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Audi A3 Overheating/ Coolant problems

by dromona / October 10, 2005 11:08 PM PDT

I have a 1998 Audi A3 1.6, which i drive approximately 100 miles per day. Recently its started to overheat & lose coolant when i drive over 70mph (which is about 10 mph slower than the rest of the roads on which i drive).

I've had the car serviced regularly and the local dealership garage told me i had a leaky radiator which would cost over

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Dual Water Pumps...
by jaydoubleyou / October 12, 2005 8:32 AM PDT

This may have already been looked at by the dealer, but I had almost an exact experience with my A6 2.7T early this summer. Coolant mysteriously dissapearing, spikes in temp at high speed, etc. I took my Audi to the dealer a total of 4 times to complain, and on my fourth visit they discovered that my secondary water pump was fouled and would need to be replaced. Audi Assured took care of the cost of replacement for both pumps...
Maybe the A3 has a similar setup? Good luck.

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Dual water pumps
by dromona / October 12, 2005 7:04 PM PDT
In reply to: Dual Water Pumps...

Thanks for the pointer. I'll try and check if the A3 has a similar setup. Your experience sounds just like my problem, so heres hoping!!!

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I have this problem too - has anyone found the solution?
by dodgrlvr33 / May 24, 2006 7:15 AM PDT
In reply to: Dual water pumps

I have the exact same problem described in the original post on an Audi A2. I lose coolant at motorway speeds and the temperature guage shoots up to 90 for brief period of time and back down again. I have taken it to the garage twice and they have replaced the water pump and another part, but still the problem persists so it would be good to know if anyone has found a solution to this as its a big problem for me.



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audi a3 2.0 fsi 53 new shape
by smithy262866 / October 19, 2008 12:14 AM PDT

hi there,after reading the posts,it seems i have a similar problem regarding the coolant.

i baught the car a few month back and have been having endless problems with the temperature guage and fan coming on.

when i start the car up the coolant light come on and bleeps,and the fan starts going sounding like a wind turbine.

however once been driving some times the needle shoots from 0 to 90,but then also sometimes drops back down to 0 causing the fan to come on again.

i have also found out sometimes after driving the car for a few mile,with the coolant light on and fan going,if i stop the car and take the key out of the egnition and then restart the engine the needle shoots back up to 90degrees.

i find it possible that wen turning some corners or going over bumps it can either send the light on n temp down or the opposite,unless this is just by chance

i dont want to get ripped off by an audi dealer and would be much appriciated if any one has had any previous experiance of this to help me out or could suggest parts to maybe try replacing

it is an audi a3 53 plate so the new shape fsi 2.0
thankyou regards Lee

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You are not alone
by jmeager / January 17, 2006 3:46 AM PST

your comment made very interesting reading and i can relate to it so much.

I brought an approved audi A3from a dealership in August '05. It is two years old and has only done 16,000 miles.
So not too much wear and tear.

Within weeks the car started losing all it's coolant.

The car has been in for "tests" at least five times now. and each time they tell me there is nothing wrong with it and send we on my way.

coolant topped up of course!

They have done pressure tests, head gasket tests and even changed the water tank. No leaks!!!

Yet the problem persists. I had to fill it up twice over the weekend when doing a round trip from Birmingham to Sheffield.

I have started getting serious now by threating futher action. I shouldn't have to keep topping up my coolant levels daily when it is such a prestigious car.

If anyone else has this problem or any clues what causes it then please please let me know.

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Audi A3 losing water!
by keithhodgson / April 28, 2006 9:42 PM PDT
In reply to: You are not alone

good day i also have a 2000 A3 TDI 1.9 which is losing water from the overflow on header tank, however my local audi dealer has had the car in noumerous times now and they have done all diognostic checks to no avail and keep giving me the car back saying there is no problem,
the car still needs a litre of water daily.
i am now unsure about what to do.


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Oil in Coolant and Water Disappearing!
by JackTheLad28 / February 12, 2009 11:11 PM PST
In reply to: You are not alone

Hi (this is a long message but very interesting towards to end)

I have an Audi A3 2003 petrol. Last year I had this strange problem where the coolant needed topping up every 2 or three 3 days. My mechanic fixed this at a charge of

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Any Reply
by Germy1994 / May 6, 2006 4:06 AM PDT

I'm Wondering if you have had any reply on the problem on your Audi. I Have a Audi A3 1.8T and I am getting the same problem.

Place let me know

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by JohnnyShoestring / May 8, 2006 2:57 AM PDT

here it's difficult to say, what might be peason for that... i believe you should find another Audi dealer.

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Audi 90 2.3E 1990 me too!!!!!!!
by fogsmith / July 15, 2006 12:55 PM PDT

I had a total coolant loss some 6 or so weeks ago. I got the car towed to my local Audi specialist (the most expensive too!) Overnight they performed a series of diagnostic tests and found no leaks, blockages or damage to the engine structure. They replaced a thermo switch and told me All was good.
Since then, of course, I have to add water, sometimes up to 4 - 5 litres every few days; occasionally daily, but lesser amounts. If it ain't broke why does it so obviously need fixing?

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Audi A3 1998
by scottieleslie / October 4, 2006 4:26 PM PDT

Yesterday, I took my 1998 Audi A3 to my local mechanic.
He said it had a blown head gasket, because it had muddy water in the resevoir. The car has been losing coolant since I bought the car second hand last year, but has never gone over 90 degrees on the temp gauge. Car was not running rough, and I was shocked when he said it was a head gasket problem. I called him to tell him to stop pulling the engine apart, and to check the water pumps, as per a previous forum response. Will let you know what I find. I'm going to ring Audi Australia now, to talk about reimbursement for costs.

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coolant mix
by itujjp / November 13, 2006 2:02 PM PST
In reply to: Audi A3 1998

That sounds to me like someone has mixed green coolant with the standard purple G12+ coolant, nothing to do with the head. I have had to flush an A4 recently because of the same problem.

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by jc_tokyo / October 27, 2007 5:21 AM PDT
In reply to: coolant mix

I have an Audi A4 quattro 1998, witch is better green or the pink coolant, i know the green are mostly for sale in auto parts stores and the pink for boats and RV's....

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Any luck?
by eeveleigh / December 6, 2009 10:23 PM PST
In reply to: Audi A3 1998

My car (AUDI A3 2005 TDI) is doing exactly the same thing and the garage are saying it will be a

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Audi A3 Overheating/ Coolant problems
by markdevas / October 20, 2008 5:54 AM PDT

The cooling system of your Audi is composed of many high quality parts. One is the Audi radiator, which is the primary component responsible for dispensing the heat that the coolant absorbed from the engine. Another is the heater core which serves as a secondary, albeit smaller, radiator. Then there are the radiator hoses and the pressure cap, all functioning to aid cool the engine in one way or another. And lastly, there's the Audi coolant tank.

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A3 overheating/coolant problems
by humbleplumber / February 18, 2011 6:49 AM PST

Don't forget the OIL COOLER, which by the sounds of it, is the source of all your problems

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A3 water problem
by glynl / November 10, 2009 9:44 AM PST

I also have a 1998 Audi A3 and Im losing coolant did you get it sorted and if si what was the problem, im filling mine up everyday and I have taken it to two mechanics and they cant find the problem
Many thanks

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Thank you for convincing me NOT to buy an Audi
by Dan Filice / February 19, 2011 7:58 AM PST

In the next year or so, it's time for me to buy a new car. I love the looks and style of the Audi cars. I've read several forum posts on the Web with many people complaining about the coolant problems. Not that it matters to Audi, but they've lost one

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same problem
by kianicj / February 23, 2011 12:54 PM PST

im sure not if anyone here has fixed the problem etc.
but i had the same problem with my 1994 audi 80 b4.
overheating, lght flashing, but no probs with hed gasket or leaks etc etc.

we found the problem ourselves.

we put the car on ramps, and suddenly realised that the floor inside my car had filled with coolant/water!!! there was a massive leaking coming from behind the dash behnd where the heaters and a/c is. we could see coolant coming out very fast from a part where the heating is turned from cold to hot on the controls.
although i still havent got it fixed, as i dont know what that part is called??!! if anyone could tell me what the part is tha would be great!

hope this helps!

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Part Name
by Dan Filice / February 25, 2011 5:23 AM PST
In reply to: same problem

I think what you have is a leaking Heater Core. It is basically a small version of your radiator, but instead of cooling the engine's hot water, it lets hot engine water into the core and heats up with hot water from the engine. Many cars end up with leaking heater core. What's difficult to answer is why many newer (too new to have this problem) Audi's and Porsche's have the mysterious leaking coolant problem.

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AUDI A3overheating/coolant problems
by defixa / July 11, 2011 3:49 AM PDT
In reply to: same problem

your heater core needs to be replaced. good luck

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(NT) overheating
by javz2envy / October 12, 2011 10:36 PM PDT
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(NT) Waaaaa! exactly al you says are also what happen to my 14
by Rochoco08 / July 31, 2016 2:41 AM PDT
In reply to: same problem
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(NT) My 94 audi 100 got overheating, when i open the hood and c.
by Rochoco08 / July 31, 2016 2:49 AM PDT
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audi leak !
by owenm016 / May 23, 2012 8:52 AM PDT

hello i have a audi a3 i have a bad oil leak it looks like it is coming from the head gaskit but when i take it too a audi dealer ship thay say its somthing too do with the gear box .. ? so i have a look at the clutch plate there is nothing like a lead so i clean all of the engine out and everything else and after all it was the coolant . Do u have under your audi on the bottom sort of a oil tipe of lead its not a oil or radiator lead its coolant i drive about 20 miles a day too work and back and it just drinks it i get home and there is none in the bottle just a tat left in the pipes so if i was you do what i did jack it up drain all of your coolant and but new pipes in see if that helps !!! hope i was a help please reply ! Happy

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Radiator Coolant problems
by wenssi / August 20, 2015 12:09 AM PDT

Radiator problem are arise when internal engine coolant escape. In the case a defective radiator is not replaced, the overheating of the engine can potentially lead to serious internal engine damage.@yourmechanic

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Radiator Coolant Escaped- in blink of my eye -Why?
by Tawdry_Audi / August 21, 2015 10:23 AM PDT

Got in my Audi A3 Sportback 1.6L Diesel (2012) this morning with 28,000 miles on clock and set off for work. Within 5 minutes, message appeared stating coolant low, stop car and turn off engine and check coolant level.

I did. The coolant expansion tank was empty! I don't know why.

I thought Audi A3 Sportback 1.6L Diesel cars were supposed to be well-designed and built and were tested and checked meticulously using automated technology. They are evidently not that reliable! German technology is no better than Nissan cars built in the UK.

I took my car to the Leeds Audi Dealer for a annual service and an MOT about two weeks ago. They said it did not require a service and gave me an MOT. They charged a fortune for the MOT and for deciding that my car did not require an annual service.

How much will it cost to get the car repaired? What is likely to be the cause of the coolant leak? What are my options - I'm not a motor mechanic.

Look forward to suggestions. Thanks in advance. Disillusioned Audi driver.


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