| 1 | 0 | 3 | 4 | 3 | 4 |
2001 Audi A4 / S4 / RS4 repairs by problem area
Engine (47%)
Transmission and Drivetrain (11%)
Brakes and Traction Control (6%)
Suspension and Steering (17%)
Electrical and Air Conditioning (14%)
Paint, Rust, Leaks, Rattles, and Trim (1%)
Other (3%)
Chart based on 172 repairs.
2001 Audi A4 / S4 / RS4 engine repair cost distribution
$2500+ (4%)
$1000 - $2499 (14%)
$500 - $999 (14%)
$100 - $499 (37%)
< $100 (32%)
Chart based on 73 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2001 Audi S4 4dr Wagon
turbocharged 250hp 2.7L V6 6-speed manual AWD
| 92000 mi US $600 |
Both diverter valves for each turbo were bad along with the turbo Y pipe boot. |
2001 Audi S4 4dr Sedan
turbocharged 250hp 2.7L V6 6-speed manual AWD
| 57000 mi US $2000 |
Replacement of O2 sensor, knock sensor and CTS sensor. |
| 83200 mi US $305 |
replaced serpentine belt |
| 104500 mi US $430 |
Vacuum leak, leading to sensor trips and check engine light. Bad valve replaced. |
| 107000 mi US $151 |
Heater not heating properly -- blowing cool air. Coolant level topped of, heater core purged. Helped a little, but heater still not working as it should. Repair would be ~$2000 -- mostly labor to remove dash. |
| 108000 mi US $10170 |
Replaced turbochargers. |
| 155000 mi US $4000 |
Replaced clutch. |
| 156200 mi US $819 |
Leaking gas line and fuel filter |
| 158000 mi US $247 |
Broken muffler side clamps; leaking exhaust; warning light |
2001 Audi A4 4dr Wagon
turbocharged 170hp 1.8L I4 5-speed manual AWD
| 119000 mi US $500 |
No power to fuel pump and coil packs. There was a dead short that also caused the fuel pump relay to fail. |
| 131700 mi US $1700 |
Original clutch failed dramatically, friction material broke into three pieces, flywheel worn beyond resurfacing. |
| 107000 mi | Four new coil packs. |
2001 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed shiftable automatic FWD
| 83000 mi | Check engine light on. P0171 code. Not repair yet. Research being done currently to see what code stand for. |
2001 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD
| 69000 mi US $300 |
Bad idler tensioner bearing and secondary pulley bearing. Originally diagnosed as water pump |
| 117000 mi US $1400 |
Heater inoperable. Replaced heater coil [core], r&r dashboard 10 hours labor. |
| 76260 mi C $125 |
Rear Oxygen Sensor |
| 99200 mi C $60 |
Engine suddenly got noisy, suspected muffler, but was only a rusted clamp. |
| 65000 mi US $500 |
In for Oil & Filter Change. Evidence of slight coolant leakage from Water pump. Replaced pump, timing belt, pulley, tensioner, belts and fan clutch. |
| 109000 mi US $370 |
Intermittent check engine light for several weeks, car running perfectly. Tech decoded error log "fuel trim too lean". Replaced Air Flow sensor to correct problem. No further trouble. |
| 105000 mi US $3300 |
Engine loss due to cracked dipstick (made of plastic). Major engine problems with a loud slapping noise. Fixed belt tensioner, belt, had to open head. |
| 159000 mi | Header had been broken for a while. |
| 117180 mi C $150 |
Replace malfunctioning coolant temperature sensor |
| 119040 mi C $400 |
Malfunctioning thermostat and radiator connection resulting in total loss of coolant. |
| 124000 mi C $60 |
Replace rotted flex pipe connection clamp that was the source of an underbody exhaust leak. |
| 124700 mi C $300 |
Very noisy engine at hot idle. Replace failed AWM 1.8T cam chain tensioner. Also replaced timing belt during same repair job. Also replaced valve cover gaskets. |
| 125860 mi C $200 |
Exhaust leak/noise due to corroded flex pipe connection. Replace flex pipe. |
| 123740 mi C $40 |
Replace exhaust manifold gaskets. Was leaking exhaust fumes at manifold-to-turbo connection. |
| 132360 mi C $60 |
Coolant leaking at engine rear side. Replaced plastic coolant flange and seals. Refill with fresh coolant. |
| 136400 mi | Coil pack failure causing misfire. All coil packs replaced for free under recall. |
| 141360 mi C $420 |
Replace exhaust flex pipe |
| 142600 mi | Engine misfiring and stalling after start. Problem caused by broken jet suction pump. |
| 156000 mi US $1800 |
Timing belt replacement |
| 159700 mi | Temperature sending unit was faulty |
2001 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed manual FWD
| 123690 mi $430 |
Replaced leaking coolant flange Replaced G40 Hall sensor |
2001 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed manual AWD
| 125000 mi US $45 |
Coilpack |
| 171000 mi US $495 |
Water pump leaking, alternator bolt loose(was wearing down timing belt) |
| 177000 mi US $300 |
Misfire |
| 116900 mi US $1500 |
Replaced manifold discharge pipe |
| 103000 mi US $64 |
Car was reporting lean fuel condition. MAF was replaced. |
| 104000 mi US $250 |
Poor fuel economy -replaced MAF, and O2 sensors |
| 178000 mi US $250 |
Secondary air injection pump failed |
| 228000 mi US $300 |
Secondary air injection pump again |
| 143200 mi US $500 |
Exhaust blowing white/blue smoke. Turbo charger had a fair amount of in-and-out shaft play. Removed turbo to rebuild it. Upon draining the oil, it looked mixed with coolant. Suspect head gasktet needs to be replaced as well. |
| 144500 mi | Emission system leak - problem was created by previous owner by puncturing the charcoal canister. Plugging the puncture fixed the problem (IE no more check engine light illuminated). |
| 149300 mi US $600 |
Engine mounts. |
| 154000 mi US $80 |
Coil packs were going bad, car misfiring under boost. Found that the previous owner had 3 different coil part numbers in the car. Replaced with VW/Audi recommended part # for the engine. |
| 159000 mi US $30 |
Car was overheating, replaced plastic flange on the back of the block and all O-rings to prevent future leaks. |
| 160000 mi | Crankcase breather elbow slipped off its clip, oil would fly out of the opened hole onto the engine. Easy fix, no idea why this occurred though. |
| 162000 mi US $400 |
clutch wore out = changing the clutch, flywheel, pressure plate and rear main seal. |
| 163000 mi US $80 |
knock sensors were bad |
| 163000 mi US $20 |
ECU Relay went bad |
| 243000 mi US $250 |
Valve cover gasket replacement - leaking |
| 249000 mi US $225 |
Backflush heater core - clogged/no heat Replace oil temperature sensor |
| 259000 mi US $330 |
Backflush heater core - clogged/no heat, $130 Replace oxygen sensor after CEL, $200 |
| 270000 mi | Backflush heater core - clogged/no heat |
| 275200 mi US $400 |
The ECU actually died! Of all things to break, I wouldn't have thought the ECU to die. There was no moisture of any sorts. |
| 134000 mi | Oil pan drain threads stripped, tried to fix with larger self tapping bolt. Bolt cracked oil pan, had to replace oil pan. |
| 188480 mi C $1800 |
Oil light came on. Cause was oil pump. Pump replaced. At same time replaced timing belt. |
| 217000 mi | Rough idle. All vac leaks repaired. No improvement. |
2001 Audi A4 4dr Sedan
190-horsepower 2.8L V6 5-speed shiftable automatic AWD
| 122000 mi US $450 |
Replaced 2 valve cover gaskets, brittle and leaking a bit of oil, and replaced o-ring on temperature sensor, leaking anti-freeze. |
| 142000 mi | Coolant Temp Sensor |
2001 Audi A4 4dr Sedan
190-horsepower 2.8L V6 5-speed manual AWD
| 138980 mi C $800 |
PCV hoses |
| 109000 mi US $1000 |
Replaced Mass Air Flow Sensor. Replaced Timing Belt (needed) also had water pump because of high mileage but it was still working fine before |
| 70000 mi US $200 |
O2 sensor |
| 70000 mi | Check engine light, "fault P431" O2 sensor reading too much oxygen. Apparently can be cured by a spacer placed between the sensor and the catalytic converter to reduce the exposure of the sensor. But car sold before this was attempted. |
| 127000 mi US $313 |
Flex pipe Exhaust leak right side |
| 161700 mi US $1050 |
Catalytic converter replacement |
| 168000 mi US $2100 |
Replaced worn clutch |
| 174700 mi US $880 |
Coolant leak |
| 188000 mi US $580 |
exhaust piping |
2001 Audi A4 / S4 / RS4 4-door
turbocharged 6-cylinder manual AWD
| 155000 mi US $400 |
Replaced fuel injector. Replaced oxygen sensor. |
2001 Audi A4 / S4 / RS4 4-door
turbocharged 4-cylinder manual AWD
| 122000 mi US $650 |
Secondary Air injection code thrown (self diagnosed). Replaced several vacuum lines and a valve. Rattle from front left turned out to be l Engine gasket leaking (smelled oil), replaced gasket. |
| 124000 mi US $35 |
Misfire on Cylinder 2. Car was idling rough w/ no reduced power. Swapped coilpacks 2 and 3, misfire jumped to cylinder 3. Determined it was faulty coilpack, replaced with part from dealership |
See TrueDelta's information for all Audi models.
