replaced entire tensioner assembly. |
1999 Audi A8 / S8 4-door
8-cylinder automatic AWD
| 146320 mi C $1500 |
Leak in the Fuel tank, leaking on rear brakes passenger side. Fuel tank had to be replaced. |
| 145700 mi C $3000 |
Main ECU failed, engine shut off and wouldn't restart. This left car stranded in the middle of an intersection while I had to wave by the traffic and wait for a tow-truck.. |
| 145700 mi C $800 |
Piston sensor failed, would not allow car to start at random times. |
See TrueDelta's information for all Sedans
See TrueDelta's information for all Audi models.
