There was a snap like sound under my hood while driving. Shortly after, the check engine light engaged and the vehicle lost all ability to accelerate. This happened while merging onto a fairly busy road, with rolling hills. If there were vehicles around there would have been potential for an accident. If this happened on the freeway in a middle lane, the vehicle would not have been able to…
2020 Honda Pilot engine problems
severe 45 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
45
Recalls
0
Avg fix
$3,100
3fires
What stands out
Owners have filed 45 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
The failure pattern owners describe
Buyer takeaway: The 2020 Pilot has widespread reports of catastrophic engine bearing failures at 35,000–96,000 miles that Honda refuses to recall on many VINs despite identical symptoms across models, plus chronic auto start/stop stalling in traffic that persists even after dealer repairs. Engine fires and sudden power loss have also been documented, making this model risky for families who depend on reliable, safe operation.
The 2020 Honda Pilot accumulates serious allegations of engine reliability, electrical restart control, and safety risks. The most common and severe complaint is connecting rod bearing failure—owners describe sudden loss of power, loud knocking or grinding, check engine lights (often flashing), and complete engine seizure requiring replacement. These failures occur between 35,000 and 96,000 miles with no advance warning. Dealership teardowns confirm rod bearings spun, seized, or physically failed. One owner reports the bearing shot through the block; another describes a piston rod blowing out the side of the engine. Replacement costs run $16,000, though at least one owner negotiated down with Honda good will.
The auto start/stop system is a close second for complaints. Owners report the engine shuts off at red lights or stop signs, then refuses to restart for 30 seconds to 3 minutes. The vehicle sometimes shifts itself into neutral without driver input. This leaves owners stranded in busy intersections—one was stuck for nearly two hours. Even after dealership repairs and software updates, the stalling recurs, sometimes more frequently.
Additional failures include sudden power loss or throttle unresponsiveness during highway merging and passing, a timing belt pulley seizure at 35,000 miles that damaged cylinder heads, two engine fires (one total loss), and low oil pressure warnings with loud clanking despite adequate oil in the pan. Owners report dealerships often cannot replicate problems or offer fixes unrelated to the actual failure.
Same Honda Pilot engine reports on nearby years: 2017 · 2018 · 2019 · 2021
Failure modes owners describe
Connecting Rod/Bearing Failure
Catastrophic bearing wear or mechanical failure causing total engine seizure, requiring replacement. Owners report connecting rod bearings overheating, seizing, or breaking, with one case describing a rod bearing that 'shot out of the block destroying the engine.' Another describes a piston rod blowing out the side of the motor.
When: 35,000–96,000 miles; 4–8 years of ownership
Symptoms owners cite: Check engine light illuminates (sometimes flashing); Loss of power or inability to accelerate; Loud knocking, grinding, or metal-on-metal sounds from engine; Vehicle shaking; Engine fails to run smoothly or stalls mid-drive; Engine completely seizes
Codes mentioned: P0300 (multiple cylinder misfire), P0302 (cylinder 2 misfire), Bearing/rod damage confirmed on teardown
Repairs/costs cited: Full engine replacement quoted at $16,000; one owner negotiated down to $4,917.75 out-of-pocket with manufacturer good will. Engine replacement required; defective engines held for inspection in at least one case.
Recalls/TSBs owners mention: Honda refuses to cover repair on vehicles not on recall list despite identical symptoms to recalled vehicles (2016–2021 Pilot fuel pump recall 23V-858 and rod bearing issues). One owner states extended warranty covered part or all of shortblock/engine replacement.
Auto Start/Stop System Malfunction (Stalling & Restart Failure)
Engine shuts off unexpectedly at traffic lights or stop signs when idle-stop feature is active, then fails to restart on demand or restarts only after multiple attempts and minutes of delay. Vehicle may shift into neutral without driver input. Affects safety in heavy traffic and at busy intersections.
When: No specific mileage pattern; occurs at 50,000+ miles; one owner reports recurrence two years after 'fix'
Symptoms owners cite: Engine stops at red light or stop sign; Engine will not restart when driver releases brake; Vehicle shifts into neutral without driver command; Dash lights illuminate with multiple warning messages; Radio becomes inoperable during event; remains off until vehicle is restarted after parking; Restart requires 30 seconds to 3 minutes and multiple button presses; Vehicles stranded in middle of intersections or traffic
Codes mentioned: Neutral shift message on display
Repairs/costs cited: One owner replaced transmission/park-neutral-drive mechanism for $1,100; replaced battery (less than 1 year old); dealership performed 'computer update' but issue recurred more frequently. Owners report problem persists after dealer service bulletins applied.
Recalls/TSBs owners mention: Honda has issued a service bulletin on the start/stop system (owner in narrative #4 references this). One owner notes there is an open NHTSA investigation into this issue. Dealerships claim 'nothing is wrong' or cannot replicate despite multiple incidents (at least 2–6 times per week in one case).
Power Loss/Hesitation During Acceleration
Engine loses response to throttle input during merging, passing, or highway driving, sometimes while cruise control is set. Vehicle may feel like transmission is slipping or lurching. Problem recurs unpredictably after temporary recovery.
When: Occurs at various mileages; one case at ~35,000 miles; multiple incidents over 7 months at 2+ hours of highway driving
Symptoms owners cite: Sudden loss of engine power or throttle response; Gas pedal becomes unresponsive or 'stops responding'; RPM fluctuations or surging; Transmission hesitation, lurching, or slipping sensation at 10–60 mph; Vehicle shakes during power loss or hesitation; Inability to accelerate to pass on interstate; Power returns suddenly, sometimes launching vehicle as if floored
Codes mentioned: Check engine light (no specific codes reported in most cases), P219B (O2 Sensor Signal Biased/Stuck Lean – Bank 2 Sensor 1), P0430 (catalyst system efficiency below threshold)
Repairs/costs cited: Owners cite fuel injector service ($500 for cleanup; problem recurred 3 months later), fuel pump module diagnostics. Mechanics unable to determine root cause without codes. One owner references diagnostic injector kit and GDI intake throttle body fuel injector service estimate of $3,345.06.
Recalls/TSBs owners mention: Recall 23V-858 (Fuel Pump Motor Safety) issued for 2016–2021 Pilots, but some owners' VINs do not qualify despite identical symptoms. Honda website lists risk of 'engine may not start or stall while driving.' Dealerships suggest unrelated repairs (fuel injector service) outside recall scope.
Engine Fires
Vehicle catches fire, with flames visible in front grill area or under hood. Two separate incidents reported; one total loss parked in hospital garage with sprinkler system activation; another while vehicle was being driven at highway speed.
When: 42,000 miles and 100,000 miles
Symptoms owners cite: Smoke visible entering cabin or coming from under hood; Flames visible in front grill area; Engine smoking; No warning signs prior to fire in one case
Repairs/costs cited: One vehicle was total loss per insurance appraiser. Fire extinguished by fire department and parking structure sprinkler system in first case. Police and fire reports filed.
Recalls/TSBs owners mention: Cause of failure not determined in at least one case. Manufacturer and dealer not yet notified at time of complaint in one incident. No recall or warranty action mentioned.
Timing Belt/Idler Pulley Failure
Timing belt idler pulleys seized, causing engine to lose timing and stall without warning. Resulted in damage to cylinder heads, valves, and associated internal components.
When: 4 years old, 35,000 miles
Symptoms owners cite: Sudden, unexpected engine stall on highway (65 mph); No dashboard warning lights or system messages prior to stall; No signs of trouble while driving
Repairs/costs cited: All damage (cylinder heads, valves, related components) repaired under warranty by Honda dealer.
Recalls/TSBs owners mention: Repaired under warranty; however, Honda did not justify or explain why components failed at such low mileage (35k on a 4-year-old vehicle). No reimbursement for towing, hotel, rental car, or other incidental expenses related to stranding.
Spark Plug / Cylinder Compression Loss
One or more cylinders lose ability to hold compression, or spark plugs fail, resulting in misfire, rough running, knocking, and power loss. One case involved cylinder 2 rod bearing damage in addition.
When: 53,000 miles; another unspecified mileage
Symptoms owners cite: Engine light flashing; Vehicle runs rough; Loud knocking sound when accelerating; Engine sputtering; No diagnostic codes shown in one case; Cylinder fails to hold compression (cylinder 3, #2)
Codes mentioned: P0302 (cylinder 2 misfire), P0300 (multiple cylinder misfire)
Repairs/costs cited: Full engine replacement required. One owner describes need for engine specialist inspection; another dealership found camshaft and cylinder #2 rod bearing damaged beyond repair.
Recalls/TSBs owners mention: Honda refusing to cover repair cost on vehicle not on recall list, despite matching 'major issue found on many Honda's and Acura's' related to crankshaft manufacturing defect.
Low Oil Pressure / Oil Pump Failure
Oil pump fails or oil pressure drops catastrophically, triggering low oil warning despite adequate oil in pan. Accompanied by loud clanking/grinding sounds typical of bearing wear under oil starvation.
When: At highway speed after normal operation
Symptoms owners cite: Low oil pressure warning light and 'Low Oil' message on dash; Loud clanking sounds from engine; Oil light flashing; Oil everywhere under vehicle after pull-over; Engine seizes or loses power
Codes mentioned: Low oil pressure (instrument cluster warning)
Repairs/costs cited: Engine replacement quoted at $16,000; owner negotiated $4,917.75 out-of-pocket after good will consideration. One owner's dealership suspected oil pump failure.
Recalls/TSBs owners mention: No specific manufacturer response or recall mentioned for oil pump failure.
Catalyst System Inefficiency / Emissions Fault
Catalytic converter requires replacement at relatively low mileage; emissions warning light illuminates. Diagnostic codes P0430 (catalyst efficiency) recorded.
When: 91,000 miles
Symptoms owners cite: Emissions warning light illuminates
Codes mentioned: P0430 (catalyst system efficiency below threshold)
Repairs/costs cited: Catalytic converter replacement required; repair not completed. Cost not specified.
Recalls/TSBs owners mention: Honda informed owner vehicle not covered under warranty despite low total ownership miles and emissions fault. No recall issued.
Synthesized from 45 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
Honda Pilot AWD EX-L 2020 Engine Failure Incident Report October 5, 2024 Check Engine light went on 294 IL Tollway while traveling in left lane. Began to feel a slowing of the vehicle and just a wrong feeling, proceeded to move towards right lane in busy traffic and ~0.5 to 0.75 miles later check engine light started flashing as we proceeded to exit. Planned to make it to rest area or tollbooth…
Engine developed a knocking, then started to sputter and ultimately stalled. No codes showed. Sent to dealership, they said I need a new engine, but could not tell me why. Again No codes drove car for 1 day, engine completely failed.
The engine completely shut down in the middle of the road after driving with auto Idle ON after stopping due to traffic. The car's engine would not restart. I had to shut down the car completely to have engine on again. (push the start/stop button to shut it down, and then to start it again). This was during a busy traffic and resulted in cars cutting in to my lane when I had to wait for the…
Had engine trouble with your 2020 Honda Pilot?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2020 Honda Pilot?
It's a meaningful issue. 45 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 45 complaints filed, engine issues most often appear around 77,667 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2020/Honda/Pilot.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.