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2004 Audi A4 / S4 / RS4 Engine Problems and Repair Histories

Don't infer 2004 Audi A4 / S4 / RS4 problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.

Percentage of 2004 Audi A4 / S4 / RS4 repairs by problem area

48% of the 2004 Audi A4 / S4 / RS4 repairs were to the engine, 6% to the transmission, 6% to the brakes, 13% to the suspension, 22% to the electrical or air-conditioning systems, 3% to the body and trim, and 2% to other areas of the vehicle.

Chart based on 356 repairs.

2004 Audi A4 / S4 / RS4 engine repair cost distribution

Of the 2004 Audi A4 / S4 / RS4 engine repairs that were not covered by warranty and were not do-it-yourself repairs, 11% cost less than $100, 35% between $100 and $499, 28% between $500 and $999, 18% between $1000 and $2499, and 9% more than $2500.

Chart based on 101 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 Engine problems and repair histories. Log in or join us to see them all.
Repair costs are in local units.

2004 Audi S4 4dr Sedan

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

Audi S4 in Illinois, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Feb 2009 38000    
39000 1200 Driver side auxiliary radiator and associated hose(s). 
 
Audi S4 in British Columbia, Canada
Date Odometer
(in miles)
Cost Problem/Repair Description
Feb 2009 35960    
37820 0 Replace one coil. 
42160 0 replace one cat 
49600 1500 leaking aux rads 
59520  

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2004 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in New Jersey, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Nov 2008 48000    
52000 350 Passenger side auxilary radiator.  
69000  
Audi S4 in California, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Feb 2009 55000    
60000 125 I noticed a leak in coolant, a pressure test was conducted but no leak found, found to be a possible overfill issue. 
64000 0 Oil/coolant leak. 
Audi S4 in Maryland, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jul 2008 46000    
52000 60 Ignition Coil went bad and was replaced by me. 
54000 50 Another Ignition coil went bad. Replaced in an hour by me. 
66000 300 My fuel pump died. Part was replaced by me. 
69000 0 Auxiliary radiator was leaking. Part replaced by me. 
81000 50 One of my O2 sensors went bad and i replaced it myself. 
 
Audi S4 in Puerto Rico
Date Odometer
(in miles)
Cost Problem/Repair Description
Dec 2008 21000    
21000 310 Mass Air Flow was replaced. 
39000 0 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

Audi A4 in California, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Sep 2007 38000    
50000 1090 needed new water pump as fluid was leaking. got new timing belt too! 
51000 250 coolant temp thermostat replaced 
67000 200 Fuel pump died, pump was replaced and fuel filter was replaced 
71000 70 Leaking hoses to be replaced 
 
Audi A4 in Maryland, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Sep 2007 42000    
62000 0 Fuel pump died. Replaced under CPO warranty 
64000 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 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.  
103000  

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2004 Audi A4 / S4 / RS4

Engine not specified

Audi in New Jersey, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Sep 2007 110000    
113000 0 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. 
 
Audi in Alberta, Canada
Date Odometer
(in miles)
Cost Problem/Repair Description
Feb 2008 33480    
34720 300 Computer lost settings, had to be reflashed. 
 

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