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2004 Audi A4 / S4 / RS4 repairs by problem area

Engine (47%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (6%)

Suspension and Steering (13%)

Electrical and Air Conditioning (22%)

Paint, Rust, Leaks, Rattles, and Trim (4%)

Other (3%)

Chart based on 491 repairs.

2004 Audi A4 / S4 / RS4 engine repair cost distribution

$2500+ (9%)

$1000 - $2499 (18%)

$500 - $999 (26%)

$100 - $499 (31%)

< $100 (15%)

Chart based on 142 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten 2004 Audi A4 / S4 / RS4 repair histories. Log in or join us to see them all.

2004 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

39000 mi

US $1200
Driver side auxiliary radiator and associated hose(s). 
37820 mi Replace one coil. 
42160 mi replace one cat 
49600 mi

C $1500
leaking aux rads 

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2004 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed manual AWD

52000 mi

US $350
Passenger side auxilary radiator.  
60000 mi

US $125
I noticed a leak in coolant, a pressure test was conducted but no leak found, found to be a possible overfill issue. 
66000 mi Oil/coolant leak. 
52000 mi

US $60
Ignition Coil went bad and was replaced by me. 
54000 mi

US $50
Another Ignition coil went bad. Replaced in an hour by me. 
66000 mi

US $300
My fuel pump died. Part was replaced by me. 
69000 mi Auxiliary radiator was leaking. Part replaced by me. 
81000 mi

US $50
One of my O2 sensors went bad and i replaced it myself. 
21000 mi

US $310
Mass Air Flow was replaced. 
39000 mi The accessory belt for the alternator broke. Replaced belt and performed preventive maintenance by replacing accessory belt pulley and tensioner. Additionally, the spark plugs were replaced. 

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2004 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

50000 mi

US $1090
needed new water pump as fluid was leaking. got new timing belt too! 
51000 mi

US $250
coolant temp thermostat replaced 
67000 mi

US $200
Fuel pump died, pump was replaced and fuel filter was replaced 
71000 mi

US $70
Leaking hoses to be replaced 
62000 mi Fuel pump died. Replaced under CPO warranty 
64000 mi

US $50
Leaking bleeder screw on hard coolant pipe. Leaking cam chain tensioner/valve cover gaskets. Finally after 4th time mentioning it, do they consider it not normal and repair. 
95000 mi

US $100
bleeder check valve for the breather system and a couple of molded hoses were cracked. Caused rough running and check engine light, lean fuel codes.  

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2004 Audi A4 / S4 / RS4

Engine not specified

113000 mi Told I need a new engine because of excessive valve wear. Note: Dealer performed ALL scheduled maintenance on this car. Audi refused to particpate in the $10K cost, so I traded car for a Prius. 
34720 mi

C $300
Computer lost settings, had to be reflashed. 

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2004 Audi A4 / S4 / RS4 Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2004 Audi A4 / S4 / RS4 problems occur, check out our car reliability stats.