Problem Reports
Audi A8 Quattro
Report: Overheating Due to Failing Thermostat
Audi A8 Quattro Problem
Model Years Affected: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Engine Affected: 4.2L V8
Average Mileage: 95,388 mi (24,000 mi - 175,000 mi)
The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.
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Visitor, 2004 Audi A8 Quattro, 4.2L V8, 75,000 mi
Engine suddenly overheated significantly without any previous warning or coolant leakage. Failed thermostat replaced.
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Visitor, 2004 Audi A8 Quattro, 4.2L V8, 24,000 mi
Thermostat failed closed
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Visitor, 2004 Audi A8 Quattro, 4.2L V8
The the 2004 A8L with 64,500 suddenly overheated. I drove it home (about 3-4 miles) quickly and will bring it in or have it towed in for service tomorrow.
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Visitor, 2002 Audi A8 Quattro, 4.2L V8, 116,500 mi
Check engine light. Codes said failing thermostat. $871 to fix. Recommended same time do the timing belt, serpentine belt, and water pump with the thermostat, quote, $2065.
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Visitor, 2000 Audi A8 Quattro, 4.2L V8, 165,000 mi
Check Engine light on...told by local mechanic that thermostat is stuck open (or so I'm told)...also told it's very expensive to fix, since the whole front end needs to come off to get to it...no fix done.
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zedrick, 2005 Audi A8 Quattro, 4.2L V8, 26,000 miRookie
I had my Audi A8 Quattro 4.2L Parked in my heated garage for 6 weeks i drove it out and after about 15 miles it started running above normal temperature i had to turn the interior heater on to maximum to get the temp back to normal my audi main agent said i needed a new water pump and thermostat at a cost of £1675.53 i was not happy this obviously must be a manufacturers design fault i mean you would not think a £57000 car would need a water pump and thermostat after a mere 26000 mile and it is not soughted yet as i think Audi should rectify the problem or at least meet part of the cost.
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kdog, 1998 Audi A8 Quattro, 4.2L V8, 152,000 miRookie
my a8 qquatro overheats but does'nt read it on the gage. i had a new waterpump installed> it leaks a little somwhere on the left when parked and turned off and the cooling fas don't continue to cool it when turned off. don"
't know what to do please help.Flag ThisLike0 -
Visitor, 2004 Audi A8 Quattro, 4.2L V8, 79,500 mi
Failed Thermostat
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