With all the fluids your vehicle holds, it’s actually surprising that you don’t find things leaking more often that you do. Your vehicle holds various types and amounts of fluids from engine oil to windshield washer fluid. Based on the type and use of these fluids it’s surprising that your vehicle doesn’t leak more things more often. If you’re asking why your car is leaking water, then you’ve most likely got a leak in one of two places. We say “most likely” because there are odd times where it will appear that your car is leaking water when it actually isn’t. The two most common occasions are if your air conditioning condensate water and your cowl drains. Both of these drains exit your car in or close to the rear of your engine bay and aren’t actually leaks, but simply drains directing water away from the cabin of your vehicle. Your AC condensate drain will drip water when your AC has been running and it’s a warm humid day. Your cowl drains will drip water after you have used your windshield washers or if your windshield gets wet otherwise.
“Why is my car leaking water?” Probably the windshield washer or coolant system.
To help figure out why your car is leaking water, it’s important to understand the 2 systems in your vehicle that use water-based fluids. Those two systems are your windshield washing system and your engine cooling system. Your windshield washing system is made up of a reservoir where the washing fluid is stored, a pump, hoses to carry the fluid and the nozzles that spray the fluid onto the windshields.
Unless you’re using the windshield washer system, there is no fluid flow or pressuring in the system so it is very unlikely you would have a leak. The most common leaks in your windshield washer system is a crack in your fluid reservoir due to frozen washer fluid expanding and causing cracks. The best way to avoid this is to use windshield washer fluid that has a low freezing point. If you’ve already got a cracked reservoir, the best way to solve the issue is to simply install a new reservoir in your vehicle.
The other system that uses a water-based fluid is your engine’s cooling system. If your car is leaking water, then this system is most likely the culprit. Your cooling system is the most common leak source because it is a pressurized system. The high pressure can force coolant out even the smallest of leaks. Along with the high pressure, your cooling system is comprised of relatively fragile heat exchangers, hoses that can deteriorate or tear and other gaskets that can start to leak over time due to heating and cooling cycles.
If you find your car leaking water, it’s important to find the source of the leak to keep your car safe. If your cooling system gets low on water it can cause overheating which can lead to permanent damage. Often times it can be difficult to track down the source of water leaks in your car due to the amount of hoses and possible leak locations. One of the easiest ways to seal a leak and keep your car running properly is to use BlueDevil Radiator and Block Sealer. BlueDevil Radiator and Block Sealer can be easily added to your vehicle’s coolant and it will seal a leak in your radiator or engine block stopping the leak and keeping your car running safely.
For more information about BlueDevil Radiator and Block Sealer, click on the banner below!
You can also find BlueDevil Transmission Sealer at any of our partnering local auto parts stores like:
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78 responses to "Why is My Car leaking water?"
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I,m driving a 2005 4+4 kia sportage v6. It has now a problem of water leaks from this container where u pour water into which is opposite the wipes water container.Water just leaks and sometimes not.Or rather leaks and finished very soon.I don’t know whether this container has a hole or not.Briefly tell me what might be the cause or it must be replaced.
Mr. Zulu-
Thank you for asking about your Kia Sportage. Have you had the vehicle diagnosed at all? Are you having any other symptoms, such as overheating? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
My car is leaking water under mat on back left side set, it only leaks when it Raines.
Jamal-
Are you saying that rain water is getting into your vehicle and getting the mat wet or that you are losing water from the cooling system and it is getting the mat wet? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I have a Buick Lacrosse. Water leaks when I’ve had the AC on. I havent noticed it loosing water when checking the level. What would you say that is?
Nadia-
Are you losing water/coolant or refrigerant? It is common to have a little condensation dispense when running the A/C, as the condensate line drains condensation from the overflow pan to the outside or directly into a drainpipe. Feel free to contact our technical support line at 888-863-0426 with any other questions.
Thank you!
-BDP
Dear All, my car is smoking and anytime I poured the water always leaking. I just enough to park in the right place. What shall I do and what happen?
Fatnan-
Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
My car is leaking water from the front of the car. I dnt think it has anything to do with the a/c system cause the a/c was not running. Could there be a whole somewhere?
Tavia-
Is the vehicle overheating at all? Have you had to top the cooling system off with water/antifreeze? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
Got my 05 silverado having a leak. Every week or so i gotta top my coolant resvior with water.. it sometimes overheat whenever i need to had water. I just recently had put a new water pump in, but the water looks like its coming from my lower hose but than again its also dripping from above and coming down. Have no idea where to begin.
Dylan,
Thanks for your comment about your 2005 Silverado. There is a quick trick you can use to help pinpoint the location of difficult to find leaks like you have. Most auto parts stores sell a UV dye that is safe to add to your cooling system. The dye should come with a UV flashlight. Next, park your truck in a dark place where there is good ventilation so you can let the engine idle. Next, add the UV dye to your radiator, start your engine and use the UV light to search for the leak location. As the dye travels from your radiator to the leak location you should be able to see it with the UV flashlight revealing the location.
Thanks again for your question!
-BD Auto Pro
I have a 96Honda Accord it’s leaking water and coolant. From the bottom of engine. Just changed thermostat and radiator fan. Still Rus hot don’t hold any poured into radiator. Looks like it’s leaking in more than one spot.Open for suggestions???
Franchsa,
It sounds like you’ve got a pretty big leak. The most common leak area on your car would be from one of the plastic end tanks on your radiator so that would be a great spot to start looking for a leak.
Thanks again for your question!
-BD Auto Pro
hi my cars leaking water as soon as i pour the wayer in the reservoir the water comes out the bottom of the feom the front. and its also over revving all of a sudden. any suggestions ? thank you
Asif-
The leak you have described is larger than what BlueDevil Head Gasket Sealer is designed to seal. Unfortunately the only solution may be to have the parts replaced.
Thank you!
-BDP
Hi I have a Kia Picanto my issue is that there is a big water leak from behind the engine wat I have found is that every day I have to keep filling water which is not hold in en on another occasion I found that water was bubbling in the water bottle plz hlp
Mel-
Thank you for asking about your Kia Picanto. The BlueDevil Head Gasket Sealer isn’t intended for a large water/coolant leak. How quickly is the vehicle losing water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
My car is leaking antifreeze by my wheel well on the passenger side. I’m going through about 1/2 a jug a day and only leaks when the car is running not when the car is shut off. I have a little bit of heat, and sometimes full heat but that does not last long because the leak is so fast and once it goes down a little bit the nice heat stops. I’ve been told most likely the water pump. Any other ideas?
Karl-
It is possible that the water pump is leaking, given the location of the leak and associated symptoms. Unfortunately, it would be difficult to say exactly where the leak is coming from without being able to see the vehicle. Are you seeing any other symptoms, such as overheating? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I have a 2014 Impala and my car is leaking rain drops from the front what do you think this is?
Carmilea-
Thank you for asking about your Chevy Impala. Do you know where the leak is coming from? Has the vehicle been diagnosed? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
Hi driving a Runx 2003 model. fitted import engine not long ago…
now I see water leak from the engine right next to alternator..
I pour full 1.5ltr every trip +- 12kilos.
Please advice.
Jabulani-
Thank you for asking about your Toyota Corolla Runx. Based on your description, you may be losing water/coolant a little too quickly for the BlueDevil Head Gasket Sealer to be affective. In order to get the benefit of using the product, the vehicle would need to be able to maintain idle for 50 minutes, and you shouldn’t be losing more than about a quart during that 50 minute run. A hard part repair may be your best option.
Thank you!
-BDP
Hi I’m driving a Opel Astra 1995 model, when you pour water into the radiator .. it leaks the water from a small circle in the engine
Mzomuhle-
Thank you for asking about your Opel Asra. Based on your description, we recommend using the BlueDevil Head Gasket Sealer (https://store.gobdp.com/head-gasket-sealer-38386/). As long as the vehicle will maintain idle for a full 50 minutes, and you are not losing water too quickly, you would be a good candidate for the product.
Thank you!
-BDP
I’ve got a 2011 Ford Escape and I’ve just found some type of liquid dripped onto my driveway from under the rear bumper. I looked under and there is a no line or hose near it, but I see a droplet forming on the undercarriage. The spout for the gas tank is nearby but when I smell and touch the liquid it doesn’t feel like anything in particular and doesn’t smell either. Not sure what it is. Any advice?
Allen-
Thank you for asking about your Ford Escape. Is this occurring after you have been running the A/C? Based on your description, it is possible you are seeing the condensation/water run off from running the A/C. You can check your fluid levels to make sure you aren’t losing any oil or fluid and continue to monitor the fluid levels.
Thank you!
-BDP
I have a 1999 Buick century it’s leaking water from under the car but don’t know from where
Orlando-
Thank you for asking about your Buick Century. Are you noticing any other symptoms, such as is the vehicle overheating? Does the water/coolant level appear to be low? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
Yo, I have a 96 firebird. I just recently changed my water pump, which did not work. When I Pour Water Into My Car It Come Running Out The Bottow Like I Never Put Water In The Car!! It starts drives for about a couple min and over heats. Itll start smoking from the back of the engine, what could cause that?
Nathaniel-
Thank you for asking about your Pontiac Firebird. Based on your description, it sounds as though you are losing water at a pretty substantial rate. The smoke is most likely coming from the water you are losing hitting the back of the engine and creating smoke. We recommend bringing the vehicle into a certified ASE mechanic for a proper diagnosis.
Thank you!
-BDP
I am driving a 2008 Chevy Cobalt, and today was a really hot day. I noticed a link underneath the passenger side of my car. A pretty good puddle; I saw water dripping, or maybe coolant/water dripping directly under the passenger floor board. Is this something your product can help?
Jennifer-
Thank you for asking about your Chevy Cobalt. As long as you are not losing water/coolant too quickly, you would be a good candidate for the BlueDevil Head Gasket Sealer. Be sure to follow the cooling system capacity table on the back of the bottle to ensure the proper amount of product is used.
Thank you!
-BDP
I have a 2007 dodge nitro I can smell the anti freeze but not over heating and I just put oil in it and it waste a little could that be the problem
Natasha-
To confirm, are you saying you are getting antifreeze into your oil? If so, you would be a good candidate for the BlueDevil Head Gasket Sealer. You would want to change the oil before and after the BlueDevil procedure.
Thank you!
-BDP
There is water leaking from under my 97 Isuzu Trooper. Its at the back of the engine. It was about to run hot when i noticed it. Where would this be coming from?
Shelli-
Thank you for asking about your Isuzu Trooper. How quickly are you losing water? Are you noticing the water leaking after the A/C has been run? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I just noticed my car leaking water today never saw this problem before it’s very cool out not humid but I was running the heater sitting in my car in lunch break when I got out I noticed the water I have a 2009 Honda accord should I take it to get checked out
Mariea-
Thank you for asking about your Honda Accord. Did the vehicle start overheating at all? Are you noticing any other symptoms? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
hi
I have a Toyota camry my car is leaking water when I put heater on
I need to know why
Ahmed-
Thank you for asking about your Toyota Camry. Have you noticed any issues with getting heat when you put it on? Have you had to add water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I have a 2014 Chevrolet Cruze Lt and notice that when it rains water leaks onto the floor near the glove compartment. What could be the cause of that?
Zay-
Thank you for asking about your Chevrolet Cruze. Is the vehicle having any other issues, such as overheating or noticeable loss of water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I ran over a rock on my way to work and now my car is leaking water underneath on the passenger side near the rear of my motor. It is a 2003 honda accord. what could be leaking?
Robert-
Thank you for asking about your Honda Accord. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I had no previous leaks in my car besides the coolant reservoir. Well, I got a new reservoir yesterday and now my car is leaking a car Fluid from the back of my engine. It’s a 2011 Malibu. I am about to pull my hair out because I don’t understand how a simple part that was replaced caused something else to leak.
C-
Thank you for asking about your Chevy Malibu. To confirm, you are losing water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
Hi I have a proton gen2 and had water leaking near the belt n makes a plastic kinda noise what do you think is the problem
Gavin-
Thank you for asking about your Proton Gen 2. How quickly are you losing water? Is the vehicle having any other symptoms, such as overheating? Based on your description, it is possible your water pump is leaking onto your drive belt. We recommend taking the vehicle to a certified ASE mechanic for a proper diagnosis.
Thank you!
-BDP
I drive a 97 Ford Expedition.. I have to keep putting water and antifreeze in and seems it what’s to leak, coming from the passenger side behind/close to the tire.. always having to check the water and seems to be low each time. The car isn’t overheating and I don’t run the a/c. Why is this occuring?? I hear meaning reasons what it could be but just need an answer on what to do
Kristie-
Thank you for asking about your Ford Expedition. Based on your description, we recommend using the BlueDevil Head Gasket Sealer. The Head Gasket Sealer would also treat leaking blocks, heater cores and freeze plugs, which may be where the leak is coming from. Feel free to contact our technical support line at 888-863-0426 with any other questions.
Thank you!
-BDP
i got a Peugeot 206 cc 1.6, i topped my coolant up as it ran low a day later had to top it up again. i looked under the car and seen water dripping. i turned on the engine to get the coolant running and the fluid started dripping faster. do you have any ideas on what this issue could be ?
Colin-
Thank you for asking about your Peugeot 206 CC. Unfortunately, it would be difficult to say where the location of the leak is, however, it does seem that you are losing coolant pretty rapidly. Are you having an issue with overheating? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
My 2010 vw cc sport is dripping water underneath the car behind the radiator. I have to put water in Reservoir about 3 to 4 times a day can you please tell me what I can do
Jamie-
Thank you for asking about your Volkswagen CC Sport. Based on your description, you may be losing water a little too quickly for the BlueDevil to be effective. Have you had the vehicle diagnosed? It could just be a loose hose connection or a crack in one of the hoses, which replacing the hose would solve the issue.
Thank you!
-BDP
Can I use that stuff that stops leaks? If so do I put it in the Reservoir??
Jamie-
Yes, BlueDevil Radiator & Block Sealer will work to seal coolant leaks.
If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there; do not pour it into the reservoir. It may be added into the hose or the opening on the radiator. Once BlueDevil has been added, reconnect the hose and start the idle from that point.
Thank you!
-BDP
My 2015 VW Jetta link a little bit of water after being driven, it can take around 5 minutes, Seens all along my car uses anti coolant from VW and there was no link, now the level of coolant was low, I have used water. My car is not over heating, not loosing water, I am not sure whether is water evaporation that cause that although my A/C is off. Please advise if there is something that need to be done
Pfumelani-
Thank you for asking about your Volkswagen Jetta. If the coolant level was low, it is a pretty good indication that you are losing coolant. Have you noticed any water/coolant dripping to the ground or any other symptoms? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
This one has me scratching my head… I have a 1999 Buick Century and I noticed today that I had a pretty healthy pool of water under the car. It appeared to be clear water. I checked the radiator and it was full. Rolled it up on the ramps to find the culprit and it’s dripping out of the AC drain hole. It’s the middle of December and the AC hasn’t been on in a couple of months.
I put a clean can on the floor to collect what was dripping and it is clear water. I thought I might have some type of blockage and pulled the wiper tray and fresh air filter looking for signs of water… maybe a back up of rain water. Everything is dry. Any thoughts or suggestions?
Ricky,
Thanks for your question about your 1999 Buick Century. Our best guess is that the water was either dripping off the cowl down your firewall or that your ventilation system draws air from the cowl and is designed to allow water to exit through the ventilation system condensate drain. The only thing we would recommend doing is checking your blower motor and resistor to make sure they aren’t getting wet.
Thanks again for your question!
-BD Auto Pro
Hi I have a 06 ford fiesta and I seem to be losing water, but iv changed the thermo stack hose and thermo stack it self and bleed the radiator as well ,theres no water in my oil but I’m still losing it
Chris-
Thank you for asking about your Ford Fiesta. Have you noticed a bubbling or boiling sound in the coolant reservoir? Is the vehicle overheating at all? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
Hi. I drive a Hyundai i10. My car got overheated yesterday, and when I added water to the radiator, I noticed it was leaking almost swiftly underneath. What can I do to stop the leak?
Oti-
Thank you for asking about your Hyundai. Unfortunately, if you are losing water just as quickly as you add it, we do not manufacture a product to seal a leak of that size. Try checking for loose hose connections, as it’s possible that a hose not being clamped properly would allow the sizable loss of water you’re describing.
Thank you!
-BDP
My truck is an 03 gmc Sierra v8 5.3 2 wheel drive I put water in the part antifreeze post to be at till I can get it but I just drove down the road n it start pullin the water out what wrong with it
Cody-
Thank you for asking about your GMC Sierra. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
I have a 2014 Hyundai Sante Fe Sport. I have a dripping water leak by the front wheel well. It leaks while the car is shut off. Not sure if it leaks when running.
Rich-
Thank you for asking about your Hyundai Santa Fe. How quickly are you losing water? Is the vehicle overheating at all? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
A car hit my car from back now my car when park water leaks out.what should I check?
Roma-
What kind of vehicle do you have and how quickly are you losing water? Typically, a rear end collision would not cause a water/coolant leak. Have you noticed if the temperature gauge is showing higher than normal? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
My car drips water on the left infront of the wheel. What can it be? Its a toyota runx 2004
Masiu-
Thank you for asking about your Toyota. Is the vehicle overheating at all? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.
Thank you!
-BDP
After running my ac my car drips water from under the front passenger side of the car for over an hour is this normal
Ryan-
Yes, this sounds normal, as the water leaking is most likely condensation from the cooling mechanisms of the a/c.
Thank you!
-BDP
I got in a small accident and now water drips from right behind my radiator fans, from a clip that connects to the assembly. Is this a serious problem?
K.J.-
Replacing the clip, in itself, would not really be considered a serious problem. If left untreated, the loss of water could lead to issues within the cooling system or the engine and would lead to a much more serious problem. Hope this helps!
Thank you!
-BDP