| 1 | 0 | 3 | 4 | 3 | 4 |
2008 Audi A4 / S4 / RS4 repairs by problem area
Engine (52%)
Transmission and Drivetrain (4%)
Brakes and Traction Control (2%)
Suspension and Steering (10%)
Electrical and Air Conditioning (18%)
Paint, Rust, Leaks, Rattles, and Trim (11%)
Other (4%)
Chart based on 389 repairs.
2008 Audi A4 / S4 / RS4 engine repair cost distribution
$2500+ (6%)
$1000 - $2499 (15%)
$500 - $999 (14%)
$100 - $499 (21%)
< $100 (44%)
Chart based on 164 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2008 Audi S4 4dr Wagon
340-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 35960 mi C $100 |
leak in valve cover gasket |
2008 Audi S4 4dr Wagon
340-horsepower 4.2L V8 6-speed manual AWD
| 55000 mi US $1100 |
Needed replacement of rear timing chain housing |
| 81000 mi US $300 |
Coolant bottle replacement (cracked/slow leak) |
2008 Audi S4 4dr Sedan
340-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 73160 mi | Engine mount has some kind of sensor that gave a code, so they replaced the engine mount at the used car dealer where I bought the car. |
| 42000 mi | ignition coil replacement Replace ignition coil on cylinder 1. Covered under warranty |
| 48000 mi US $500 |
Replace serpentine belt |
| 79000 mi US $2400 |
oil stand gasket. oil filter housing gasket, intake manifold gasket. R&R Cooling system; expansion tank; radiator hose expansion tank hose. R&R Valve cover gasket, left and right |
2008 Audi S4 4dr Sedan
340-horsepower 4.2L V8 6-speed manual AWD
| 72540 mi C $8000 |
cam shaft seizure on drivers side(Canadian) driving at about 120km's on highway ,felt like front tire blew out.every light on dash lit up,originally thought timing chain problem.purchased and installed new head(rebuilt)new tensioners and guides,chains,clutch few other items. |
| 78740 mi C $6000 |
had to replace timing chain ,tensioners,cam phasers.Just replaced all this little over a year ago.Garbage parts,very bad engineering and an absolute waste of money.I will never purchase an Audi product !! Buy a Lexus,I'm dead serious,Research and development surpasses every other manufacturer. The Audi A4 is the number 1 Towed vehicle on the planet. |
2008 Audi S4 2dr Convertible
340-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 87000 mi | Took in for power steering leak. Dealer couldn't find, but "found" multiple oil leaks. After bringing car home from dealer, check engine light came on. Fixed at no charge. Don't know if caused by previous work. Overall, I had to take the car back and forth to the dealership 4 times in 10 days. |
| 92000 mi US $1028 |
Had to replace two O2 sensors |
| 100300 mi US $250 |
I smelled gas when I parked in my garage after refilling the gas tank. The sender unit had a crack that allowed gas to leak from the tank |
2008 Audi RS4 4dr Sedan
420-horsepower 4.2L V8 6-speed manual AWD
| 70000 mi US $5000 |
Serpentine belt tensioner rubbed an hole in the oil cooler I think because of faulty installation when the car was at another dealer for earlier work. Audi of America and the other dealership disagree... Tensioner, belt, and cooler replaced. |
| 87300 mi US $1150 |
Check engine light came on. Diagnosed as leaky vacuum line and repaired. 75k service also performed, as well as replacement of underbelly tray. |
| 85000 mi US $2500 |
throttle body failed. replaced with remanufactured unit. oem part, but not audi-branded. |
| 93200 mi US $2000 |
Carbon deposits cleaned from intake system. |
| 97000 mi US $350 |
95k mile service and oil change. 1 hour to look for vacuum leak (source of check engine light). Could not find its source. |
| 105000 mi US $700 |
faulty intake manifold flap solenoid replaced. |
| 115000 mi US $1000 |
Oil pan was leaking from drain plug. After oil change, new drain plug with larger crush washer didn't fix leak anymore, so lower oil pan was replaced. |
| 116000 mi US $200 |
oil leak was fixed with new oil pan. spent a few extra days in the shop due to incorrect sealing. |
| 120000 mi US $450 |
oil change, alignment, a few warning lights that didn't amount to anything. fixing a bad alignment another shop did. |
| 37200 mi US $1200 |
Performed valve cleaning due to carbon buildup via direct injection system flaw. |
| 56000 mi US $100 |
Engine Replaced Due to Cylinder Wall Scoring |
| 31000 mi | car shut down while being driven. would not start and had to be towed to dealer. found faulty fuel pump regulator. |
| 32900 mi US $85 |
Slow to start and smelled fuel at start up. Replaced fuel pump and fuel filter. |
| 38000 mi US $1500 |
Needed a carbon clean. Normal maintenance for this engine. |
2008 Audi A4 4dr Wagon
turbocharged 200hp 2.0L I4 6-speed shiftable automatic AWD
| 62000 mi US $40 |
Gas cap open error and check engine light. It was the N80 valve that needed replacing. I saw that it was an easy fix, bought the parts from the dealer for $40, and fixed it myself in about 30 minutes. |
| 49800 mi US $340 |
Thermostat stopped working and engine would not get up to temperature. This triggered the check engine light to go on. The fix includes a new thermostat and and coolant flush with new coolant added. |
| 80000 mi US $531 |
Oil filter housing leaking where it connected to engine block. Housing removed and gasket replaced. |
| 49000 mi | Car had CEL for cylinder misfire. Seemed like bad coil pack but they had trouble getting the problem to occur again. |
| 74800 mi | new valve cover gasket |
| 43800 mi | Hissing noise under acceleration, possible small loss in power. |
| 55000 mi US $85 |
Broken engine mount |
| 58000 mi | Dealer never figured out cause of hissing noise under acceleration. |
| 61160 mi C $50 |
oil consumption |
| 64640 mi C $30 |
down one litre of oil - AGAIN |
| 71300 mi C $10 |
low oil |
| 89900 mi C $10 |
litre of oil -again! |
| 93000 mi C $600 |
multiple leaks in exhaust, replaced whole catback system thermostat failure |
| 94240 mi C $200 |
spark plug coil |
| 121000 mi US $620 |
Thermostat failed. Replaced thermostat and Coolant Temp Sensor |
| 126000 mi US $175 |
Replaced Coil Packs and Spark Plugs |
| 28000 mi | Leaking oil on valve cover. PCV Valve replaced with new revision. |
| 77300 mi US $50 |
Replaced faulty coolant thermostat. |
2008 Audi A4 4dr Wagon
turbocharged 200hp 2.0L I4 6-speed manual AWD
| 79000 mi | Would have needed a carbon cleaning in the near future. CEL on cold start, number of miles. It ran fine, but not for too much longer! |
| 36800 mi | Faulty control valve caused "check engine" light to come on. Could feel engine running rough and RPM fluctuate at idle above normal steady 750 RPM to a range of 1,250 - 1,750 RPM. |
| 56500 mi | Check engine computer light came on, dealer found fuel pressure sensor and exhaust gas sensor bad, fixed under extended waranty |
| 76000 mi US $1680 |
High pressure fuel pump drive cam came apart and destroyed fuel pump and camshaft. |
| 76000 mi | Check engine warning light on, seems to be misfiring, shop can't determine for sure problem, may need software update that they can't do, may need new #4 injector, or could be dirty valves. Will run valve cleaner through then have s/w check |
| 77000 mi US $500 |
#4 injector was replaced for same problem noted in Apr 12. This corrected the problem. |
| 24800 mi | Clutch switch failure meant engine revs increased when changing gear-manual trans; fault showed as error code from VCDS in ECU module; switch replaced under factory warranty; Dealer also performed scheduled 40000km service during this visit |
| 84320 mi C $99 |
Replaced 2 coilpacks |
| 89280 mi C $160 |
Oil Change and Air filter / Cabin Filter |
| 120280 mi C $4000 |
PCV replacement, intake manifold walnut shell carbon cleaning, turbo replacement |
| 55000 mi US $950 |
Intake Camshaft was damaged due to HPFP and Cam Follower failure. Replaced cam and HPFP with new OEM. Did a full timing belt service "while I was in there" but it wasn't strictly necessary. |
| 86800 mi US $70 |
Cam adjuster housing was leaking oil and the adjuster sealing rings were exhibiting signs of wear. Replaced the rings in hopes it would solve a low speed judder under acceleration. |
| 106000 mi US $60 |
Cam position sensor replaced due to non-start and CEL. |
2008 Audi A4 4dr Wagon
255-horsepower 3.1L V6 6-speed shiftable automatic AWD
| 60340 mi C $1500 |
Engine pump needed replacement |
| 61380 mi C $1800 |
cam shaft and chain tensioner replaced |
2008 Audi A4 4dr Sedan
turbocharged 200hp 2.0L I4 7-speed shiftable CVT FWD
| 45000 mi | Oil leak The oil light came on again and car was 1 qt low since 1 mo. ago. No sign of another leak. Filled and monitoring consumption will be next step. |
| 47100 mi | Rusnak Audi performed the second half of an oil consumption test and found that the car was consuming more oil than it should and they repaired seals in the engine which fixed the problem. They gave us a loaner car and repairs were free |
| 75800 mi US $1400 |
Cooling system, the water pump needed to be replaced along with the timing belt and the thermostat |
| 86000 mi US $50 |
Had to get new gas cap cuz of breach in vacuum system light came on to tighten cap but original cap kept failing so replaced |
| 78000 mi US $700 |
Cooling system; replace aux fan and thermostat |
| 86000 mi US $1500 |
Replace oil pump |
| 59300 mi US $150 |
Valve cover needed to be replaced |
| 100000 mi US $650 |
Thermostat replacement |
| 104500 mi US $1305 |
Replace auxiliary fan assemblies (right and left) as well as fan control unit |
| 107000 mi US $485 |
Check engine light--fuel metering system running too lean ar idle--replaced crankcase vent valve assembly |
| 103000 mi US $125 |
Thermostat failed open. Replaced thermostat and coolant |
| 53000 mi US $1900 |
Engine Mounts, 55,000 mi service, rotors & brakes |
| 71000 mi US $1200 |
CEL came on at 71000 miles. Turbo recirculation valve failed and was replaced. Also had to replace the front 2 engine mounts. |
| 87000 mi US $200 |
engine valve cover gasket was replaced. |
| 93000 mi US $140 |
Failing coil pack causing timing issues. Replaced all 4 coil packs and spark plugs myself. |
| 18000 mi | Higher than normal oil consumption at 1 quart per 1,000 miles. Gas mileage also below expected. Replaced 'flapper' valve. No, oil consumption and gasoline mpg up 20 - 25% |
| 65500 mi US $85 |
Motor Mount Replaced driver/front |
| 29000 mi | car stalled 10 times backing out of parking spot. nearly was towed, started eventually after calling tow truck. Audi wasnt certain of cause, sensors replaced, fingers crossed. |
| 27000 mi | Diaphragm in crank case valve was sticking. |
| 48000 mi | Car sluggish, loss of power, and RPMs dropping dramatically at stop lights. Fuel pump replaced. |
2008 Audi A4 4dr Sedan
turbocharged 200hp 2.0L I4 6-speed shiftable automatic AWD
| 42000 mi US $300 |
Thermostat replacement |
| 46000 mi US $700 |
Thermostat stuck open and not allowing engine to come up to temp at highway speeds. City driving was generally ok, but slow to warm up. |
| 47000 mi US $850 |
In-tank fuel pump failed. Car would start fine when cold but when running short city errands with several on/off cycles it would eventually fail to start. |
| 25000 mi US $1500 |
Fuel delivery system issue unresolved. Both fuel pumps replaced as well as fuel pressure sensor and problem still persisted. Dealer was moving on to replacing fuel pump control module but vehicle was totaled before it was installed. |
| 29000 mi | Crankcase gasket had a leak and was replaced |
| 41400 mi US $300 |
Tensioner squealing. They changed tensioner, rollers and timing belt. |
| 45300 mi US $100 |
Diverter valve bad |
| 73000 mi US $2000 |
coolant flange leak and various hoses replaced |
| 90000 mi US $2500 |
Oil pressure sensor replacement, oil change. |
| 7400 mi | Check Engine Light, Faulty low fuel pressure sensor. Check engine light (CEL). Faulty low fuel pressure sensor. Replaced under warranty. Free rental. |
| 28000 mi US $200 |
PCV valve failure... Replaced with aftermarket pcv valve catch can. |
| 78000 mi US $900 |
Timing belt and water pump replacement |
| 75000 mi US $800 |
Thermostat replaced |
| 104300 mi US $500 |
The car was leaking coolant |
| 108000 mi US $300 |
Engine misfire, change coil 2,3 |
| 75000 mi US $444 |
Thermostat failed. |
| 34000 mi | Replaced small valve from intake system; Audi service bulletin recently released |
| 67000 mi US $1000 |
Two different mechanics unable to identify issue. Engine Light on, emission error detected but unable to fix. |
| 22000 mi | Crank case breather hose needed to be replaced. Caused rough idle at start. This is a common problem with this model. |
| 27000 mi | I purchased the car used and squealing serpentine belt tensioner and belt included on the "we owe" list from the used car dealer. Rough idle. Audi dealer checked and replaced PCV valve. Noticed valve cover gasket leaking. Valve cover gasket replaced while I waited. |
| 46000 mi | Loud engine noise when car cold and large oil consumption |
| 80000 mi US $600 |
thermostat replaced |
| 38000 mi | The valve cover gasket was leaking, so dealer took it apart and replaced with new gasket. |
| 12000 mi | CEL came on; diagnosed as fuel low pressure sensor; part replaced; light has stayed out, car runs normally |
2008 Audi A4 4dr Sedan
turbocharged 200hp 2.0L I4 6-speed manual FWD
| 102700 mi | The car had to have a gasket replaced in the turbo unit and now keeps coming up with a check engine light. The gas cap has also been replaced. |
| 41000 mi | Malfunctioning PCV valve |
| 112000 mi US $250 |
Coil Pack replacements |
2008 Audi A4 4dr Sedan
turbocharged 200hp 2.0L I4 6-speed manual AWD
| 63000 mi US $75 |
Engine is consuming oil. Dealer took reading of oil level and instructed us to drive car for 1000 miles and return to dealer. Based on consumption, dealer will repair. |
| 64400 mi US $75 |
Repair related to December visit for excess oil consumption. They are replacing piston rings. Repair appears to have been unsuccessful as car is still consuming oil. Car returned to shop today (April 23rd)for further diagnosis. |
| 67000 mi | Engine continues to burn oil even after piston ring replacement. |
| 68000 mi | Follow up to earlier reporting oil consumption issues. Dealer finally replaced long block with new long block. |
| 80000 mi US $900 |
Return oil hose from turbocharger was leaking badly |
| 106000 mi US $2300 |
engine mounts replaced |
| 111000 mi | Took car back, replaced drive belt tensioner pulley which solved problem. |
| 36000 mi | broken breather valve in engine. too much oxygen going into engine. would not idle very well |
| 25000 mi | Crankshaft ventilation valve clogged. Caused valve cover gasket to fail. Oil sprayed on inside of engine bay. Some cars similar to mine had a recall on this part, mine was not one of them. |
| 111000 mi US $70 |
Misfire came from faulty spark plug |
| 110000 mi US $150 |
Engine sputter during heavy acceleration. |
| 115000 mi US $300 |
Broken motor mount and snub mount replaced |
| 132060 mi €400 |
Throttle body was damaged. Needed to change, and sensor to throttle body was broken also. |
| 13000 mi | There was a rattling noise coming up between 2000 rpm and 2600 rpm, which was initially diagnosed as a defective diverter valve. After it has been replaced, the noise is still there. The car runs a little bit hesitantly. |
| 32000 mi | Noticed less than 1 quart oil missing - oil level was half way between min and max. No CEL ever showed up - which is a good thing. Dealer noticed some oil stains on engine cover. Dealer diagnosed and replaced the PCV valve, everything under warranty. |
| 58700 mi | Car was idling roughly and not powering consistently. They replaced spark plugs and coils. |
| 60500 mi | Cleaning valve heads finally seemed to work. |
| 78000 mi US $2300 |
$2200 for 4 tires, oil change, alignmt, 75k check, and fuel filter (check engine light). Still needs $2200 timing belt replacement. Light came back on immediately - fuel sensor/pump TSB? Now to dealership. |
| 95000 mi US $6100 |
Cooling system repaired. Engine mounts fixed. |
| 40000 mi | Idle very irregular. Replaced PCV valve. |
| 4960 mi | fuel latch. not well repaired |
| 47000 mi | Replaced faulty O2 sensor. |
| 24000 mi | burning a quart of oil every 2k miles. Bad PCV assembly. PCV & valve cover gasket replaced |
| 24000 mi | Continued to lose oil. Replaced valve cover gasket & assembly. Problem hasn't returned. |
| 25000 mi | Fuel Pressure Sensor was replaced. Replacement did not help. |
| 41000 mi | Cam Shaft Follower Fuel Pressure Sensor was replaced. Replacement did not help |
| 41000 mi | Check engine light turned on after 4 hours of driving, 2 different times... car was driving normal. Audi said nothing was wrong and reset |
| 65300 mi US $85 |
Valve cover gasket replaced. |
| 68000 mi US $250 |
Vapor lock from -15F temps. Warmed up in mechanics garage solved problem and now drive it on the highway. |
| 97000 mi US $250 |
Thermostat needed to be replaced. |
| 115000 mi US $800 |
Replaced high pressure fuel pump. There was difficulty starting the engine in a few instances. |
| 128404 mi US $350 |
Replaced oil separator, gasket, and breather hose. |
| 137000 mi US $3000 |
Replaced all four fuel injectors; carbon clean of intake; replaced one ignition coil; Replaced oil filter housing due to leak |
| 140805 mi US $1000 |
Replaced vacuum pump Replaced accessory belt |
| 141710 mi US $4000 |
Replace high pressure fuel pump, fuel pressure thrust sensor, fuel pressure sensor, cam follower, vent hose, fuel pump relay, wire set, fuel pump and sender unit, fuel pump adapter, evaporative purge valve, low pressure fuel pump. |
| 144795 mi US $800 |
Replaced faulty turbo recirculation valve |
| 35800 mi | Oil spewing from bottom of engine. Valve plugged causing pressure on gasket. Fixed, repaired, replaced, cleaned. |
| 40000 mi | PCV valve failed and blew oil all over the engine cover. Was replaced under extended warranty. |
| 46000 mi US $85 |
Timing belt was making a screeching noise. It took 4 back to back trips to the dealer to get them to finally replace this under CPO Warranty. |
| 53000 mi | Car was burning oil at a rate of approx. 1qt/1000mi. Dealer was supposedly doing consumption test, but WAY overfilled the oil (2+ qts overfilled). Didn't end up fixing the problem. Will have to go to another dealer to resolve consumption. |
| 57000 mi US $80 |
Motor was drinking 1qt/1000 of oil. Dealer did oil consumption test and piston rings were going to be replaced. During the repair, scoring on cylinder wall #4 was discovered so the motor was replaced. |
| 54560 mi | CEL was on, changed gas cap and reset CEL |
| 62000 mi | PCV Valve problems. Free replacement at dealer as a result of warranty extension on part. |
| 63120 mi | Oil cooler began leaking oil |
| 77500 mi C $150 |
The vehicles camshaft follower failed and led to the destruction of the fuel pump and the intake camshaft. |
2008 Audi A4 4dr Sedan
turbocharged 160hp 1.8L I4 8-speed shiftable CVT FWD
| 32860 mi | Fuel pump. Car drivable but there was a huge loss in torque. |
| 37820 mi | Car was shaking in all conditions, the reason was broken mounts which were replaced. Engine mount replaced. Symptom: car shaking all the time on any gear, and made changing gear (automatic) feel a little lose. |
2008 Audi A4 4dr Sedan
255-horsepower 3.1L V6 6-speed shiftable automatic AWD
| 12901 mi | Check Engline Light on. Error reset and fuel additive added. |
| 27000 mi | Water pump failure, recalled part. Towed and repaired within 3 hrs in the middle of a snowstorm. |
| 28000 mi | Coolant was low, warning light alert. Audi checked the system under pressure to insure no leaks, all was OK, added coolant and good to go. |
| 55000 mi | Vacuum line was broken. Replaced it. |
| 63000 mi US $1050 |
Oxygen and MAP sensors replaced. Throttle body cleaned. Air filter replaced |
| 80000 mi US $925 |
The exhaust downpipe has rusted through after 14 years. The Midas technician welded new pieces into the existing system at an exorbitant rate. |
| 101000 mi US $908 |
Had a slight coolant leak, and it turned out to be front coolant flange. Also replaced the VVT solenoid seals, but that was fairly minor expense. |
| 84400 mi C $2300 |
engine severely misfiring, multiple fault codes, engine ran in limp mode. primary cause a failed, likely stretched, timing chain, one of the ones at the top of the engine, for one of the cylinder heads valve train. fixed most of misfire. secondary cause of misfire was severe carbon buildup in cylinder heads. cleaning the carbon build up fixed the last of the misfire codes, and the recommendation was to use the BG 44K every 6 months to keep it under control. |
| 97340 mi C $650 |
Replacement of leaking hydraulic motor mount |
| 97960 mi C $875 |
Failure of oil system leading to 1/2 engine shutdown. Was not repaired. Replaced vehicle. |
| 15000 mi | Check engine light on and engine started rough when cold. Engine light came on. Engine started rough with a cold start. |
| 18000 mi | Rough start with engine misfiring. |
| 26000 mi | Cold start is rough. One of the cylinders is misfiring. |
| 36600 mi | Some cylinders continue to misfire, particularly on cold start. |
| 44000 mi | Engine continues to randomly misfire on cold start. Since I was going to turn in the car--it's a lease--they just reset the engine warning light so that it would go off. |
| 44000 mi | Engine still randomly misfiring when turned in. |
| 13000 mi | Water pump replaced. |
| 27000 mi US $300 |
Carbon buildup was causing the engine to misfire in a couple of cylinders. A chemical clean out was needed. |
2008 Audi A4 4dr Sedan
255-horsepower 3.1L V6 6-speed manual AWD
| 35200 mi | Saturday morning I noticed a small leak. Later the car lost all coolant. Tuesday it was towed to the dealer and fixed on the same day. I had a loaner. Everything: tow/loaner/repairs were covered under warranty. |
| 30500 mi | Check engine light came on. Light went off after two days. Dealer checked computer and found a sensor malfunction |
| 13020 mi | Water pump broke |
| 86800 mi | Valve gasket |
| 89900 mi C $300 |
Vacuum tube |
| 127100 mi C $3500 |
Timing chaîn broke....,,,, |
2008 Audi A4 2dr Convertible
turbocharged 200hp 2.0L I4 7-speed shiftable CVT FWD
| 114000 mi US $2700 |
new turbo unit (was leaking oil into turbo air intake hose), |
| 55160 mi $850 |
The coolant in the radiator was running low and it was identified that the water pump had a leak on it and thus the coolant was leaking out. The water pump was replaced. |
| 37000 mi US $120 |
Oil leak |
2008 Audi A4 2dr Convertible
turbocharged 200hp 2.0L I4 6-speed shiftable automatic AWD
| 88000 mi US $120 |
Exhaust Flex Coupling leaking. Part replaced while I waited. Very quiet again under the vehicle. |
2008 Audi A4 2dr Convertible
255-horsepower 3.1L V6 6-speed shiftable automatic AWD
| 82000 mi US $90 |
Check engine. Misfire. Just swapped coil packs. Has not recurred. |
| 35000 mi | engine misfire |
2008 Audi A4 / S4 / RS4
Engine not specified
| 19840 mi | Carbon buildup - FSI engine (3.2l) |
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