general problems of the 2018 Honda Civic - part 2

My ac system completely failed in my 2018 Honda Civic. I took my vehicle into to service and I was informed that all 3 major components of the ac system is leaking refrigerant. The main problem being the evaporator has been leaking refrigerant into the car cabin. I have gotten spells of lightheadedness and the feeling that I will pass out and I believe the refrigerant leaking into the cabin is to blame. Honda is aware of the compressor and condenser and evaporator being prone to leaking but will only repair the compressor and condenser free of charge but not the evaporator. Honda is knows the evaporator is defective but does not want to admit it.

Faulty fuel door actuator. Replace fuel door actuator. And emergency latch within the trunk did not work. No way to open the fuel door to add gas.

The trms system constantly displays low tire pressure. I correct the tire pressure and reset the trms every time but it happens again and again. . The dealer has also reset the trms system, and in a few days it indicated that the tire pressure went down again. I have complained to the Honda dealerships and my mechanic. They’ve not found anything wrong. If the tires are good maybe there’s something wrong with the wheels. Although I have extensive receipts for all my maintenance and repairs, and I’ve frequently complained, they seldom indicate my complaints about tire pressure.

I have noticed recently that almost every time when I start the car, it stalls for a second then turns on. There were many times that the car will jerk when I accelerate after being stopped at a red light. The car seems to not have as much power as before. I feel as though I have to step on the gas more to keep up speed especially on the freeway. Fortunately, no accidents have occurred. I have not had the vehicle inspected because when I called my local Honda dealership, they said they did not have the parts to replace it. There are no warning messages or lamps. I cannot pinpoint the exact date I have noticed these occurrences but most likely for a few months now since January 2024.

The evaporator of the ac system failed at 48k miles. We live in houston texas and ac is not a luxury it's a requirement making the vehicle unsafe to drive in the extreme temperatures. Honda knows that this is an issue and has recalled both the condenser and compressor of the ac system to a ten year warranty. We're asking that the evaporator also be added to the recall. The cost of repair of the item is almost 1700 us dollars. It's a terrible situation. As the car is like new but out of manufacturers warranty being left with a ridiculous repair cost on a part that should last for the lifetime of the vehicle. I have a Toyota that is 13 years old and never had any issues with the ac system. Thank you.

A/c problem.

Unknown. I arrived to the grocery store and went inside to shop. About 45 minutes later I approached my vehicle and attempted to remote start it. As I approached my vehicle I saw it was on (assuming it was from my remote start). My car wouldn’t unlock. The trunk also wouldn’t unlock. My key fob was not dead as I went back into the grocery store and bought a new battery and replaced it. After that still did not work, I attempted to open my car door with the manual key included in my key fob. The manual key also wouldn’t work. At this point I realized my car was not on due to remote start. My car was actually running the entire time. I was stranded for 5 hours while I had to wait for my fiancé to leave work and travel to the part of town I was on. He was also unsuccessful with using the key. We had to resort to unlocking the door with a wire hanger by sticking it through the door. After we successfully unlocked the door, the car alarm went off and the key was working like nothing ever happened. I also want to mention we went home yo get my spare and the spare wasn’t working. How were all doors locked while the car was completely running. It burned a quarter tank of gas. I just wanted to make this report to note what happened.

Paint job on this vehicle is awful 3+ yrs ago it started peeling and flaking off now there is no paint on my side mirrors contacted Honda just to be ignored.

A/c doesn't work. Known defect and recall/warranty for compressor and condenser but Honda told me is was the evaporator. Entire a/c system bad and they won't cover the last part of the system under warranty.

I have an 2018 Honda Civic, twice now, my ac has stopped working. The first time Honda warrantied the compressor and now 2 years later, I'm having the same issue. I bought a Honda so I wouldn't have to worry about this kind of stuff. I'm going back to the Nissan.

Air conditioning not blowing cold air. Took vehicle to Honda dealer. I was told that a/c will need to be recharged with freon and dye, the cost is $299. 95 once recharged, the a/c will need to be re inspected for further leaks in the a/c system. The a/c compressor seal shaft and the a/c condenser, these two parts, the warranty has been extended by Honda. The a/c evaporator is not covered by Honda warranty. It is a well documented fact that Honda’s a/c systems on the 2018 Civic has defective components. It appears that the r1234yf refrigerant used in these systems is deteriorating the a/c components. Honda has responded to this situation by extending the warranty on the condenser and compressor seal shaft to 10 years from date of purchase. However, to date they have refused to extend the warranty on the evaporator and other components of the system. Typically, evaporator last the lifetime of a vehicle, or at least 10 to 15 years. It is unfair for Honda to charge $299. 95 to inspect a system that is known to be faulty, and to saddle the customer with another $2200. 00 if the evaporator is found to be leaking. The entire a/c system should be covered by the 10 year extended warranty. Because if the system is functioning as it should, there would be no leaks, and therefore no need to recharge with freon and dye.

1. Component/system: hvac evaporator core. Total loss of climate control. Vehicle is a 2018 model. Prior to this, it had the known ac condenser defect covered under TSB 19-091. The condenser was repaired under warranty, but the ac loop continued to have underlying issues. Failed evaporator available for inspection. For the 2018 Honda Civic specifically, there are over 600+ total consumer complaints filed with the NHTSA, and the overwhelming majority are dedicated exclusively to the failing air conditioning system. 2. Safety risk: immediate safety hazard from extreme environmental exposure. In regional desert temperatures exceeding 115°f-118°f, the complete loss of cabin cooling creates a severe risk of heat exhaustion, dehydration, and heat-induced physical impairment for the driver while operating the vehicle on public roads. Additionally, during high humidity, the system emits a chemical-smelling mist/vapor from the vents causing an acute burning sensation in the driver’s eyes. 3. Reproduced/confirmed: yes. Right Honda (scottsdale, az) inspected the vehicle and confirmed the evaporator leak on 07/11/2025. I have also observed the chemical mist/vapor emission, which was corroborated by a witness while driving in California. 4. Inspected by others: reviewed by right Honda service department. Escalated to american Honda motor CO. , inc. (case #16391364). Despite 5 years of ownership and previous failures in the same ac loop, the manufacturer refuses to cover the repair of this systemic defect. 5. Warning lamps/symptoms: no dashboard warning lamps. Initial symptoms began at ~59,857 miles with a gradual decline in ac performance, degrading to total loss of cooling at idle. Most recently, during high humidity, the system began emitting a chemical-smelling mist from the air vents, which causes a burning sensation in the eyes upon contact.

Ac does not blow cold air. I get dizzy when driving in the heat during summertime.

Safety hazard for vehicles in the state of florida. Honda Civic 2016-2018 models defective/failing ac system. Common failing components include condenser, compressor and evaporator. I paid for a new car and within the first few years of purchase the ac went out due to Honda’s faulty equipment. Per dealer recommendation replacing evaporator with expansion valve. $2200 to repair. This is a safety concern and hazard in the state of florida. Health reasons include being exposed to floridas heat for long periods of time. And with florida’s unpredictable weather conditions and rainfall, when it rains all windows including windshield fogs up which creates the inability to see which effects the driver and surrounding motorists. Honda has acknowledged the issue but only extended its warranty on the condenser and compressor. Not the evaporator. Which spacecoast Honda has stated they see more commonly the evaporator failing above all else.

When the car gets hot after about 10 mins of driving in spring/summer weather the steering wheel feels like it’s sticks and the steering gets very tight. I then have to over compensate to stay in my lane and it’s constant until you stop and allow the car to cool off again.

While driving on a highway my sunroof randomly shattered. There were barely any cars around me. Nothing his my sunroof it just shattered randomly.

Last July I had to have my ac condenser and compressor replaced due to one side of the air conditioner working. Bad part was I had to pay to have a recall fixed after the fact and now im trying to get american Honda to reimburse me my money. After 1 year the problem came back and now they are saying it's my evaporate coil. Honda is not taking this seriously and expecting people to pay several thousands of dollars to fix an issue that is their problem.

Air conditioner condenser needs replaced at 24,000 miles. Mechanic says he has worked on numerous exact models / similar year with same issue. Has there been a recall?.

My air conditioner has gone out for the 3rd time. Fits the air condenser is replaced, and then the evaporator core. Now stating the compressor. With a newborn baby infant my ac blowing hot air does not help and could cause a heat stroke! summer days are approaching in California which are dangerous.

My driver side mirror is very loose and wiggles/shimmys while the car is loving causing me to not be able to use the side view mirror. It’s not the entire mirror housing, just the reflective glass part. This is a serious safety issue! I have seen the recalls in other Honda models for this very reason but not mine.

I purchased a 2018 Civic that is showing severe paint failure around the mirrors and doors of the vehicle. This is an extremely common manufacturing defect that is documented through formal cases opened with Honda, consumer reports, news reports, and dealership inquiries. Severely flaking paint can cause blind spots and vision problems due to sun reactions to exposed metal, driving distractions as paint chips fly off vehicle, environmental pollution, and damage to critical components through rust and water damage.

First it was two hoses that had issues with the ac then the condensor wasnt holding anything in so it kept leaking out and my ac still wasnt working so Honda said the evaporator went out and said this is what Honda is known for and happens a lot. So my whole ac all these little parts kept going out and it cost me $4000 to replace all of them and to get it fixed. The evaporator is what cost $3000 to replace.

Turning the steering wheel requires more force because there’s resistance. It’’s possible to turn the wheel to the left, let go of it and it’ll stay in that direction instead of rotating back. This causes major issues on the highway and during heavy rain. The slightest adjustment causes overcorrection. It’s also accompanied by this creaky/clicking noise.

The paint on both of the side mirrors have began peeling. The paint on one of the door handles have began peeling. After research, I have found that Honda has been known for this same issue on prior vehicles due to improper paint laying technique. I contacted Honda automotives and they told me they wouldn't help me due to my vehicle not being apart of the prior "campaigns" to fix the paint on the recorded vehicles.

Ac not blowing out cold air.

Ac compressor and condenser are both broken or have leaked. They should cover both, not just one part. A lot of people with Civic owners are complaining with the same issue. Honda should cover all ac parts. P. S: im not sure if this is related but I smell like metal from the ac vent which is very bad for the health.

Service center states evaporator is leaking. The leaking ac components is a known issue to Honda who have issued a extended warranty for other ac component. R1234yf refrigerant is a flammable danger and leaking in the engine bay.

There crappy electrical systems and cause a fire! it’s breaks the ac system. Someone could die of heat related reason from driving in 95 degree weather. Damn you Honda!!!.

My a/c does not work. It has blown out warm or hot air since I bought it used in June 2022. Only the passenger side blew out cold air for a few months but now it's completely warm as well.

The ac compressor system is faulty and there are so many people with the same issue and Honda is doing nothing to address it other than say the condenser has issues when in reality it's the entire ac unit https://. . Read more...

The problem is compressor of the ac is faulty/damage. This is very common and I see a lot of people online having this problem. Its weird because they only warranty the condenser. Not compressor which is also affected by bad manufacturing. Please help bring this to light and let it fully covered all ac parts. Thank you in advance.

Same as everyone else. Owned the car for 4 years, ac stopped working. Wil take to dealer to see if it is covered under TSB 19-091. However even those who get it repaired are still experiencing failure. This should be a recall.

The car had damage because in the carfax they gave me on the left side of the car the shock absorbers fail and I always had that problem also the moldings the first time I cleaned it also fell apart at the time to revere and turn to the right when it is going back it has such an annoying noise.

2018 Civic hatchback with less than 18,000 miles on it - noticed a/c was not blowing cool air, so took it into dealership for evaluation. Was told the freon was low but the issue was not due to the condenser and would not be covered under the 2016-19 Civic a/c condenser warranty extension. Dealership said they looked at everything possible without disassembling through the dash and so gave me the option to either perform a diagnostic leak test/freon recharge ($400, with the caveat that the leak may still be there and this would be a temporary fix) or to replace the evaporator entirely ($1800). Unfortunately the car is no longer covered under factory warranty since it’s over 3yrs old. Does not make sense that for a vehicle that’s <4 years old with <18k miles this is an issue.

I am experiencing issues with my 2018 Honda Civic lx a/c. Here is the history of the a/c issues. December 2020 a/c stopped working and went in for maintenance for a check up. Told me condenser was leaking and needed to be replaced and was covered under warranty. However the condenser was back ordered and I couldn't get it replaced at that time. April 2021 condenser was in stock and went into the dealership to get it fixed on warranty. January 2022 a/c was blowing hot air again so I bought it back to the dealership. Was told the evaporator/compressor was leaking and was quoted $4,000 to get it fixed. Summary: had constant a/c issues and was finally quoted $4,000 to fix the a/c on a car that is only 4 years old.