Upon start of I heard a rattle and it stopped after a couple seconds. I got online and see it seems to be a common problem for my Honda the vtc actuator goes out frequently.
2012 Honda Accord engine problems
moderate 26 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
26
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 26 engine complaints filed for the 2012 Honda Accord, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 26 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.
No new NHTSA engine complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: A 2012 Accord engine carries real reliability risk: VTC actuator failures with cold-start grinding are endemic and often out-of-warranty, piston ring problems cause misfire and loss of power, and throttle response glitches create safety concerns. Check for grinding on cold start, oil consumption patterns, and service records before buying.
The 2012 Accord's engine has emerged as a problem area across multiple failure modes. Most prevalent is the Variable Timing Control (VTC) actuator, which produces loud rattling or grinding noise at cold startup—typically lasting two seconds but worsening to occur every cold start as months pass. Owners report Honda engineers TSB 09-010 recognizing this issue years ago, yet the company has selectively repaired some VINs while leaving others out of pocket around $700 per repair, all after warranty expires around 60,000–63,000 miles.
Piston ring failures surface in the mid-to-high mileage range, causing cylinder misfires (particularly cylinders 1 and 3), check engine lights, and loss of power dangerous for highway merging. One owner's engine seized at 68,000 miles requiring major overhaul; another faced driveshaft separation at 193,000 miles after ring failure cascaded to oil pan damage.
Unintended engine revving occurs sporadically—the throttle physically moves away from drivers' feet on downhill roads or during slow turns, with RPMs jumping 1,000+ points without pedal input. Owners also report drive-by-wire throttle hesitation when reapplying gas during turns, which creates genuine safety risk in traffic. Excessive oil consumption compounds the picture: one owner burned 10 percent of a full oil pan in four days of minimal driving.
Same Honda Accord engine reports on nearby years: 2009 · 2010 · 2011 · 2013 · 2014
Failure modes owners describe
VTC Actuator Rattling/Grinding at Cold Start
Variable timing control actuator produces loud rattling or grinding noise at cold startup, particularly on first start of the day or after vehicle sits for several hours. Noise typically lasts 2 seconds. Owners report the issue worsens over time and can progress from morning-only occurrence to every cold start. One owner noted that if the actuator fails completely, the car will stop wherever it is.
When: Cold startup; first start of day; after vehicle sits for hours. Reported from 63,000 miles onward; one case at 95,000 miles.
Symptoms owners cite: Loud rattling noise at cold start; Grinding noise at startup; Noise lasts approximately 2 seconds; Noise recurs with increased frequency over time; May progress to occur every cold start and after idle periods
Repairs/costs cited: Dealer/mechanic replacement of VTC actuator, solenoid, or VTC controller reported at $700. One owner had VTC controller replaced at 63,000 miles; another reported solenoid and VTC solenoid replacement that did not resolve recurring failure.
Recalls/TSBs owners mention: Honda TSB 09-010 documents this issue. Honda has conducted selective repairs on some VINs but not others; many owners report their VINs are not on recall/fix list. Some dealers stated Honda has the issue under investigation but refused warranty coverage out-of-warranty. No recall issued despite widespread complaints.
VTC Actuator Oil Leakage
VTC actuator failure accompanied by excessive oil consumption and oil leakage. One owner reported the faulty actuator has been draining oil for 2 years; another noted oil leaking during cold-start grinding condition.
When: Concurrent with cold-start grinding; one case noted 2 years of oil loss.
Symptoms owners cite: Excessive oil consumption; Oil leakage from engine; Check oil warning light illumination
Repairs/costs cited: VTC actuator replacement mentioned as remedy; costs reported around $700.
Recalls/TSBs owners mention: No recall. Previous lawsuit regarding excessive oil loss but not addressing root cause of VTC actuator failure.
Sudden Unintended Engine Revving
Engine suddenly revs without driver input, typically when downhill, turning slowly, or coasting. RPM jumps from below 2,000 to 3,000 RPM or higher. Gas pedal physically moves away from driver's foot during event. Occurs intermittently and resolves on its own within seconds. One owner attributes this to drive-by-wire technology.
When: Downhill driving; slow-speed turns from traffic lights/stop signs; initial break-in period (first 500 miles in one case). Events early in vehicle life (low mileage reported).
Symptoms owners cite: Sudden engine RPM increase without driver pedal input; Louder engine noise during event; Gas pedal felt moving away from foot; Brief hesitation or non-response when accelerator reapplied after lifting off; Minor gas pedal vibration during break-in (first 500 miles)
Engine Loss of Power/Stalling While Driving
Complete or near-complete loss of engine power while driving at highway speeds (55–65 MPH) or during critical maneuvers like merging. Vehicle becomes undriveable and must be towed. One case involved driveshaft separation during slow stop; another involved cylinder misfire at highway speed.
When: Various mileages: 68,000 miles (major overhaul needed), 112,000 miles (cylinder misfire), 193,000 miles (driveshaft failure).
Symptoms owners cite: Sudden loss of motive power; Check engine warning light illumination; Abnormal sounds from engine/drivetrain; Loud popping sound from engine compartment; Vehicle shaking abnormally; Engine stalled in roadway; Driveshaft separated and fell on road
Codes mentioned: Cylinder 3 misfire detected, Check engine light
Repairs/costs cited: Engine major overhaul required in one case (68,000 miles); driveshaft failure repair and oil pan damage repair reported (193,000 miles); cylinder repair ongoing in another case.
Recalls/TSBs owners mention: Manufacturer notified in one case; informed owner VIN was not included in related recall.
Engine Misfire (Piston Ring Failure)
Engine misfires in single cylinder (most commonly #1 and #3 cylinders reported). Check engine light illuminates. One owner reported oil fouling on spark plugs in cylinders 1, 3, and 5 caused by piston ring failure. Repairs include piston ring replacement but failure can recur.
When: 120,640 miles; 147,000 miles; one case involved oil fouling diagnosed at unknown mileage but required major cylinder disassembly.
Symptoms owners cite: Engine misfire in specific cylinder; Check engine warning light; Traction control warning light; Loss of power during merging; Oil fouling on spark plugs; Vehicle shaking; Vehicle unable to be safely driven
Codes mentioned: Cylinder 1 misfire, Cylinder 3 misfire, Cylinders 1, 3, 5 ring failure with oil fouling
Repairs/costs cited: Piston ring replacement in cylinders 1, 3, 5 reported; one owner's repair not covered by extended warranty; another repair attempted but failure recurred.
Recalls/TSBs owners mention: Manufacturer informed in one case; declined to include vehicle in recall. Federal court authorized notice regarding engine misfire problem in at least one case, but dealer stated nothing could be done until failure occurred.
Excessive Oil Consumption
Engine consumes abnormally high volumes of oil in short time periods. One owner reported 10% oil depletion in 4 days with only 6 miles/day driving.
When: Reported between oil changes; one case after 4 days of minimal driving.
Symptoms owners cite: Rapid oil level drop; Check oil warning light
Engine Knock/Abnormal Rattling Noise During Operation
Abnormal rattling, grinding, or knocking sounds from engine during driving or idling. Noise may be loud and progressive, worsening during driving and idle conditions.
When: Various mileages; one case noted engine noise detected after 95,000 miles.
Symptoms owners cite: Loud abnormal noise from engine compartment; Grinding or rattling during idling; Progressive louder noise during driving; Noise audible on startup and during operation
Repairs/costs cited: Warranty expired in reported cases; no repairs performed.
Recalls/TSBs owners mention: Warranty expired; dealer unable to repair.
Throttle Non-Response / Drive-by-Wire Hesitation
Engine fails to respond to accelerator pedal input when driver reapplies pressure after lifting off gas during turns or slow-speed maneuvers. Creates momentary hesitation that can create safety hazards during turns when oncoming traffic is approaching.
When: Intermittent, recurring; primarily during slow-speed turns from traffic lights or stop signs.
Symptoms owners cite: Engine does not respond to accelerator depression; Brief hesitation or delay in acceleration; Occurs only during turns, not straight driving; Non-response when lifting off and reapplying gas pedal; Unnerving and potentially dangerous during traffic
Engine Revving While Braking
Engine revs and RPMs increase when driver is pressing brake pedal to slow vehicle, as if accelerator is being applied. Requires extra brake pressure to maintain control.
When: Intermittent; reported occurrence at low speed (25 MPH zone) during city driving.
Symptoms owners cite: Engine revving while braking; Engine seizing momentarily then resuming normal operation; Increased RPM without accelerator input; Requires higher brake pedal pressure than normal
Repairs/costs cited: Dealer unable to duplicate or locate failure.
Synthesized from 26 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
I am experiencing the issue outlined in Honda tsb 09-010, at cold start-up, the engine rattles loudly for about 2 seconds. Notice issue after driving vehicle 95,000 miles. Was not able to have dealership check the issue because it only happens when vehicle has been sitting idle in the cold for a long period of time. Plus vehicle is garage kept. Now that extended warrenty has expired, wondering…
Tl* the contact owns a 2012 Honda accord. The contact heard an abnormal noise coming from the engine. The contact called burns Honda (325 nj-73, marlton, nj 08053, 1-888-667-2937) and was informed that the warranty was expired and the vehicle was unable to be repaired. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was…
Vtc acuator is faulty. For 2 years now I've had a grinding noise when I start the car and no car shop has been able to tell me what is wrong up until yesterday I found out it's the vtc actuator that's making the grinding sound and it's been draining my oil. I call america Honda to see if it has a recall for this faulty part and all I am told is that if I have had the car for less than 3 years or…
Had engine trouble with your 2012 Honda Accord?
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 2012 Honda Accord?
It's a documented issue but not catastrophic. 26 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 18 complaints that reported odometer mileage, most engine failures cluster between 43,000 and 120,000 miles, with the median around 75,000. A quarter of owners report trouble before 43,000; a quarter make it past 120,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
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/2012/Honda/Accord.
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.