| 1 | 0 | 3 | 4 | 3 | 4 |
2002 Audi A6 / S6 / RS6 repairs by problem area
Engine (52%)
Transmission and Drivetrain (16%)
Brakes and Traction Control (6%)
Suspension and Steering (13%)
Electrical and Air Conditioning (8%)
Paint, Rust, Leaks, Rattles, and Trim (1%)
Other (5%)
Chart based on 309 repairs.
2002 Audi A6 / S6 / RS6 engine repair cost distribution
$2500+ (4%)
$1000 - $2499 (21%)
$500 - $999 (24%)
$100 - $499 (33%)
< $100 (19%)
Chart based on 139 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2002 Audi A6 / S6 / RS6
Engine not specified
| 86800 mi | Car overheated took to the Garage - they checked computer found no problem, went on 2 hour high speed trip red, warning overheating came on had car towed 150KM, thermostat replaced. |
| 150000 mi US $400 |
Check Engine Light and OBD2 code P0421. I will replace all 4, O2 sensors. Supposedly, Bosch states the service life is 100k miles. Mine have 150k on them. Hoping for no engine light, and better mpg! |
2002 Audi A6 / S6 / RS6 4dr Wagon
340-horsepower 4.2L V8 5-speed shiftable automatic AWD
| 76900 mi US $350 |
Both mufflers replaced, one under Midas warranty. |
| 79000 mi | bank 1 catalytic converter element became loose inside cat. housing bank 1 catalytic converter element became loose inside cat. housing - rattling while driving. Taken to dealer |
| 79000 mi | loose catalytic converter element on passengers side replaced under original factory warranty (10yr/100k miles for S6) |
| 99000 mi US $100 |
Secondary air injection pump bearing noisy/failed. Removed large fuse in ECU box. Manually set readiness |
| 139000 mi US $25 |
Water Temp Sensor failed, replaced myself. |
| 155000 mi US $160 |
Cooling system return line broke at fitting behind reservoir |
| 157000 mi US $520 |
Serpentine belt tensioner replaced. |
| 124000 mi US $575 |
Oil leak near rear main seal. Resealed upper oil pan. Looks okay for now. |
| 135600 mi US $875 |
replaced front oxygen sensors, $575 |
| 144300 mi US $130 |
oil leak |
| 85000 mi US $750 |
Bad thermostat causing overheat. Due to design, work ultimately included replacing timing belt, waterpump, serpentine belt, and associated rollers and tensioners. |
| 86000 mi US $6 |
cracked vacuum lines for Secondary Air Injection system caused CEL to come on |
| 113200 mi US $4100 |
Defective electric fans and controller, stuck thermostat |
| 71000 mi US $2200 |
Thermostat stuck in closed position and car overheated. Temperature sensor broke. As front end required removal for thermostat replacement, I replaced timing belt and 80K service at same time. |
| 95800 mi US $2600 |
Engine oil cooler pipe broke. Required engine to be lowered after talking mech out of pulling engine. Talked mech down from 35 hours of labor to 16. Piece is a 1 inch piece of plastic. Probably costs cents to make. |
| 110000 mi | Needed a new catalytic converter when sold. |
| 50000 mi | Thermostat stuck - closed. Car was in danger of overheating. No price give, but this is a 5-7 hour job on a 4.2L audi. Covered under COP warranty. At the same time I paid to have the 60k timing belt service done (since the first 5-7 hours were covere |
| 67000 mi US $150 |
clamps and tubing connecting cats to mufflers rusted away and was replaced with new. |
| 70000 mi US $40 |
coolant temp sensor failed. I ordered parts, antifreeze, and did the job myself. 1+ hours work ( reported at zero cost) + $40 total parts. |
| 99000 mi US $15 |
Replaced worn out (torn) vacuum lines that caused a CEL. |
| 48000 mi US $200 |
Mass air sensor problem. Audi paid for the part, I paid for the installation |
| 53000 mi US $1700 |
Thermostat went so also replaced water pump, timing belt, serpentine belt, tension rollers, expansion tank which had cracked. |
| 67000 mi US $500 |
Replacesd valve cover gasket which was leaking |
2002 Audi A6 / S6 / RS6 4dr Wagon
220-horsepower 3.0L V6 5-speed shiftable automatic AWD
| 112000 mi US $180 |
two vacuum leaks: one hose and a 'nipple' broken off manifold changeover valve. |
| 113000 mi US $200 |
Electrical connectors on timing sensors were broken and had to be replaced. I 'believe' this damage occured at another repair shop. Dealer had to order parts - 3 days - and fix. Previous repair shop repaid me half of repair. |
| 105000 mi US $500 |
Oil leak from head gaskets. |
| 106000 mi US $520 |
Oil leak from filler cap. Replaced Breather valve(PCV) and hoses. |
| 109000 mi | Bunch of misfires. O2 sensor light came on and stayed on. |
| 89000 mi US $1500 |
Catalytic converter |
2002 Audi A6 / S6 / RS6 4dr Sedan
turbocharged 250hp 2.7L V6 6-speed manual AWD
| 55000 mi US $650 |
I had the gas tank fixed as a leak between the fuel pump and the tank occured. The tank's flange for the fuel pump (a solid piece of the tank) cracked and the whole tank needed to be replaced. |
| 69000 mi US $820 |
I had the timing belt done wich included the water pump and all assosciated belts and kits. |
| 91000 mi US $400 |
Check Engine Light for rich air/fuel mixture. Was caused by a faulty part and associated sensors. |
| 102000 mi US $850 |
Developed exhaust leak behind (after) cats. Entire cat-back (pipes, resonator, mufflers) had to be replaced. |
| 117000 mi US $1300 |
Failed water pump replaced along with full timing belt job (timing belt and all related seals). |
2002 Audi A6 / S6 / RS6 4dr Sedan
turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD
| 111000 mi US $300 |
Egt sensor replaced, air leak fixed Exhaust gas temperature sensor replaced, small vacum leak fixed |
| 115000 mi US $200 |
Clip broke off from one of the coolant lines, coolant leaked out everywhere, also had to replace thermostat (sensor) |
| 116800 mi US $1400 |
One of rollover nipples broke on gastank, had to replace gas tank. MAP sensor failed, bought online and replaced myself |
| 81000 mi US $488 |
Leaking cam seals. |
| 67000 mi US $235 |
Diagnosed as thermostat stuck open and small coolant leak from after-run pump. Quoted to include replacement of timing belt, water pump and other items pulled off during maintenance, but too rich for my blood today. After my spring bonus maybe... |
| 70000 mi US $950 |
After run coolant pump replaced. |
| 71000 mi US $590 |
Main vacuum line was improperly reinstalled during last repair, which then broke while driving, resulting in rough idle and engine misfire. |
| 79000 mi US $1200 |
Both cats replaced due to faulty repair problem reported in July. |
| 105000 mi US $3300 |
Oil leaking from turbo seals |
| 115000 mi US $1345 |
Fan motor failed, fan was replaced |
| 126000 mi US $560 |
Gasket leak caused engine to misfire. replaced gasket, cleaned the oil from the cylinder and replaced 3 spark plugs. |
| 141000 mi US $50 |
CIL on for a long time, asked to check it out. After 2 days to diagnose, smoke test found small leak in fuel tank vent. Requires tank removal to fix. More than value of car. Hope to reset CIL and pass emissions at next registration or byebye |
| 43600 mi US $1250 |
Blown block plug drivers side. Oil gushed out. Plug blown on exteremly cold day, car not allowed to warm sufficiently prior to driving |
| 55000 mi US $400 |
mass airflow meter |
| 134000 mi US $400 |
center muffler in the exhaust had corroded so the hangers failed. I replaced the center muffler |
| 149000 mi US $600 |
Water pump starting to leak. So I went ahead and had the full timing belt service done, which includes new water pumps |
| 50000 mi US $1600 |
water pump repair |
| 51500 mi US $500 |
maf replacement |
| 58000 mi US $1600 |
water pump repair |
| 61000 mi US $500 |
maf replacement |
| 93000 mi US $600 |
Auxillary water pump had to be replaced. Known problem on the 2.7t motors. Part costs 100 but the work to replace it was hefty. Quattroworld.com (EuroVWGTi) |
| 94000 mi US $300 |
One of the three 10mm bolts that hold the rear driver side timing belt cover, came loose. Little by little as it came out, it was shredding the timing belt. Half the belt was destroyed, while the cover rubbed on the rest of the belt. Belt almost broke. |
| 95000 mi US $1200 |
Water pump, tensioner. |
| 97000 mi US $250 |
1 bank of coils (3 coils) went out. |
| 122000 mi US $1280 |
Aux water pump failed due to crack. Replaced pump. |
| 75250 mi US $20 |
(DIY fix, parts only). Got "system too lean" codes and a check engine light, replaced numerous cracked and worn vacuum tubes around the engine. |
| 55000 mi US $800 |
Replaced leaking auxiliary (turbo) water pump |
| 84000 mi US $700 |
Replaced 2 oxygen sensors that caused "check engine" light. |
2002 Audi A6 / S6 / RS6 4dr Sedan
300-horsepower 4.2L V8 5-speed shiftable automatic AWD
| 126000 mi US $2000 |
Oil leak and small hole in oil pan. |
| 150000 mi US $350 |
Vacuum hose replaced to address check engine light. |
| 104000 mi US $415 |
Intake Manifold - Free Up IMT Valve Shafts, replaced worn vacuum hoses Replaced leaking expansion tank |
| 111000 mi US $1000 |
replaced O2 sensors and purge valve. Changed oil also |
| 116000 mi US $600 |
Oil cooler seals and transfer pipe. Parts $105 Labor $495 |
| 127000 mi US $1278 |
Coolant sensor defective. Caused minor starting problem associated with computer thinking the engine was overheated. |
| 137000 mi US $1320 |
Replaced Serpentine Belt |
| 158300 mi US $330 |
Replaced bad Secondary Air Pump pipe |
| 66300 mi US $653 |
Oxygen sensor replacement. Secondary Air Injection system failed 5 hours after a previous service. Shop "fixed" the problem, but it then came back. I later troubleshot and fixed the problem myself. I gave the SAI system a good going over and found a vacuum line to the combi valves had become disconnected. Reconnected it and voila! No more error codes. Replace 2x front oxygen sensors. |
| 105000 mi US $985 |
Secondary air pump required replacement along with some associated vacuum lines. |
| 115000 mi US $1800 |
Coolant expansion tank cracked |
| 104000 mi US $624 |
replaced O2 sensor coolant container was cracked and replaced |
| 107000 mi US $1835 |
Thermostat failed - replaced tstat, water pump seeping - replaced timing belt, serpentine belt, water pump, |
| 124000 mi US $200 |
replaced seeping valve cover gaskets |
| 140000 mi US $125 |
O2 sensor showed fault code. CEL went out and has not returned. |
2002 Audi A6 / S6 / RS6 4dr Sedan
220-horsepower 3.0L V6 5-speed shiftable automatic AWD
| 58400 mi US $397 |
warning light came on, replaced the thermostat. warning light came on again, replaced the sensor |
| 63500 mi US $3200 |
engine oil leak that required pulling the timing belt cover and housing. replaced timing belt, required at 10 years anyway. broken engine mount and core support mount. |
| 135000 mi US $2300 |
motor mounts (3). Valve cover seals. |
| 110000 mi US $800 |
Emissions issues, air leaks. Attempted to repair by replacing air hoses but did not resolve. |
| 58000 mi US $3400 |
I had a vacuum leak in the brake system, 5 of 6 failing coil packs, and my lifters were damaged and rubbing. I got all this fixed along with my scheduled TB maintenance. |
| 88000 mi US $175 |
Coolant leak from a damaged hose. Hose replaced. |
| 173000 mi US $1300 |
Replacement of the PLASTIC pipe that carries coolant to the rear of the engine. |
| 83000 mi US $367 |
Engine light was on. Engine scan code came up as minor leak. car had a after market eval purge valve. It was no good and replace withe OEM one. |
| 83700 mi US $111 |
Engine light on, Code read camshaft position sensor left side. |
| 87000 mi US $650 |
CEL came back on . After smoke test it was determined that fuel tank was cracked. Tank replaced |
| 63000 mi US $100 |
Thermostat failed in the locked position, causing the vehicle to overheat. Head gasket may be damaged. |
| 65000 mi US $100 |
Ignition coil failure, car ran REALLLLY rough. New coil installed on cyl #5 and ran smoothly. STILL have a weird smell going on... |
| 105000 mi US $500 |
Mechanic damaged exhaust flex joint. Cut out and soldered new one in its place. I paid for the flex joint, and he comped me the labor. |
| 99000 mi US $212 |
Engine temp sensor leak (coolant leak) |
| 102000 mi | Check engine light reset, pre-cat converter fault |
| 104000 mi | Check engine, suspect catalytic converters, reset check engine |
| 105000 mi US $2010 |
Catalytic Converter replaced (both) |
| 111000 mi US $171 |
Coolant temp sensor orang leak. |
| 112200 mi US $1100 |
Water pump went out, pushed into timing belt, replaced pump, idlers and timing belt |
| 114000 mi US $420 |
Serpentine belt tensioner failed, had to replace tensioner and belt. |
| 74000 mi US $1000 |
Vacuum lines in engine and cooling system leak. |
| 82000 mi US $253 |
Check engine light was on. Left catalytic converter has a problem. |
| 84000 mi US $1400 |
Engine suddenly seemed to be missing a cylinder, replaced one ignition coil. Replaced O2 sensor after shop said computer analysis found that one was bad. |
| 124000 mi US $800 |
Replace Valve cover gasket. Also replaced transmission fluid |
| 131000 mi US $2130 |
Broken cam gear. Replaced gear, timing and other belts, timing case housing and seals. |
| 226000 mi US $160 |
car not firing on all cylinders, turned out to be a faulty coil. Replaced coil and solved problem |
| 228000 mi US $1100 |
Radiator leaked, car overheated, towed to shop and radiator replaced. While at shop check engine light on, cat codes - replaced mass air sensor. Then another coil needed replacing. Passed inspection, got sticker. Also got recall for faulty coils. |
| 231000 mi US $350 |
belt tensioner let go, belt no longer attached. Replaced belt and belt tensioner |
| 235300 mi US $110 |
oil level sensor failed - display came on noting sensor failure. Part replaced |
| 232800 mi US $420 |
check engine light; camshaft sensor faulty catalytic converters bad, cat cnvrtr still bad Coolant leaking. Coolant tank replaced, coolant leak shorted out camshaft sensor. Exhaust pipes leaked, welded on new pipes. |
| 247000 mi US $2200 |
Replaced catalytic converters, check engine light now off, car runs great. |
| 259000 mi | water pump let go; last replaced at 205,000 miles. Will not make the repair due to cost - traded car in on another vehicle. |
| 58648 mi | Purchased car. During test drive, the "oil" light came on. Turned out to be faulty sensor - obviously dealer covered - believe it was $29. I replaced oil, filter, gear oil & spark plugs for $115 (synthetic oils) to give myself solid baseline. |
| 61000 mi US $220 |
Replaced tranny snub mount (shot) Trans range sensor was faulty. "17090 - trans range sensor (f125): Implausible signal P0706 - 003 - mech failure - intermittent - MIL on" was my code. $220 part AND pain to replace!! I created writeup on Audiforums.com - check DIY section. |
| 113000 mi US $80 |
Ignition coil replaced less than a hundred miles after the timing belt repair. |
| 120700 mi US $250 |
replaced the 5 other ignition coils because of continued problems. Also put in a K&N air filter |
| 37000 mi | Passenger side valve cover Gasket replaced under CPO |
| 41000 mi US $75 |
Replaced all spark plugs (self) |
| 56000 mi US $50 |
Pulley seized causing water pump to blow. Water pump, timing belt and all related items covered under CPO. |
| 65000 mi | Cat Replaced by Dealer under warranty |
| 67000 mi US $75 |
Cat replaced |
| 79000 mi US $775 |
- Belt tensioner - Hazard switch - Window regulator |
| 93000 mi US $157 |
Camshaft damaged by a loose spring on driver side. Total damage $3290, warranty covered repair. |
| 102800 mi US $377 |
Engine mounts Cam positioning sensor Purge valve clogged |
| 80000 mi US $1000 |
Replaced plugs and coils. mechanic said valve cover gaskets leaking and made sense to go ahead and repair even though may not have been that much of an issue at this point. Probably would have gotten worse if not corrected? |
| 119000 mi US $520 |
Ignition housing broke where key is inserted. Car would not start and had to be towed to repair shop. |
| 124000 mi US $657 |
Misfiring badly. Needed new crankcase ventilation valve and plugs. Still runs a little rough at idle, but no codes! |
| 124000 mi | Misfire returned a few weeks later. Mechanic suggested ditching it. |
| 175000 mi | Radiator leak. did not fix. |
| 90500 mi US $150 |
Check engine light on for about a week-code p1296 then started overheating. Dealer advised to replace waterpump, timing belt, etc for $1800. Towed to independent garage--said it was the coolant temp sensor, they fixed for $150 including the tow. |
| 93000 mi US $1000 |
Replace defective oxygen sensors |
| 103000 mi US $783 |
Water pump failure. Replaced water pump and timing belt. Also replaced front engine mount during repair. |
| 109100 mi US $128 |
Replace ignition coil |
| 86000 mi | bad left cat |
2002 Audi A6 / S6 / RS6 4-door
8-cylinder automatic AWD
| 50000 mi US $195 |
Expansion coolant tank cracked and coolant leaked. |
2002 Audi A6 / S6 / RS6 4-door
10-cylinder automatic AWD
| 64000 mi US $300 |
Knock sensor and Air pump for secondary air went out. I buy parts wholesale so the dollar value is low. |
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