If you are looking at a used Honda or Acura V6 with Variable Cylinder Management, assume oil consumption is possible until the car proves otherwise. Honda itself has documented piston ring wear and sludge on certain 2013-2017 Odyssey and 2013-2015 Pilot engines that let oil foul the spark plugs and cause misfires, so the job is to find out whether this engine has the problem, whether it was fixed, and whether any coverage is left.
That last part is where shoppers get stuck. A history report will not tell you how much oil a V6 burns between changes, and a seller who topped it off yesterday will swear it uses none. So you have to collect the evidence yourself.
What VCM actually does
Variable Cylinder Management is Honda's cylinder deactivation system for V6 engines. According to Honda's own information center, when full power is not needed, VCM can shut off one bank of cylinders by cutting the fuel injectors and stopping valve operation with the VTEC system, then bring all six cylinders back immediately when you ask for torque. It is there for fuel economy, and you will not feel it switch on most cruises.
The trouble owners talk about is oil getting past the piston rings. If you do not know whether the car you are looking at even has a VCM V6, our guide to finding the engine type by VIN and the Honda VIN decoder walkthrough will get you to the engine code before you waste a trip.
What Honda has put in writing
On June 17, 2025, American Honda sent dealers a notice announcing a warranty extension for certain 2013-2015 Pilot and 2013-2017 Odyssey vehicles. The notice says piston ring effectiveness may be reduced by excessive wear and oil sludge build-up, which can make oil stick to the spark plug, carbon-foul it, and set misfire codes P0301 through P0304 with the check engine light on. It extended powertrain coverage for that misfire repair to 10 years from the original purchase date or 150,000 miles, whichever comes first, and it also offered a window through January 31, 2026 where affected vehicles were covered regardless of age or mileage.
That blanket window is over. The 2025 version of service bulletin 25-061 for the Odyssey says repair orders issued after January 31, 2026 are no longer valid. Then on February 1, 2026, Honda published bulletin 26-001 for the 2013-17 Odyssey, which repeats the 10-year or 150,000-mile extension for this misfire condition. I found that Odyssey bulletin on NHTSA's site. I did not find the matching Pilot bulletin text, so on a Pilot, ask the dealer what the VIN shows rather than assuming the same terms.
The repair in the bulletin is not a plug swap. The corrective action calls for diagnosis, a PCM software update, new spark plugs, cleaning the pistons and replacing the piston rings, and if the cylinder inspection fails, an engine block replacement. That gives you a sense of what an uncovered fix could involve.
How the problem shows up on a car you are about to buy
Look for the symptoms Honda describes, and for the things sellers do to hide them:
- A check engine light or recent code clear. Misfire codes P0301-P0304 are the ones named in the bulletin. Have the inspecting shop scan it and tell you if codes look like they were cleared recently.
- Fouled or very new plugs. Ask when the plugs were last replaced and why. Fresh plugs on a car with no other recent work is worth a question.
- Low oil on the dipstick. Check it cold before the drive. If it is low, or overfull like it was just topped off, ask how often they add oil.
- A shake at steady cruise. Honda says VCM drops a cylinder bank when full power is not needed to hold cruising speed, so pay attention to smoothness on a steady highway stretch.
Honestly, none of those proves ring damage. They tell you whether to pay a shop to look closer. A used Odyssey or used Pilot with a full stack of dealer invoices is a very different bet from one that comes with a story.
What a history report can and cannot tell you
CARFAX says its reports check things like service history, open recalls, and transmission replacement, and also says plainly that CARFAX does not have the complete history of every vehicle and that you should use it along with an inspection and test drive. That fits this problem well. A report may show repeated dealer visits, a spark plug service, or an engine-related repair line if the shop reported it. It will not measure oil use.
Remember this is a warranty extension, not a safety recall. NHTSA says its VIN search shows unrepaired safety recalls and will not show manufacturer customer service or other non-safety campaigns. So a clean NHTSA result tells you nothing about this repair. Our TSB vs recall explainer goes through why that gap exists, and checking Honda recalls by VIN covers the safety side.
Questions to ask before you pay
Call a Honda service department with the VIN. Ask three things: has the bulletin repair for the misfire extension been done, is the VIN still showing eligible, and are there any other open campaigns. The bulletins tell dealers to run a VIN status inquiry for eligibility, so this is a normal request. For the original purchase date, which sets the 10-year clock, our post on checking factory warranty status by VIN explains where to look.
If you are cross-shopping a smaller Honda, do not mix this up with fuel getting into the oil on the 1.5-liter turbo. That is a different failure, covered in our 1.5T oil dilution check.
About the report itself
We have seen seller-supplied PDFs that were doctored, so pull your own. We are a licensed CARFAX and AutoCheck reseller, with no affiliation to CARFAX, AutoCheck, or Experian. Buying straight from the source usually runs around $39.99 to $44.99. On our site it has been about $5.50 as a guest, about $4.50 for members, or about $6.75 for a CARFAX plus AutoCheck bundle, but confirm at checkout since prices move. Nobody can sell you a full official report for free.
As of November 2026, a 2017 Odyssey first sold in late 2017 and still under 150,000 miles may have time left on the 10-year extension, while a 2013 bought new in 2013 is past it. Run the VIN through the dealer before you shake hands, because that answer changes the price you should pay.
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