Engine. Review the 161 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Power Train. Review the 111 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

10 crash reports5 fire reports5 injury reports

What owners actually said

373 reports

Mileage unknown · Jun 24, 2026

Lane DepartureService BrakesSteering

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I started the vehicle and steering wheel was frozen and EPS, Brake, and lane departure lights on the dash. I shut the car off and let it sit for five minutes. Restarted and the steering wheel came back to normal. but all light remained on. I drove the car about half a mile and the lights went off. When I got home, I shut the car off and started it again. The wheel was frozen again, and all the lights came back on. I shut the car off and re-started and steering came back on. I'm afraid this will happen again but while I'm driving. I looked up the issue but no recall but a lot of complaints with same problem. I cannot drive like this for it can be dangerous if I'm driving and lose control of the vehicle and hurt someone or myself. I took the car to a mechanic, but he said there is no current issues just stored codes. Today I had the same problem.

NHTSA ODI #11746141

Mileage unknown · Jun 24, 2026

EnginePower Train

Our 2016 Acura MDX SH-AWD has the exact same engine problem/damage caused by the Connecting Rod Bearing recall. Our vehicle displayed the exact symptoms described by countless other MDX owners including owners who have vehicles both on & not included on the current recall list.

NHTSA ODI #11746102

Mileage unknown · Jun 18, 2026

Engine

This make and model has the same problems with the engine rod bearings it’s the v6 3.5L

NHTSA ODI #11745072

Mileage unknown · May 28, 2026

Engine

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FOUND #4 CYLINDER MISFIRE - METAL CONTAMINATION SPUN A BEARING INTERNALLY INSIDE THE ENGINE. RECOMMEND REPLACING THE ENGINE. SEE QUOTES BELOW: RECOMMEND AT THE SAME TIME AS THE ENGINE REPLACEMENT - STARTER, TIMING BELT, SPARK PLUGS, AND VALVE. Found #4 cylinder misfire – metal contamination – spun a bearing internally inside the engine. Recommend replacing the engine.” After researching this issue, I became concerned that this failure appears very similar to the widely reported connecting rod bearing failures associated with Acura/Honda 3.5L V6 engines and Recall 23V-751. The symptoms in my vehicle closely match the issues described in the recall and related investigations, including: connecting rod bearing failure, spun bearing, internal engine damage, metal contamination, cylinder misfire, and complete engine failure. Additionally, I understand that the National Highway Traffic Safety Administration (NHTSA) has expanded investigations into similar engine failures affecting Acura and Honda vehicles outside the original recall VIN population.

NHTSA ODI #11740745

150,000 miles · May 15, 2026

Engine

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The contact owns a 2016 Acura MDX. The contact stated while driving at an undisclosed speed, the transmission independently shifted into neutral. The vehicle was driven to the shoulder of the road. The contact stated that several unknown warning lights were illuminated. The contact stated that the event was scary. The contact stated that the vehicle was so hot inside. The contact crawled to the passenger's seat and exited the vehicle. The vehicle was towed to an independent mechanic where it was diagnosed with a failed engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was towed to the dealer, however the vehicle was not inspected. The contact was informed that the repair was not covered under any unknown recall. The manufacturer was made aware of the failure. The contact was informed that the repair was covered under an unknown recall which had a similar failure description. The contact was advised to take the vehicle to the dealer. The failure mileage was approximately 150,000.

NHTSA ODI #11738155

Mileage unknown · May 12, 2026

EnginePower Train

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When driving at highway speeds there randomly is a full loss of engine power for 3 to 5 seconds. Each time this has occurred I was on the highway and depressing the gas pedal further to either pass another car or because I'm driving up and incline. For several seconds the car looses all power and begins slowing. Traffic approaching rom behind may have to apply brakes. I am unsure whether it's the transmission disconnecting from the engine, or the engine dropping to idle speed, I have tried pressing the gas pedal further and also tried the paddle shifters to force a downshift, and neither has any effect. I have been to the dealer multiple times and they can't re-create the issue so they dismiss it.

NHTSA ODI #11737458

129,000 miles · May 5, 2026

Engine And Engine Cooling

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The contact owns a 2016 Acura MDX. The contact stated that while her daughter was driving 55 MPH, she could a loud notice and the vehicle shaking and vibrating independently. Several warning lights illuminated. A dealer was contacted. The vehicle was towed to an independent mechanic and dealer where it was diagnosed that the connecting rod bear needed to be replaced. The VIN was not included in NHTSA Campaign Number: 23V751000 (ENGINE AND ENGINE COOLING). The manufacturer was notified of the failure and they denied the request for recall and they are reconsidering and reviewing. The failure mileage was 129,000.

NHTSA ODI #11735859

148,000 miles · May 4, 2026

Engine

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The contact owns a 2016 Acura MDX. The contact stated that upon start of the vehicle, the engine entered limp mode as a check engine light appeared on the instrument panel. The vehicle failed to accelerate above 35 MPH as the contact was forced to restart the vehicle. The vehicle resumed normal driving after restart and the contact called the dealer for an appointment. While driving the vehicle to the dealer, the failure returned as an abnormal, banging sound began to emit from the vehicle. Due to the failure, the vehicle was towed to the dealer where the vehicle was diagnosed with rod bearing connector failure which resulted in engine failure. Upon investigation, the contact discovered NHTSA Action Number:PE25008(Engine) which the contact linked to the failure. The manufacturer was also notified of the failure where he was informed that the vehicle was not included in the recall and was offered the chance to apply for a goodwill financial assistance for the repair of the engine. The vehicle was not repaired and remained in the dealer's possession. The failure mileage was approximately 148,000.

NHTSA ODI #11735571

Mileage unknown · Apr 27, 2026

Engine

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My 2016 Acura MDX (purchased new January 2016) has a confirmed failure of the 9-speed automatic transmission warmer (ATF warmer), causing engine coolant and ATF fluid to cross-contaminate. The failed warmer is still in the vehicle and available for inspection. In the last week of March 2026, I noticed the engine cooling fan continuing to run after shutting off the vehicle — an abnormal symptom that prompted me to bring the car in for service. No check engine or transmission warning lights were illuminated. On March 28, 2026, Blue Sky Tire and Auto (Cumming, GA) performed a diagnostic inspection confirming coolant and ATF cross-contamination. The technician also physically inspected the transmission warmer manufacturing date stamp, confirming it falls within the defective manufacturing date range identified in Acura Service Bulletin 17-009 (October 6, 2017), which states that improperly manufactured warmers allow coolant and ATF to mix, potentially causing permanent engine and transmission damage. The vehicle has not been inspected by an Acura dealership for this failure. However, an American Honda Customer Relations case has been opened (Case # XXX) with a case manager assigned to evaluate the warranty claim under the 10-year/unlimited mileage warranty extension issued by American Honda for this exact defect. This failure poses serious safety risks — loss of transmission lubrication can cause sudden transmission failure at speed, and coolant-ATF mixing can cause engine overheating, both potentially resulting in loss of vehicle control. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11734011

Mileage unknown · Apr 19, 2026

Engine

I was driving down the interstate, the engine started making noise, a saw big puff of Blue smoke in the vehicle. Lost all power

NHTSA ODI #11732226

Official recalls

26V365000 · Structure:frame And Members; Suspension:rear

Jun 4, 2026

American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.

Consequence & remedy

Consequence: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

Remedy: Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov beginning June 10, 2026.

Additional source detail variants (2)

Suspension:rear

Consequence: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

Remedy: Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov beginning June 10, 2026.

Structure:frame And Members

Consequence: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

25V259000 · Exterior Lighting; Interior Lighting

Apr 17, 2025

Honda (American Honda Motor Co.) is recalling certain 2014-2020 Acura MDX vehicles. Moisture may enter the tailgate lid light assembly and wiring harness, which can cause the interior and exterior lights to fail, including the lid lights, position lights, license plate lights and taillights.

Consequence & remedy

Consequence: Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.

Remedy: Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1-800-382-2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under NHTSA recall number 19V-256 will need to have the new remedy completed.

Additional source detail variants (2)

Interior Lighting

Consequence: Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.

Remedy: Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1-800-382-2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under NHTSA recall number 19V-256 will need to have the new remedy completed.

Exterior Lighting

Consequence: Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.

23V858000 · Fuel System, Gasoline:delivery:fuel Pump

Dec 18, 2023

Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.

Consequence & remedy

Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.

23V751000 · Engine And Engine Cooling:engine:hard Parts Internal/mechanical

Nov 13, 2023

Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturing error, the connecting rod bearing in the engine may wear and seize, damaging the engine.

Consequence & remedy

Consequence: A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or injury.

Remedy: Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters were mailed March 28, 2024. 2016-2017 Acura MDX owner letters were mailed November 1, 2024. 2016-2020 Acura MDX owner letters are expected to be mailed in mid-December 2024. Honda began mailing owner notification letters as of March 18, 2024. 2015-2016 Acura owner letters are expected to be mailed mid-December 2024, 2018 Acura TLX owner letters are expected to be mailed the end of March/early April 2024, 2019 Acura TLX owner letters are expected to be mailed mid-May 2024, 2020 Acura TLX owner letters are expected to be mailed mid-June 2024, and 2016-2020 Acura MDX owner letters are expected to be mailed January 27, 2025. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XG1 and GG0.

19V256000 · Exterior Lighting; Exterior Lighting:tail Lights

Mar 28, 2019

Honda (American Honda Motor Co.) is recalling certain 2014-2019 Acura MDX and 2017-2019 Acura MDX Sport Hybrid vehicles. Moisture may enter the tailgate lid lights, possibly causing a loss of the tailgate lid lights and the taillights.

Consequence & remedy

Consequence: Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.

Remedy: Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1-888-234-2138. Acura's number for this recall is M49.

Additional source detail variants (2)

Exterior Lighting

Consequence: Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.

Remedy: Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1-888-234-2138. Acura's number for this recall is M49.

Exterior Lighting:tail Lights

Consequence: Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.

19V060000 · Fuel System, Other:delivery:fuel Pump

Jan 29, 2019

Honda (American Honda Motor Co.) is recalling certain 2016-2018 Acura MDX, 2015-2019 Acura TLX and 2015-2017 Honda Accord vehicles, equipped with a 3.5L V6 engine. Particulates in fuel may adhere to the internal components of the fuel pump, reducing its performance.

Consequence & remedy

Consequence: Reduced fuel pump performance can result in an engine stall, increasing the risk of crash.

Remedy: Honda will notify owners, and dealers will update the fuel injection engine control unit (FI-ECU) software and, if necessary, replace the fuel pump, free of charge. The recall began March 25, 2019. Owners may contact customer service at 1-888-234-2138. Acura's recall number for this recall is P3W. Honda's recall number for this recall is N3X.

16V417000 · Fuel System, Gasoline:storage:tank Assembly

Jun 9, 2016

Honda (American Honda Motor Co.) is recalling certain model year 2015 Acura MDX 2WD and MDX 4WD vehicles, 2016 Acura MDX 4WD vehicles, 2015-2016 Honda Odyssey vehicles, and 2016 Honda Pilot 2WD and 4WD vehicles. The affected vehicles have fuel tanks that were manufactured with insufficient welds which may separate and allow fuel to leak out.

Consequence & remedy

Consequence: A fuel leak in the presence of an ignition source may result in a fire.

Remedy: Honda will notify owners, and dealers will replace the fuel tanks, free of charge. Owners may contact Honda/Acura customer service at 1-888-234-2138. The recall began on July 29, 2016. Honda's numbers for this recall are KA9 (Honda vehicles) and KB0 (Acura vehicles).

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

PE25008 · Engine Failure

Opened Aug 20, 2025 · No close date supplied

Status: open (inferred from source dates) · Engine

The Office of Defects Investigation (ODI) has received 414 reports of connecting rod bearing failures in the 3.5L V6 engine used in the following vehicles: Model Years (MY) 2018-2020 Acura TLX, MY2016-2020 Acura MDX, MY2016-2020 Honda Pilot, MY2018-2020 Honda Odyssey, and MY2017-2019 Honda Ridgeline. The subject engine failures were analyzed as part of a Recall Query (RQ24013). It was determined that these engine failures are outside the scope of Honda Recall 23V-751. Further, evidence gathered in conjunction with RQ24013 does not suggest this failure is caused by the same crankshaft manufacturing defect that is addressed by Honda in Recall 23V-751. Based on analysis of data from RQ24013, NHTSA has closed that investigation. The significant number of reports of engine failure in vehicles outside the scope of RQ24013 presents a potential safety risk that warrants further investigation. ODI is opening this Preliminary Evaluation (PE) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

EA25004 · No Restart After Auto Start/stop Engages

Opened Mar 26, 2025 · No close date supplied

Status: open (inferred from source dates) · Engine And Engine Cooling:engine; Engine And Engine Cooling:engine:crank/camshaft Position Sensor; Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software; Engine And Engine Cooling:engine:hard Parts Internal/mechanical

On June 3, 2022, the Oﬃce of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several ﬁeld reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traﬃc light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Additional source detail variants (4)

Engine And Engine Cooling:engine:crank/camshaft Position Sensor

Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software

Engine And Engine Cooling:engine:hard Parts Internal/mechanical

Engine And Engine Cooling:engine

RQ24013 · Engine Failure

Opened Nov 8, 2024 · Closed Aug 20, 2025

Status: closed (inferred from source dates) · Engine

On November 8, 2024, the Office of Defects Investigation (ODI) opened Recall Query RQ24013 to assess the scope of Honda recall 23V-751 after receiving complaints that alleged connecting rod bearing failures in vehicles that were not within the scope of recall 23V-751. In November 2023, Honda recalled 248,999 various Model Year (MY)2016–2020 Honda and Acura vehicles equipped with the 3.5L V6 engine. Honda recalled these vehicles due to a crankshaft manufacturing defect that caused premature connecting rod bearing wear and engine seizure. While the out-of-scope failures involved in these complaints appear to have a very similar failure mechanism as the recalled engines, a thorough analysis of all available data from Honda has not indicated that the same manufacturing defect exists in the out-of-scope engines as the engines recalled by 23V-751. Based on this analysis ODI has determined that Honda has properly defined the scope of recall 23V-751. Consequently, ODI will close this RQ investigation. NHTSA will continue to investigate these complaints of engine failure as part of a new Preliminary Evaluation Investigation (PE25008). The Agency reserves the right to take additional action if warranted by new circumstances.