| 1 | 0 | 3 | 4 | 3 | 4 |
2003 Audi A4 / S4 / RS4 repairs by problem area
Engine (51%)
Transmission and Drivetrain (7%)
Brakes and Traction Control (3%)
Suspension and Steering (8%)
Electrical and Air Conditioning (21%)
Paint, Rust, Leaks, Rattles, and Trim (3%)
Other (7%)
Chart based on 360 repairs.
2003 Audi A4 / S4 / RS4 engine repair cost distribution
$2500+ (7%)
$1000 - $2499 (16%)
$500 - $999 (18%)
$100 - $499 (32%)
< $100 (27%)
Chart based on 153 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2003 Audi A4 4dr Wagon
turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD
| 78120 mi C $30 |
Coil pack failure, replaced with OEM part. |
| 78740 mi C $25 |
Had to replace coil pack. Second one in as many months. |
| 86180 mi | coolant temp sensor |
| 73000 mi US $1437 |
Coolant leak; hoses and seals replaced; 80k service completed at same time |
2003 Audi A4 4dr Wagon
turbocharged 170hp 1.8L I4 5-speed manual AWD
| 143100 mi C $40 |
Progressively worsening leaking "J-plug" on the thermostat housing. Self replaced, was a PITA. Engine block breather tube deteriorated, then split and torn. Replaced this one part and successfully connected into remaining original breather system w/o the other tubing/ valve crumbling and breaking Part cost $45. |
| 141360 mi C $120 |
Vacuum line had small leak causing rough idle even though drivability and power were fine during acceleration and at speed. |
| 115320 mi C $205 |
Flex pipe rotted out, was replaced |
| 121520 mi C $25 |
Cylinder 3 misfire. Coil pack replaced |
| 125860 mi C $70 |
Diverter valve malfunctioned; replaced but caused turbo to leak coolant into the oil. Will need to be replaced at a later date. |
| 128320 mi C $630 |
Motor mounts had failed and were leaking. Mounts replaced. |
| 71010 mi US $260 |
Replace radiator Replace driver side rear diff seal Replace center diff output seal |
| 104800 mi US $18 |
Lower coolant temp sensor failed. |
| 124000 mi US $500 |
Turbocharger replaced. |
| 128000 mi | Replace all 4 ignition coils. Replace main coolant temp sensor. |
| 128700 mi US $40 |
Replace primary O2 sensor. |
| 132000 mi US $300 |
Replace exhaust. |
| 143000 mi US $5 |
Replace cracked dipstick tube. Replace j plug and turbo coolant lines. |
| 143300 mi US $28 |
Replace cam cover and intake cam seal. |
| 144000 mi US $2000 |
Replace cam seal Replace VVT gasket Replace timing belt/water pump/tensioner Replace thermostat |
| 120000 mi | All 4 coil packs replaced. |
| 129000 mi US $395 |
Rear coolant flange needed replacement. |
| 131000 mi US $650 |
Cylinder head and valves failed, small hairline cracks on 2nd cylinder. |
| 92000 mi US $200 |
One spark plug coil failed Exhaust pipe rust hole repaired by replacing pipe |
| 96000 mi US $400 |
Original exhaust hanger was rusted off, new one welded on |
2003 Audi A4 4dr Wagon
| 136400 mi $800 |
Require new fuel pump |
2003 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD
| 80000 mi US $600 |
Valve cover gasket was bad and leaking thus ruining 1 or more coilpacks |
| 63000 mi US $6100 |
I drove off the used car lot and five miles down the road the light came on. Coolant waring light came on and overheating. Replaced the water pump and timing belt. (Then we got the car back and the head gasket was blown and that's still not fixed.) the car has a blown head gasket and a cracked head. |
| 64000 mi US $756 |
2003 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD
| 64000 mi US $912 |
coolant leaking replaced a few clips, conduits and a coolant flange |
| 113300 mi US $350 |
Cam shaft positioning sensor replaced |
| 28000 mi US $19000 |
36000 miles took to dealer for leaking Valve cover gasket and they said a Motor Mount needed to be replaced also. Covered under warranty |
| 51000 mi US $240 |
DIY change Coil Packs, One way valve and spark plugs. |
| 52000 mi US $80 |
MIL light P0171 code. Determined that a check valve was cracked causing a vacuum/boost leak. removed and replaced and cleared MIL |
| 54000 mi US $100 |
Car not heating up. replaced thermostat |
| 60000 mi US $30 |
Misfire cylinder 1. Replaced coil pack |
| 67580 mi C $1400 |
Replace camshaft tensioner gasket & valve cover. Replace secondary injection flange. |
| 71300 mi C $150 |
Oil leak tracked to valve cover. Could have been because of the extreme cold that day (-35C). |
| 74400 mi C $1300 |
Dealer replaced valve cover gasket. Water pump impeller blade was broken and replaced by shop. Timing belt replaced. |
| 99200 mi C $60 |
Fitted third heater core to the car |
| 99700 mi C $400 |
Turbo boost low. New Dump valve fitted. Update April 2017: didn't fix, turbo boost issue still present but not a big problem- drives ok. |
| 105900 mi C $170 |
Failed injector, dealer wanted to replace all 4 and all 4 plugs. Had car towed home and repaired myslef for $170. Flexpipe broken Repaired injectors myself. |
| 109100 mi C $270 |
Radiator leaking at seals (plastic to metal on passenger side) |
| 56000 mi US $8500 |
oil pressure light on. engine replacement necessary due to oil sludge. |
| 58000 mi | coil pack went bad causing engine to misfire. |
| 75000 mi US $35 |
Oil dipstick tube leaving residue inside, dripping into oil. |
| 68000 mi US $1100 |
Replaced the entire exhaust system. |
| 120000 mi US $250 |
water pump failed and leak all antifreeze on the road. Had to keep filling with h20 to get it home. Happened close to home. Did the serpintine belt and timing belt with tensioner too. |
| 165000 mi US $4750 |
Spark plug wires shorting out and warn out. |
| 178000 mi US $30 |
Replacing thermostat |
| 198000 mi | Timing belt broke |
2003 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed manual FWD
| 50000 mi | Misfire when cold |
| 52000 mi | Misfire at startup |
| 156000 mi US $2000 |
valve cover gasket cracked due to the hose providing the coolant and water breaking off got water and oil into the spark plugs |
| 61000 mi US $500 |
Flange connecting evaporator to radiator....close to this anyhow. At 7 years old and 61,000 miles it will also need a new clutch soon we were told. Sounds normal for the age and mileage. |
| 157300 mi US $250 |
Fuel pump started to make a loud whining sound during vehicle operation and caused issues when attempting to start the car. Replaced with an OEM fuel pump. |
| 157600 mi US $900 |
Original clutch began to slip. Replaced with new, aftermarket clutch with a higher torque rating. Original motor and transmission mounts replaced. |
| 45000 mi | ECU failure. Vehicle was still drivable, but the CEL was not able to be cleared. Replaced under warranty. |
| 65000 mi US $300 |
Fuel pump failed, repaired myself |
| 67000 mi US $220 |
Radiator leaking, replaced, did the repair myself |
2003 Audi A4 4dr Sedan
turbocharged 170hp 1.8L I4 5-speed manual AWD
| 218000 mi US $1000 |
Misfiring Cylinder Ignition Coils Oil in Cylinders |
| 75000 mi | Sold with oil leak in engine near timing belt area. |
| 124500 mi US $1250 |
CEL 2181 cooling out of range. Replaced thermostat and manifold. Serpentine belt and tensioner replaced |
| 129000 mi US $850 |
Replace flex pipe in exhaust |
| 135000 mi US $500 |
Small coolant leak traced to famous coolant flange |
| 50000 mi US $50 |
Replaced all 4 coilpacks (under warranty) |
| 121800 mi US $180 |
Exhaust separation. Stainless steel flex pipe was used to replace the separated section. |
| 116000 mi US $600 |
Cracked pcv valve, and several other vaccuum valves in the engine area. |
| 129000 mi US $600 |
Oil pressure light came on, pickup tube in oil pan was clogged, replace tube. Also replaced engine mount. |
| 82000 mi US $650 |
Coolant light kept coming on. Found a leak in one or two hoses going into coolant system and worn ring. Will give move details when I pick up car tomorrow. |
| 90000 mi US $1266 |
Removed and replaced timing belt, timing components and water pump. Drained engine oil. and removed and replaced engine air filter. Checked fluids. Inflated and adjusted tire pressure. Removed and replaced engine oil level module; |
| 90000 mi US $1200 |
MIL was on. Thought problem was coil pack. Mechanic found cause of MIL to be rotten crankhouse vent hose, not coil pack. Had item replaced, slight valve cover leak noticed as well. |
| 117000 mi | CEL came on, replaced the temperature sensor. |
| 126200 mi US $558 |
replaced ugly looking coolant and coolant tank. was told by tech that previous person might have added the wrong coolant for top off. tech advised another coolant flush would be ideal to flush out old/bad coolant. |
| 144000 mi US $148 |
replaced mass air flow sensor |
| 155000 mi US $1798 |
ECU tune for big turbo. New injectors, battery, and spark plugs. Replaced bad 3-way valve & jet pump. stock turbo went bad, replaced with big turbo. new coolant and expansion tank reservoir. |
| 160000 mi US $2000 |
Replaced bad boost pressure sensor |
| 163919 mi US $2500 |
clutch was slipping, replaced with upgraded clutch & flywheel kit coolant leak, replaced coolant flange from a previous job at a different shop replaced mass air flow housing |
| 89900 mi C $100 |
Replaced first coil pack (Failure) |
| 89900 mi C $1200 |
Water pump replacement. |
| 52000 mi US $400 |
replaced coolant flange at rear of engine block - leaking. |
| 60000 mi US $570 |
thermostat failed, replaced. replaced defective thermostat. |
| 70000 mi US $275 |
Ignition Coils #1 and #2 went bad causing engine light to come on. This caused the car to shudder and was advised not to be driven and was towed to a auto shop recommended by a friend who is good at import euro cars. THERE IS A Campaign NOW. |
| 44000 mi US $100 |
valve cover gasket leak, repaired. |
| 50000 mi US $200 |
cracked radiator seam |
| 62000 mi US $60 |
Typical thermostat failure. replacing part takes 2-3 hours. |
| 62000 mi US $300 |
Car unable to start, no diagnosis so far. |
| 63000 mi | Low oil pressure light, checked oil pick up tube inside oil pan and found nothing. Cleaned oil tube and performed oil change, also cleaned oil pressure switch contact. Light did not return. |
| 99800 mi US $150 |
Replaced mass air flow sensor |
| 104000 mi US $20 |
Suction jet pump failed, replaced unit |
| 109000 mi US $10 |
Replaced crank position sensor |
| 75000 mi US $675 |
valve cover gasket worn, had it replaced coolant shooting out from rear of engine. Replaced Rear engine flange. |
| 85000 mi US $500 |
fuel filter clogged, resulting in a burnt pump. Replaced fuel filter as well. |
| 45000 mi US $300 |
coolant leak from rear of engine |
| 45250 mi US $200 |
coil failed |
| 83800 mi | coil failed |
| 90500 mi US $600 |
Plastic check valve failed causing a leak |
2003 Audi A4 4dr Sedan
220-horsepower 3.0L V6 6-speed manual AWD
| 133300 mi US $2552 |
replaced accessory belt tensioner and serpentine belt |
| 152000 mi US $500 |
Replaced coil packs due to CEL codes |
| 88000 mi US $2500 |
Pcv valve froze. Blew out seals. oil leaks everywhere.new pcv valve timing belt and seals. |
| 150000 mi US $50 |
Exhaust connector rusted thru |
| 147000 mi US $110 |
Replaced noisy accessory belt tensioner. Replaced belt while I was in there. Noise is gone. |
| 153000 mi US $35 |
It was just a cracked expansion tank that was replaced. |
| 157000 mi US $200 |
Pre Cat O2 sensor on passengers side had short. Replaced both sensors on B1 Replaced coolant temp sensor to clear random misfires only noticeable with diagnostic monitor. This was a long term problem that was fixed by random maintenance. |
| 165000 mi US $110 |
Replaced pre and post O2 sensors on Bank2. Replaced check valve and broken vac line as well. |
| 70899 mi US $1351 |
Replace all coil packs, evap system purge valve Replace front brake pads and rotors Replace driver window switch module |
| 75000 mi | Oil pressure sending switch. |
| 90000 mi US $50 |
Coolant temp sensor intermittent failure. coolant expansion tank replaced because it was leaking. |
| 122400 mi US $700 |
replaced catalytic coverter |
| 237000 mi US $7 |
coolant temp sensor gasket failed. |
| 135000 mi US $120 |
Coil pack replacement |
| 147500 mi | Intake actuator drive unit developed internal vacuum leak. I plugged a vacuum like associated with the leak. Now only 1/2 of the actuator draws vacuum. Not a perfect fix, but its getting the job done. |
| 150000 mi US $75 |
Replaced upstream oxygen sensor on the drivers side |
| 150000 mi | worn rubber hoses |
| 132000 mi US $510 |
Change OEM silencer (Middle mufflers) |
| 147900 mi US $1500 |
Changing the cam seal of the right blank |
| 125800 mi US $1500 |
Freeze Plug on the waterpump began to leak. Waterpump was still good, with only 40K miles on the pump. Water pump had to be replaced to stop the leak. $1500 repair b/c behind the timing cover. |
| 142000 mi US $500 |
coolant leak |
| 173000 mi | 2nd repair of pipe on rear of engine 18 months ago. Warrantied, otherwise $700 cost. |
2003 Audi A4 4dr Sedan
220-horsepower 3.0L V6 5-speed shiftable automatic AWD
| 106000 mi | Ignition Coils replaced under warranty. |
| 62000 mi US $2800 |
CAT converter |
| 68000 mi US $1200 |
Fuel pump ... died in the fast lane |
| 50500 mi US $190 |
The gas pedal position sensor malfunctioned, causing the car to accelerate out of control. I needed to put the car in neutral in order to get it stopped! The part failed just 500 miles after the warranty ran out. The total repair cost was $190. |
| 208320 mi C $2000 |
Timing belt, rollers water pump Valve cover gaskets replaced Replaced flex joints in exhaust |
| 212040 mi C $350 |
Gas smell in cabin, replaced purge valve |
| 53465 mi US $800 |
replace two oxygen sensors |
| 54547 mi US $250 |
replace two crankcase breather tubes that had cracked |
| 108000 mi US $250 |
Yellow oil sensor display on instrument cluster. Replaced oil pressure sensor. |
| 99200 mi C $412 |
Front crankcase oil seal popped out of housing, massive oil leak. |
| 110800 mi US $200 |
I have the 3.0 V-6. Ignition coils were replaced Dec 2010 with new, improved design under recall. One of the new ignition coils briefly failed (set code). Replaced it. |
| 125500 mi | Ck engine light on intermittently. Code diagnosis indicates one catalytic converter needs to be replaced. Discussed with several mechanics and decided not to replace. No drivability issues and likely will not impact operation for a long time if ever. |
| 134300 mi US $1150 |
Replaced water pump |
| 140300 mi US $170 |
Replaced faulty crank position sensor |
| 145500 mi US $200 |
Replaced one faulty ignition coil. |
| 150300 mi US $700 |
Engine cooling module replaced. Fault prevented the electrically driven engine cooling fan from turning on. |
| 71000 mi US $1200 |
timing belt and steering pump |
| 66000 mi US $350 |
Exhaust system was making a loud noise. Took it to local mechanic who recommended a Meineke shop who would weld in a new piece. both sides of the car had to be done. |
2003 Audi A4 4dr Sedan
| 67580 mi A $2500 |
Replaced all known parts that fault after 100000kms |
2003 Audi A4 2dr Convertible
turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD
| 51300 mi US $900 |
Leaky gasket |
| 60000 mi US $389 |
Oxygen sensor faulty, Replaced. |
| 77000 mi US $25 |
Replace temp sensor because readout was intermittent |
2003 Audi A4 2dr Convertible
220-horsepower 3.0L V6 6-speed shiftable CVT FWD
| 83300 mi US $202 |
Coil #2 replaced |
| 44000 mi US $14500 |
Replace the coil packs, oil change, and replace 4 tires. |
| 49000 mi US $1700 |
Check engine light on. Car 'spluttering' at idle. New Cam Shaft seals identified as problem area. |
2003 Audi A4 / S4 / RS4
turbocharged 4-cylinder diesel manual 2WD
| 138880 mi €275 |
Tensioner pulley which tensions auxillary belt for power steering, compressor and alternator went faulty. Front bumper and radiator had to be removed to get at the tensioner! |
2003 Audi A4 / S4 / RS4
Engine not specified
| 62000 mi US $1200 |
Timing belt replaced due to water pump leakage, and valve seal replaced due to oil leakage. |
| 43000 mi | Carmax told me I had engine sludge. Audi mechanic looked at oil cap, said it was bad sludge, but after two days with my car they said it was normal. Also replaced cupholder, battery, ball joint, and flushed brake fluid. |
| 138880 mi $1700 |
camshafts got broken (2.5tdi) with automatic gearbox, that was weird |
2003 Audi A4 / S4 / RS4 4-door
turbocharged 4-cylinder diesel manual AWD
| 280240 mi €300 |
Intercooler had a crack, needed to be replaced. |
| 318680 mi €100 |
The syphon tube where the dipstick goes cracked and had to be replaced. Coolant pipe perished and cracked |
| 324260 mi | Intercooler replaced after crack appeared. |
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