2018 Honda Accord problems

Filed Nov 4, 2026 · Engine · 104,000 miles · CA

The contact owns a 2018 Honda Accord. The contact stated that while driving at 40 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The RPM was elevated above 2,000 RPM, but the engine shuddered, and the vehicle lost motive power. The dealer was contacted and made aware of the failure. The vehicle was taken to the dealer, where it was diagnosed with a blown head gasket. The contact was informed that there was a misfire in cylinders #2 and #3. The contact was informed that there was coolant mixed into the engine oil. In addition, the contact was informed that the head gasket and the engine needed further diagnostic tests. The contact stated that the failure was a known failure with the vehicle. The manufacturer was contacted and made aware of the failure. The failure mileage was approximately 104,000.

Filed Nov 1, 2026 · Engine · CA

The check engine light came on. I took it to the dealership where I bought it. They instructed me to go to an authorized Honda repair facility. I took it in July 17, 2025 for a check engine light. The auto repair dealership said the head gasket was no good. So they repaired it my extended warranty paid for the cost. Then the repair facility did an unauthorized second disassembly without my permission So they repaired it my extended warranty paid for the cost. Then the repair facility did an unauthorized second disassembly without my permission then I was expected to pay for the engine repair. There was coolant leaking into the engine which caused the engine block to be warped. Pistons rings cylinder was completely messed up.

Filed Oct 29, 2026 · Electrical · 283,000 miles · PA

Odometer Fraud. The contact purchased a 2018 Honda Accord. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of the purchase, the mileage was 110,000. It was later discovered upon checking a Carfax report, the mileage was 283,000.

Filed Oct 26, 2026 · Driver assistance · GA

Computer BCM module malfunction while driving. All warning light went off like Christmas tree.

Filed Oct 25, 2026 · Brakes, Driver assistance · NJ

I am submitting a serious safety complaint regarding the placement and design of the electronic parking brake switch in my Honda Accord. The parking brake switch is located on the center console, directly in an area where a driver's hand naturally rests while driving. This creates an unnecessary risk of accidentally activating the parking brake. With a traditional gear selector, shifting into reverse requires two deliberate actions: pressing a release button and physically moving the shifter. These safeguards help prevent accidental operation. However, in the Honda Accord, the parking brake switch can be activated with a simple finger movement. A driver resting their hand on the center console could unintentionally operate this switch. Even if the vehicle has electronic safeguards, accidental activation while driving could cause unexpected braking, startle the driver, or create a dangerous situation. What makes this particularly concerning is that Honda uses a different placement in the Honda Odyssey, positioning the parking brake switch away from where a driver's hand naturally rests. This demonstrates that a safer, less exposed location is possible. The parking brake is not a control that drivers need to access continuously while driving. There is no justification for positioning it where a driver's hand naturally rests. This risk is especially concerning during highway driving, when an unexpected braking event or even a momentary distraction could have serious consequences. A safety-critical control should require deliberate activation and should not be susceptible to incidental contact. I strongly urge Honda and federal safety regulators to investigate this design, evaluate the risk of accidental activation, and consider relocating the switch or implementing additional safeguards. This is an unnecessary and preventable safety hazard that should be addressed before someone is injured.

Filed Oct 22, 2026 · Transmission · VA

The CVT automatic transmission is leaking fluid from the transmission input shaft seal. The leak was diagnosed by Pohanka Honda of Fredericksburg, Virginia in October 2026 at approximately 99,400 miles. The dealer recommended replacing the transmission input shaft seal, a repair that requires removing the transmission, estimated at $2,990.90 plus tax. American Honda reviewed the case (Case #[XXX]) and declined goodwill assistance on [XXX]. The repair has not yet been performed. Safety concern: continued loss of transmission fluid can cause transmission failure and a loss of motive power while driving. No crash, fire, or injuries occurred. The problem is ongoing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 22, 2026 · Engine · MA

Noticed that the engine temperature was slightly higher normal (went to 5 bars when always at 4) I checked and the fan was running properly and had coolant in the overflow tank. I took it to the Honda dealer, and they found that the head gasket failed and the fluid inside the radiator leaked into the cylinders. My 2018 Honda has the 2.0T engine with 126,875 miles. Honda acknowledges this design flaw on their 1.5T and 2.0 non-turbo engines but wouldn't cover my 2.0T. This 2.0T from my research is about 80-100 units of the 1,115,384 accords sold in the US 2018-2022 10th gen. The 2.0T has the same design flaw as the other two engines but Honda wont cover them. Moreover, I asked for 50% good will coverage from Honda and was flat out told no after waiting for 4 weeks to get this decision on a known mechanical engine flaw that could be a safety issue, Eg. fire or loss of power on a highway that can get someone hurt or killed.

Filed Oct 21, 2026 · Driver assistance, Fuel system · NY

SUPPLEMENTAL DATA FOR ACTIVE ODI CASE #XXX. P1: SYSTEMIC SAFETY RECALL FALSIFICATION (the federal safety agency 23V‑858) This submission supplements active ODI Case #XXX against Honda of Manhasset (Facility #XXX). On XXX, the facility certified Fuel Pump Safety Recall 23V‑858 as fully completed to claim warranty credits. Vehicle dashcam recordings irrefutably prove the technician never opened the hood, never disconnected the 12V battery (mandatory safety step to release fuel pressure), and never stood in front of the car. When confronted on XXX with video evidence, advisor [XXX] manually altered the invoice to "Not Performed", falsely blaming a system error/lack of stock, despite parts records proving the recall kit arrived XXX. System admin then issued a corrective invoice "Reprint #1" stating "RECALL NOT PERFORM. PART NOT IN STOCK", dynamic-reopening the VIN nationally to evade corporate detection. This constitutes severe corporate fraud. P2: COMPRESSED ADAS SOFTWARE TOLERANCES AND PROCEDURAL OMISSION The secondary fraud involves an unneeded quote of $1,237.19 and illegal $233.55 diagnostic fee under false pretense of a "bent radar bracket". Independent engineering audit disproved hardware failure, establishing true 0.00° baseline. Technical root cause of DTC P2583-76 was the recall update, migrating the car from the factory 2018 software layout—which possessed a permissive vertical threshold up to ±3.0°—directly to hyper-strict Program ID: 36802-TVA-A190, restricting the window to an unyielding 0.0°±0.1°. Due to suspension settling over 259,258 km, the radar had a natural deviation of -2.25°, which A190 flagged, disabling ACC. On XXX, the Shop Foreman confessed technicians willfully skip physical radar re-centering protocols because they "take too much time". After manual adjustment back to 0.00°, a 19km road test dynamically cleared DTC [XXX] per Honda Bulletin 21-068. Subpoena dealer records for ID A190. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 18, 2026 · Engine, Transmission · MD

My 2018 Honda Accord EX-L with the 2.0L turbocharged engine (K20C4) and 10-speed automatic has had a cylinder head gasket failure at approximately 111,000 miles. The vehicle has been maintained consistently. Starting in early October 2026, the vehicle began shaking violently under acceleration while the engine was cold, including when accelerating at highway speed and climbing hills. The shaking lasted for roughly the first 15 minutes of every drive. No check engine light or diagnostic trouble codes appeared. In mid-October 2026, a Honda dealership diagnosed coolant leaking past the cylinder head gasket into the combustion chamber and quoted approximately $5,000 for the repair. Replacement parts are on backorder with no estimated arrival date. Violent shaking during highway acceleration is a safety concern, and continued coolant leakage into the cylinders can cause further engine damage. In August 2026, American Honda extended head gasket warranty coverage to 10 years or 150,000 miles on 2018–2022 Accord 1.5T and hybrid models for the same condition: coolant entering the combustion chamber and causing misfires. The 2.0L turbo engine was excluded. A pending class action (Alcantara et al. v. American Honda, consolidated with Bissell v. American Honda, S.D. Cal.) alleges head gasket failure in Honda's 1.5L and 2.0L turbocharged engines. I ask that the federal safety agency investigate head gasket failures in 2018–2022 Accords with the 2.0L turbo engine, and whether this engine should be included in Honda's remedy.

Filed Oct 14, 2026 · Driver assistance · TX

This has happened several times, usually on interstates, about once every few months. It usually takes place where there is a transition in the road, especially if there is a large shadow combined with a car in front of me. The two places that come to mind include merging on, especially during sunrise or sunset (if the highway is set into the ground like in [XXX]), or when passing under a bridge on the highway, esp with a car in front of me that is slowing down. The latter happened earlier this week, I believe on XXX eastbound in [XXX], passing under the XXX or one of the other streets similar to it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)