The 2010 Civic Si with the K20Z3 is a solid platform, but third-gear synchro failures and oil-burning from worn piston rings dominate the problem list—both driven hard by enthusiast owners who rev-happy these cars.
Third-Gear Synchro Failure (Transmission)
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Grinding or crunching into third gear, especially when shifting quickly, Gear pops out of third under load or deceleration, Notchy feel on 2-3 upshift
Fix: Requires full transmission rebuild with synchro hub, sleeve, and keys replaced. 8-12 labor hours for removal, disassembly, repair, and reinstall. Many owners opt for aftermarket brass synchros at this point.
Estimated cost: $1,800-3,200
Excessive Oil Consumption (Piston Ring Wear)
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Burning 1+ quart every 1,000 miles, Blue smoke on startup or hard acceleration, Fouled spark plugs (oil-coated), Low compression on cylinder leakdown test
Fix: Piston rings stuck or worn—requires full engine disassembly, honing, new rings, bearings, and gaskets. 18-25 labor hours for proper rebuild. Some choose short-block replacement instead if machine work needed.
Estimated cost: $3,500-5,500
Transmission Oil Cooler Line Leaks
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Transmission fluid dripping near radiator or front subframe, Low fluid level causing hard shifts or gear grind, Visible corrosion or weeping at cooler fittings
Fix: Replace cooler lines and fittings, sometimes full cooler assembly if core corroded. 2-3 labor hours including fluid refill and bleeding.
Estimated cost: $300-600
Transmission Mount Failure
Common · low severity
Typical onset: 70,000-120,000 mi
Symptoms: Clunking on aggressive shifts or throttle lift, Excessive drivetrain movement visible from engine bay, Vibration at idle when in gear
Fix: Replace rear transmission mount (often the culprit). 1.5-2.5 labor hours. Many upgrade to stiffer aftermarket mounts at this point.
Estimated cost: $200-400
Crankshaft Position Sensor Failure
Occasional · high severity
Symptoms: No-start or stalling while driving, Tachometer drops to zero and engine dies, P0335 or P0339 codes stored
Fix: Replace crank sensor behind timing cover—not terrible access but requires removing accessory belts and covers. 1.5-2 labor hours.
Estimated cost: $250-450
Clutch Master Cylinder Leaking
Occasional · medium severity
Typical onset: 100,000-150,000 mi
Symptoms: Soft or spongy clutch pedal, Pedal slowly sinks to floor when held down, Fluid leak visible at firewall or low reservoir level
Check transmission fluid condition and level every 15,000 miles—burnt smell or metal shavings means synchros are dying
Monitor oil consumption closely after 80k miles; frequent oil changes with quality synthetic can slow ring wear
Avoid aggressive 2-3 shifts when cold—third-gear synchros are the weak link in these boxes
Budget for a transmission refresh or engine reseal if buying over 100k miles—these are wear items on driven Si models
Buy one if the transmission shifts cleanly and oil consumption is under control—otherwise budget $4k-6k for drivetrain work within the first year.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 19V502000
2019-06-27 · EA15001
Honda (American Honda Motor Co.) is recalling certain 2009-2014 Acura TSX, 2011-2014 TSX Sport Wagon, 2010-2013 ZDX, 2008-2012 Honda Accord, 2010-2011 Accord Crosstour, 2006-2011 Civic and Civic Hybrid, 2008-2010 Civic GX NGV, 2012-2015 Crosstour, 2007-2011 CR-V, 2009-2013 Fit, 2014 Fit EV, 2010-2014 Insight, and 2009-2015 Pilot vehicles.
The vehicles are equipped with passenger frontal air bag inflators assembled as a recall remedy part or replacement service part, that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Honda will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began August 12, 2019. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are F5F and Q5E.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 19V378000
2019-05-16
Honda (American Honda Motor Co.) is recalling certain 2009-2014 Acura TSX, 2011-2013 TSX Sport Wagon, and 2010-2012 ZDX and 2008-2012 Honda Accord, 2010-2011 Accord Crosstour, 2006-2011 Civic, Civic Hybrid and Civic NGV, 2012-2014 Crosstour, 2007-2011 CR-V, 2009-2013 Fit, 2010-2013 Insight, and 2009-2015 Pilot vehicles. The front passenger air bag inflator may have been installed incorrectly during replacement.
Consequence: An incorrectly installed air bag inflator may not properly deploy the passenger frontal air bag in the event of a crash, increasing the risk of injury.
Remedy: Honda will notify owners, and dealers will inspect the inflator installation and, if necessary, replace the passenger frontal air bag module assembly, free of charge. The recall began July 5, 2019. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are M4O, P4R, T4Q, and W4P.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V661000
2018-09-27 · EA15001
Honda (American Honda Motor Co.) is recalling certain 2014 Honda Insight and Acura TSX and TSX Wagon, 2014-2015 Honda Crosstour and Pilot vehicles nationwide, as well as certain 2014 Honda FCX Clarity and Fit EV vehicles in Florida, Hawaii, Puerto Rico, Texas, Alabama, Georgia, Louisiana, Mississippi, South Carolina, California, American Samoa, Guam, the Northern Mariana Islands (Saipan) and the U.S. Virgin Islands.
Honda is also recalling certain 2011-2013 Acura TSX, TSX Wagon and ZDX, Honda Crosstour, Insight, Fit and Pilot vehicles, 2011-2012 Honda Accord and 2011 Honda Civic NGV, Civic, Civic Hybrid and CR-V vehicles in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia and West Virginia.
Lastly, Honda is recalling certain 2010-2013 Acura TSX and ZDX, Honda Crosstour, Fit, Insight and Pilot, 2011-2013 TSX Wagon, 2010-2012 Honda Accord and 2010-2011 Honda Civic NGV, Civic, Civic Hybrid and CR-V vehicles in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin and Wyoming.
These vehicles are equipped with certain air bag air bag inflators assembled as part of the frontal air bag modules, and used as original equipment or replacement equipment (such as after a vehicle crash necessitating replacement of the original air bags), may explode due to propellant degradation occurring after long-term exposure to higher absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Honda will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began November 6, 2018. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are M2J and S2K.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V268000
2018-04-26
Honda (American Honda Motor Co.) is recalling certain 2003-2012 Honda Accord and Pilot, 2010 Accord Crosstour, 2001-2011 Civic, 2002-2011 CR-V, 2003-2004, 2006-2008 and 2011 Element, 2007 and 2009-2013 Fit, 2010-2012 Insight, 2002-2004 Odyssey, and 2012 Ridgeline vehicles. The front passenger air bag may have been installed incorrectly during replacement.
Consequence: An incorrectly installed air bag may deploy improperly in the event of a crash, increasing the risk of injury.
Remedy: Honda will notify owners, and dealers will inspect and, if necessary, replace the passenger frontal air bag module assembly, free of charge. The recall began June 22, 2018. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are K1P, and M1O.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V042000
2018-01-09 · EA15001
Honda (American Honda Motor Co.) is recalling certain 2010-2013 Acura TSX, ZDX, Honda Accord Crosstour, Fit, Insight and Pilot vehicles, 2011-13 Acura TSX Sportswagon, 2010-2012 Honda Accord,, 2010-2011 Honda Civic, Civic NGV, Civic Hybrid and CR-V vehicles and 2013 Honda FCX Clarity and Fit EV vehicles ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
Additionally, Honda is recalling certain 2010-2012 Acura TSX, Honda Accord, Accord Crosstour, Fit and Pilot, 2010-2011 Honda Civic, Civic NGV, Civic Hybrid and CR-V, and 2010 Acura ZDX and Honda Insight vehicles ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B."
Unless included in Zones A or B above, Honda is recalling certain 2009 Acura TSX, Honda Accord, Civic, Civic NGV, Civic Hybrid, CR-V, Fit, and Pilot vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
These vehicles are equipped with certain air bag inflators assembled as part of the frontal air bag modules, and used as original equipment or replacement equipment (such as after a vehicle crash necessitating replacement of the original air bags), may explode due to propellant degradation occurring after long-term exposure to higher absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Honda will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began February 16, 2018. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are B0K and L0J.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 17V545000
2017-08-31
Honda (American Honda Motor Co.) is recalling certain 2008-2012 Accord, 2010-2012 Accord Crosstour, 2006-2011 Civic, 2007-2011 CR-V, 2009-2012 Fit and Pilot, 2010-2012 Insight, and 2009-2012 Acura TSX vehicles that received replacement passenger frontal air bag inflators. One dealership may have incorrectly installed the replacement air bag inflators.
Consequence: In the event of a crash, an incorrectly installed passenger frontal air bag inflator may deploy the air bag improperly, increasing the risk of injury.
Remedy: Honda will notify owners, and dealers will replace the passenger frontal air bag module assembly, free of charge. The recall began October 30, 2017. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are O07, Y0A, N06, G05, M04, Y01, and O09.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 17V030000
2017-01-10 · EA15001
Honda (American Honda Motor Co.) is recalling certain 2009-2012 Acura TSX, 2011-2012 Acura TSX Wagon, 2010-2012 Acura ZDX, 2008-2012 Honda Accord, 2010-2012 Honda Accord Crosstour and Honda Insight, 2009-2012 Honda Fit, 2009-2012 Pilot, 2007-2011 Honda CR-V, 2012 Honda FCX Clarity and 2006-2011 Honda Civic, Civic Hybrid, Civic NGV vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A."
Additionally, if not included in "Zone A" above, Honda is recalling certain 2009 Acura TSX, Honda Fit and Pilot, 2008-2009 Honda Accord, 2006-2009 Civic, Civic Hybrid and Civic NGV, and 2007-2009 Honda CR-V vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B."
Additionally, if not included in "Zone B" above, Honda is recalling certain 2008 Honda Accord, 2006-2008 Honda Civic, Civic Hybrid and Civic NGV and 2007-2008 Honda CR-V vehicles originally sold, or ever registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming.
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
Remedy: Honda will notify owners, and dealers will replace the front passenger side air bag inflator, free of charge. The manufacturer has mailed an interim notification, and will send a second notification when parts are available. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KE1 and KE2.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 16V346000
2016-05-24 · EA15001
Honda (American Honda Motor Co.) is recalling certain model year 2009-2011 Acura TSX, 2011 TSX Wagon, 2010-2011 Acura ZDX, 2008-2011 Honda Accord, 2010-2011 Accord Crosstour, 2006-2011 Civic, Civic Hybrid, and Civic GX, 2007-2011 CR-V, 2010-2011 FCX Clarity and Insight, and 2009-2011 Fit, and Pilot vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A."
Additionally, unless already included in "Zone A" above, Honda is recalling certain model year 2008 Honda Accord, 2006-2008 Civic, Civic Hybrid and Civic GX, and 2007-2008 CR-V vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B."
Vehicles not originally sold or ever registered in either Zones A or B are not subject to this safety recall.
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
Remedy: Honda will notify owners, and dealers will replace the inflator, free of charge. The recall began March 2017. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall is KA4, KA5, KA6, and KA7.
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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.